Trivia Quiz #83 - Earth and Nature Trivia Quiz Questions and Answers

Nature, earth, and environment trivia quiz questions.

1. What is the name given to the geological time period of 363-290
   million years ago during which coal measures were formed?
    
2. Which is further north, the tropic of cancer or the tropic of
   Capricorn?
    
3. What name is given to your angular distance on the Earth's surface
   relative to the equator?
    
4. Which landlocked Asian country is described as the world's 'highest
   rubbish dump' because of all the refuse left behind by expeditions?
    
5. What is the difference between weathering and erosion?
    
6. When and where was the Mount Pinatubo eruption?
    
7. What name is given to the layer of the atmosphere closest to the
   surface of the Earth?
    
8. What name is given to the Earth's single continent, which existed 250
   million years ago?
    
9. What component of CFCs causes destruction of ozone?
    
10. Why is lead in petrol dangerous?
     
11. What does a barometer measure?
     
12. What is the basic chemical composition of malachite?
     
13. What is the term for a fold of the Earth's crust in which the layers
    of rock dip inwards?
     
14. Which clouds only occur above 10,000 meters?
     
15. What is the name of the organization which controls whaling?
     
16. How large is the area seated within the project BioSphere 2?
     
17. What kind of a person might study a podzol?
     
18. Where might you find an aurora?
     
19. Which gas in the atmosphere can be turned into fertilizer by some
    microbes?
     
20. Which layer of the Earth is believed to be formed of molten iron and
    nickel?
     
21. Which is the world's largest nature reserve?
     
22. What is the collective noun for rhinoceri?
     
23. What type of rock is formed by the rapid cooling of molten lava?
     
24. What name is given to the rock formations used as a source of water?
     
25. How long does it take for
    the Earth to spin once on its axis?
     
26. What is a very hard,
    naturally-occurring mineral, of which ruby and sapphire are gem quality
    varieties?
     
27. Which common mineral is
    used to make casts, moulds, blackboard chalk and plaster of Paris?
     
28. Corundum is a mineral
    oxide of which metal?
     

Answers to Quiz #83 - Earth and Nature Trivia Quiz

1. Carboniferous.
2. Tropic of Cancer.
3. Latitude.
4. Nepal.
5. In erosion, particles of rock are transported away by wind or rain.
6. In the Philippines, north of Manila, in 1991.
7. Troposphere.
8. Pangaea.
9. Chlorine.
10. It can affect the development of the nervous system, especially in
    children.
11. Atmospheric pressure.
12. Copper carbonate.
13. Syncline.
14. Cirrus.
15. The International Whaling Commission or IWC.
16. 3.5 acres.
17. A soil scientist.
18. The polar skies.
19. Nitrogen.
20. Outer core.
21. Etosha Reserve in Namibia.
22. Crash.
23. Obsidian.
24. Aquifers.
25. One day.
26. Corundum.
27. Gypsum.
28. Aluminum.

Trivia Quiz #82 - Nature and Environmental Trivia Quiz Questions and Answers

Nature and environment trivia quiz questions.

1. Which Indian state is at the eastern end of the Himalayas?
    
2. What is the name of the atmospheric gas which screens out the sun's
   harmful ultraviolet radiation?
    
3. What is the world's deepest ocean?
    
4. Which is the largest animal ever to have inhabited the Earth?
    
5. What once covered 14% of the Earth's land area, but by 1991 over half
   had been destroyed?
    
6. Which inland sea between Kazakhstan and Uzbekistan is fast
   disappearing because the rivers that feed it have been diverted and
   dammed?
    
7. The damaged Chernobyl nuclear power station is situated in which
   country?
    
8. What type of rock is granite?
    
9. What type of rock is basalt?
    
10. What is the main constituent of natural gas?
     
11. What is the term for nutrient enrichment of lakes?
     
12. Which of the Earth's atmospheric layers reflects radio waves?
     
13. Which gas forms 80% of Earth's atmosphere?
     
14. In which mountain chain would you find Mount Everest?
     
15. What is the collective term for substances such as coal, oil and
    natural gas, the burning of which produces carbon dioxide?
     
16. What contributes to the greenhouse effect at lower atmospheric
    levels, but in the upper atmosphere protects life on Earth?
     
17. What is the name of the process by which substances are washed out of
    the soil?
     
18. Who was director of the environmental pressure group Friends of the
    Earth 1984 - 90?
     
19. Which European country is committed to decommissioning all of its
    nuclear reactors?
     
20. Which Canadian city gave its name to the 1987world agreement on
    protection of the ozone layer?
     
21. Five-legged creatures have damaged which 1250 mile long wonder of the
    world?
     
22. The dodo was a native bird of which island?
     
23. What is the name given to the study of earthquakes?
     
24. How do igneous rocks form?
     
25. How many carats is pure gold?
     
26. Marble is formed by the metamorphosis of which rock?
     
27. Which common water pollutant is believed to be harmful to newborn
    babies?
     
28. Which radioactive substance sometimes occurs naturally in spring
    water?
     
29. What natural feature covers approximately 6% of the Earth's land
    surface, and harbors 40% of the Earth's species?
     
30. What name is given to the huge growths of algae sometimes seen in
    polluted lakes and rivers?
     
31. What was the name of the dioxin-containing defoliant used during the
    
    Vietnam war by the USA army?
     
32. In which area of the world do tropical rainforests occur?
     
33. CITES is an international agreement on which environmental problem?
     
34. What is the approximate circumference of the earth?
     
35. What prevents the earth's atmosphere from floating out into space?
     
36. What element give amethyst its violet color?
     
37. Which of the emissions from cars are acidic?
     
38. Which quarry in the Italian region of Tuscany is renowned for the
    quality of its marble?
     

Answers to Quiz #82- Nature and Environment Trivia Answers

1. Assam.
2. Ozone.
3. Pacific.
4. Blue Whale.
5. Rainforest.
6. Aral Sea.
7. Ukraine.
8. Igneous.
9. Igneous.
10. Methane.
11. Eutrophication.
12. Ionosphere.
13. Nitrogen.
14. Himalayas.
15. Fossil fuel.
16. Ozone.
17. Leaching.
18. Jonathon Porritt.
19. Sweden.
20. Montreal.
21. Great Barrier Reef.
22. Mauritius.
23. Seismology.
24. From cooling volcanic lava.
25. 24.
26. Limestone.
27. Nitrate.
28. Radon.
29. Tropical rainforest.
30. A bloom.
31. Agent Orange.
32. On or near the equator.
33. The trade in endangered species.
34. 24,900 miles.
35. Gravity.
36. Manganese.
37. Nitrogen oxides.
38. Carrara.

Trivia Quiz #81 - Nature, Earth, and Environmental Trivia Quiz

Earth, nature, and environment trivia quiz questions.

1. Which gas released by car exhausts, stops the blood hemoglobin from
   working correctly?
    
2. What name is given to the hard white material of elephant tusks?
    
3. What device is added to a car's exhaust system to reduce pollution?
    
4. Which Australian mammal lays eggs?
    
5. What is the term for something that will break down naturally?
    
6. Which is the most common gas in the atmosphere?
    
7. Which fuel is formed by the fossilization of plants?
    
8. Oxygen forms approximately what proportion of the atmosphere?
    
9. What kind of tide appears at full Moon?
    
10. What is the term given to the study of the weather?
     
11. What is the second most common gas in the atmosphere?
     
12. What is the name given to the outermost layer of the Earth?
     
13. Which country produces the world's largest quantity of municipal
    waste per person per year?
     
14. Which is the largest national park in Europe?
     
15. Which sea is so highly polluted that the Barcelona Convention was set
    up in 976 to try and clean it up?
     
16. What was the viral disease controversially introduced into Britain
    during the 1950s to reduce the rabbit population?
     
17. What is the collective noun for larks?
     
18. What is the scientific scale for measuring the hardness of rocks?
     
19. What is the world's smallest continent?
     
20. Which gas forms approximately 1% of the atmosphere?
     
21. What is the term for the energy obtained from hot, underground rocks?
     
22. What name is given to the rocks swallowed by dinosaurs to assist
    their digestion?
     
23. Which animal has been hunted almost to extinction because of its
    horn?
     
24. Which chemical, commonly used to increase crop yield, sometimes
    contaminates drinking water?
     
25. Where is the Glacier Bay national park?
     
26. When you recycle a drink can, which metal is it you are recovering?
     
27. What is the earth's core made of?
     
28. What is the name of the liquid rock which pours from a volcano?
     
29. What is the term applied to the process of gathering together weather
    forecasts from various recording stations?
     
30. What kind of natural phenomenon 'meanders'?
     
31. What is a cloud?
     
32. What is the collective name for rain hail, snow, and sleet?
     
33. What is the hardest natural substance known?
     
34. What was the name of the ship that spilt 85,000 tons of oil off the
    Shetland Islands in 1993?
     
35. What is the collective noun for crows?
     
36. What are the three main greenhouse gases?
     
37. 25% of which traditional British feature was cut down between 1945
    and 1985 because of agricultural mechanization?
     
38. What is the maximum speed of a garden snail: 0.03 mph, 0.3 mph, or 3
    mph?
     
39. Someone who studies tectonics is probably an expert in which field?
     
40. What common mineral is formed by the fossilization of vegetation?
     
41. Which theory compares the Earth to a living organism?
     
42. In which part of the atmosphere is the ozone layer?
     
43. Where are you likely to come across a laccolith?
     

Answers to Quiz #81 - Nature and Earth Trivia Answers

1. Carbon Monoxide.
2. Ivory.
3. Catalytic converter.
4. Duck-billed platypus.
5. Biodegradable.
6. Nitrogen.
7. Coal.
8. 20%.
9. Spring tide.
10. Meteorology.
11. Oxygen.
12. Crust.
13. USA.
14. Hobe Tauern in Austria.
15. Mediterranean Sea.
16. Myxomatosis.
17. Exhalation.
18. Mohs' scale.
19. Australia.
20. Argon.
21. Geothermal.
22. Gastroliths.
23. Rhinoceros.
24. Nitrate.
25. S E Alaska.
26. Aluminum.
27. Molten iron and nickel.
28. Lava.
29. Synoptic forecasting.
30. A river.
31. Water vapor condensed into droplets.
32. Precipitation.
33. Diamond.
34. Braer.
35. Murder.
36. Carbon dioxide; methane; chlorofluorocarbons.
37. Hedges / hedgrerows.
38. 0.03 mph.
39. Movement of continental plates.
40. Coal.
41. Gala hypothesis.
42. Stratosphere.
43. In igneous rock.

Trivia Quiz #80 - Science Trivia Quiz Questions and Answers About the Human Body

Human body science trivia quiz questions

1. Which parts of the body are formed by the bones of the metatarsals
   and phalanges?
    
2. What is the fluid that lubricates and cushions the movable joints
   between the bones?
    
3. What is the oxygen-carrying protein found in the red blood cells of
   the body?
    
4. What are the chemicals produced by the endocrine glands to control
   body functions?
    
5. Where in the human body do you find the alveoli?
    
6. What name is given to the genetic make-up of an individual?
    
7. A bone is joined to a muscle by which structure?
    
8. What is the biggest bone in the body?
    
9. Which of the retina's cells can distinguish between different
   wavelengths of light?
    
10. What is the name of the large buttock and thigh muscle?
     
11. Which hormone causes male sexual development?
     
12. Which part of the brain controls the heart rate?
     
13. How many genes are there in the human genome?
     
14. When the egg is released from the ovary, what is left behind?
     
15. What is an overgrowth of fibrous tissue, usually produced at the site
    of a scar?
     
16. Which is the only vein in the body to carry oxygenated blood?
     
17. Which human body organ weighs about 2 kilos?
     
18. What is the threshold of noise-induced pain, measured in decibels?
     
19. Which name is given to the heart chamber which receives blood?
     
20. Which organ makes bile?
     
21. What kind of joint is the hip?
     
22. What term is given to the lymphocytes which mature in the thymus?
     
23. Where is the sinoatrial node?
     
24. What is the substance that the body over-produces in an allergic
    reaction to pollen?
     
25. Where is the pituitary gland?
     
26. Which organ of the body secretes insulin?
     
27. Where are the semicircular canals?
     
28. Which part of the gut absorbs water from thje food?
     
29. Where would you find the islets of Langerhans?
     
30. What is the colored muscle that responds involuntarily to light?
     
31. What is the name of the enzyme produced in the mouth?
     
32. Which glands secrete estrogen?
     
33. The pituitary controls many hormones, but what controls the
    pituitary?
     
34. What is the pigment that colors skin?
     
35. Which tissue secretes progesterone during the second half of the
    menstrual cycle?
     
36. Which gland secretes the corticosteroids?
     
37. What are the natural pain-killing substances produced in the brain
    and pituitary gland?
     
38. In which organ are the feces formed?
     
39. What is the function of the islets of Langerhans?
     
40. What is the scientific name for the heart's pacemaker?
     
41. Which hormone helps control ovulation?
     
42. What hormone was discovered by John Jacob Abel?
     
43. What is the substance produced by hard exercise and oxygen debt,
    causing stiffness in the muscles?
     
44. Where would you find the carotid arteries?
     
45. Of what do we have 52 in a lifetime, 20 of which are deciduous?
     
46. Which protein forms hair and nails?
     

Answers to Quiz #80 - Human Body Trivia Answers

1. Feet.
2. Synovial fluid.
3. Hemoglobin.
4. Hormones.
5. Lung.
6. Genotype.
7. Tendon.
8. Femur.
9. Cone cells.
10. Gluteus maximus.
11. Testosterone.
12. Medulla oblongata.
13. 80,000.
14. Corpus luteum.
15. Keloid.
16. Pulmonary vein.
17. Liver.
18. 140db.
19. Atrium.
20. Liver.
21. Ball-and-socket.
22. T cells.
23. Heart.
24. Histamine.
25. In the brain.
26. Pancreas.
27. The inner ear.
28. Colon.
29. Pancreas.
30. Iris.
31. Salivary amylase.
32. Ovaries.
33. Hypothalamus.
34. Melanin.
35. Corpus luteum.
36. Adrenal.
37. Endorphins.
38. Colon.
39. They secrete insulin.
40. Sinoatrial node.
41. Luteinizing hormone.
42. Adrenaline.
43. Lactic acid.
44. Neck.
45. Teeth.
46. Keratin.

Trivia Quiz #79 - Science Trivia Quiz Questions and Answers About the Human Body

Human body trivia quiz questions

1. Which part of the brain regulates physiological stability in the
   body?
    
2. Which organ is responsible for regulating the blood sugar level?
    
3. Which organ makes urine?
    
4. What is the scapula?
    
5. What is the scientific name for the human ''tail'?
    
6. Where are the ossicles?
    
7. When might a person show rapid eye movement (REM)?
    
8. Which organ removes excess water from the blood?
    
9. Which is the most acidic part of the digestive system?
    
10. A deficiency of which vitamin can cause scurvy?
     
11. What is the average human body temperature when taken by a
    thermometer under the tongue.
     
12. What are the two main veins in the neck, returning blood from the
    brain to the heart?
     
13. What is the term fro a series of uncontrollable  intakes of air
    caused by sudden spasms of the diaphragm?
     
14. Which part of the eye contains about 137 million light-sensitive
    cells in one square inch?
     
15. What is the more common name for the tympanic membrane?
     
16. What is the name for a red blood cell?
     
17. What is the scientific name for the windpipe?
     
18. Where do the Graafian follicles develop?
     
19. Which part of the body produces the excretory product urea?
     
20. Where would you find the pisiform bone?
     
21. What is the scientific name for the kneecap?
     
22. What is protected by the cranium?
     
23. What is the name of the large muscle just beneath the lungs?
     
24. Where in the body is the thyroid?
     
25. Which glands secrete adrenaline?
     
26. Which organ in the body stores excess sugar as glycogen?
     
27. What name is given to the small bones which form the spinal column?
     
28. Which teeth are the third molars, and are always the last to0 erupt?
     
29. What is secreted by the pancreas to regulate blood sugar levels?
     
30. Where in the body are the cerebellum, the medulla and the
    hypothalamus?
     
31. What makes up 60-70% of human body weight?
     
32. What beats more than 2,000 million times during an average lifetime -
    or about 72 beats per minute?
     
33. What are the very narrow blood vessels which form a network between
    arteries and veins?
     
34. What is the name of the membrane enclosing the fluid around the
    fetus?
     
35. What is the ring of bones at the hip called?
     
36. What is the colorless liquid, consisting of plasma and white cells,
    which bathes the body tissues?
     
37. What tube connects the kidney to the bladder?
     
38. What is the name of the structural tissue found in the ear, the nose,
    and in between the vertebral discs?
     
39. Which artery supplies the kidney with blood?
     
40. Which organ destroys old red blood cells?
     
41. Which three bones are collectively known as the auditory ossicles?
     
42. How many chambers has the heart?
     
43. How many ventricles are there in the human heart?
     
44. What is the scientific name for the tube connecting the mouth with
    the stomach?
     

Answers to Quiz #79 - Human Body Trivia Answers

1. Hypothalamus.
2. Pancreas.
3. Kidney.
4. Shoulder blade.
5. Coccyx.
6. In the ear.
7. During sleep.
8. Kidney.
9. Stomach.
10. Vitamin C.
11. 98.4 degrees F.
12. Jugular veins.
13. Hiccups.
14. Retina.
15. Ear drum.
16. Erythrocyte.
17. Trachea.
18. Ovaries.
19. Liver.
20. Wrist.
21. Patella.
22. Brain.
23. Diaphragm.
24. The neck.
25. Adrenal glands.
26. Liver.
27. Vertebrae.
28. Wisdom teeth.
29. Insulin.
30. Brain.
31. Water.
32. Heart.
33. Capillaries.
34. Amnion; amniotic membrane.
35. Pelvic girdle.
36. Lymph.
37. Ureter.
38. Cartilage.
39. Renal artery.
40. Spleen.
41. Hammer; anvil; stirrup.
42. Four.
43. Two.
44. Oesophagus.

Trivia Quiz #78 - Science Trivia Quiz Questions and Answers

Science  trivia quiz - questions about plants, animals, insects, fungus and more.

1. Which family of insects has species named 'drivers', 'weavers', 'and
   even individuals called 'soldiers'?
    
2. Which South American vulture can have a wing span of up to 3 meters
   and a body weight of up to 13 kilos?
    
3. What name is given to the study of animal behavior?
    
4. Which part of a beetle's body is a skeleton?
    
5. Mosses are classified as belonging to which part of the plant
   kingdom?
    
6. What is the name of the structures which allow leaves to breathe?
    
7. In what state is a 'sessile' animal likely to be?
    
8. Which rodent rears its young, called kittens, in a nest called a drey?
    
9. Which sub-division of plants is named after their practice of forming
   'naked seeds'?
    
10. The maidenhair tree is the sole survivor of which class of plant?
     
11. What is the state of inactivity through the dry, summer season, as
    hibernation is the dormancy of the winter months?
     
12. Which insects' larvae secrete blobs of froth called 'cuckoo spit'?
     
13. What kind of a creature is a scorpion?
     
14. Which part of the common valerian is used to make a sedative?
     
15. What is the name of the structures which allow stems to breathe?
     
16. What has a central vein called a midrib?
     
17. Which mammal constructs a lodge in which to store food, rear young,
    and pass the winter?
     
18. Which acid is contained in rhubarb leaves, making them poisonous to
    eat?
     
19. What is a tragopan?
     
20. What kind of an organism causes a 'rust' attack on plants?
     
21. Which is the dominant generation in the ferns?
     
22. Which is the biggest flower in the world?
     
23. What is the name of the lustrous substance that forms pearl and
    mother-of-pearl?
     
24. Which beautiful youth from mythology has a plant named after him?
     
25. What is the name of the so-called 'first-bird'?
     
26. What do amoebas do by binary fission?
     
27. What is the Latin word for 'liquid' which we use to mean the fluid
    produced by the tree Ficus elastica?
     
28. What is the generic word for plants that grow in water or
    water-logged conditions?
     
29. What is the main use of the tree Citrus bergamia?
     
30. In animal classification, how are the phyla subdivided?
     
31. Which physician developed a type of remedy involving wild flowers?
     
32. What kind of specialist would study storm petrels?
     
33. The best longbows were constructed from which wood?
     
34. How many species of domestic dog are found today?
     
35. What kind of creature is a barnacle?
     
36. Machiavelli used which plant's name as the title of one of his books?
     
37. What is the name of the evolutionary theory suggesting that evolution
    has an uneven pace?
     
38. Which step in photosynthesis is responsible for splitting water
    molecules?
     
39. Which kind of organisms are likely to show a 'taxis'?
     

Answers to Quiz #78 - Science Trivia Answers

1. Ant.
2. Condor.
3. Ethology.
4. The outside.
5. Bryophyta.
6. Stomata.
7. Stationary.
8. Squirrel.
9. Gymnosperms.
10. Ginko.
11. Aestivation.
12. Froghopper / spittlebug.
13. Arachnid.
14. Root.
15. Lenticels.
16. Leaf.
17. Beaver.
18. Oxalic acid.
19. A Himalayan pheasant.
20. Fungus.
21. Sporophyte.
22. Fafflesia arnoldiana or stinking corpse lily.
23. Nacre.
24. Narcissus.
25. Archaeopteryx.
26. Reproduce.
27. Latex.
28. Hydrophytes.
29. Perfume.
30. Classes.
31. Bach.
32. An ornithologist.
33. Yew.
34. One.
35. A crustacean.
36. Mandrake.
37. Punctuated equilibrium.
38. Light reaction.
39. Protozoa.

Trivia Quiz #77 - Science Trivia Quiz Questions and Answers

Science trivia quiz questions about plants and animals.

1. What is the favorite food of the giant panda?
    
2. What leaves does a silkworm prefer to eat?
    
3. How long is a giraffe's neck, approximately?
    
4. What kind of an animal is a marmoset?
    
5. Which plant has flowers but no proper leaves?
    
6. What name is given to animals that eat both flesh and plant material?
    
7. Which flightless marine birds of the southern hemisphere live in
   rookeries?
    
8. Which species of decapod has varieties called "fiddler', 'spider' and
   'hermit'?
    
9. What is the name of the seasonal journey undertaken by many animals
   to distant feeding band breeding grounds?
    
10. Which digestive organ is well-developed in grass-eating herbivores,
    but is only vestigial in humans?
     
11. Which are the only birds able to fly backwards?
     
12. Photosynthesis is carried out in which part of the cell?
     
13. What is the name of the protective outer layer of trees?
     
14. What liquid do plants need for photosynthesis?
     
15. What is the fastest animal on two legs?
     
16. What is the green pigment used by plants to trap sunlight?
     
17. What are the young of bats called?
     
18. Which plant has flowers but no proper leaves?
     
19. What is the larva of a toad called?
     
20. Which bird, a member of the cuckoo family, is often seen dashing
    along the highways of the southern USA and Mexico... hence its name?
     
21. What grow as parasites and saprotrophs, contain no chlorophyll, and
    reproduce by means of spores?
     
22. Why do fish have gills?
     
23. Which animal can move by jet propulsion?
     
24. Which acid is produced in large quantities by lemon trees?
     
25. What id the name given to the study of birds?
     
26. What name is given to the microscopic plants found in great numbers
    in rivers, lakes, and oceans?
     
27. Of which reptile are there only two species, one living in the
    Mississippi and the other in China?
     
28. What are the nocturnal, herding herbivores of Australia, Tasmania,
    and New Guinea?
     
29. What type of seaweed grows up to 100 meters in length, and is farmed
    for its alginates?
     
30. Where in an animal would you find a mandible?
     
31. Which vertebrates have a skeleton of cartilage rather than bone?
     
32. Which European tree lives the longest?
     
33. What is a beaver's home called?
     
34. Which tissue carries sugary sap around the plant?
     
35. Which cells form the middle layer of plant leaves?
     
36. How long is the gestation period of a duck-billed platypus?
     
37. Which antipodean bird is the largest member of the kingfisher family?
     
38. Which microscopic organisms form the basis of marine and freshwater
    food chains?
     
39. Which bird feeds with its head upside-down and its beak held
    horizontally beneath the water?
     
40. Where in a vertebrate would you find the protein myoglobin?
     
41. What kind of a tongue does the okapi have?
     
42. What do baleen whales eat?
     
43. What is the name of the food storage organ found in many birds?
     
44. What is the most abundant substance in the plant kingdom, which no
    mammal produces the enzyme to digest?
     

Answers to Quiz #77 - Science Trivia Answers

1. Bamboo shoots.
2. Mulberry.
3. 3 meters.
4. An American monkey.
5. Cactus.
6. Omnivores.
7. Penguins.
8. Crab.
9. Migration.
10. Appendix.
11. Hummingbirds.
12. Chloroplast.
13. Bark.
14. Water.
15. An Ostrich.
16. Chlorophyll.
17. Pups.
18. Cactus.
19. Tadpole.
20. Roadrunner.
21. Fungi.
22. To absorb oxygen.
23. Octopus.
24. Citric Acid.
25. Ornithology.
26. Algae.
27. Alligator.
28. Kangaroos.
29. Kelp.
30. Skull.
31. Sharks.
32. Yew.
33. Lodge.
34. Phloem.
35. Mesophyll.
36. It doesn't have one.
37. Kookaburra.
38. Plankton.
39. Flamingo.
40. Muscle tissue.
41. Prehensile.
42. Krill.
43. Crop.
44. Cellulose.