This quiz works best with JavaScript enabled. Home > Science > Environmental Sciences – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Environmental Sciences Quiz 34 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A colorless, odorless gas which can cause dizziness and headache A) Nitrogen oxides. B) Ground-level ozone. C) Carbon monoxide. D) Sulfur dioxide. Show Answer Correct Answer: C) Carbon monoxide. 2. Most of the world's rain forests are found close to the A) Arctic circle. B) Equator. C) Antarctic. D) Desert. Show Answer Correct Answer: B) Equator. 3. Why is the world's loss of biodiversity a source of concern A) Humans depend upon other organisms for food and oxygen. B) Species extinctions have been rare throughout history. C) Loss of biodiversity is not a concern because extinctions are common. D) Both (a) and (b). Show Answer Correct Answer: A) Humans depend upon other organisms for food and oxygen. 4. Renewable resources have a big ecological footprint A) True. B) False. Show Answer Correct Answer: B) False. 5. Approximately what percent of Earth's water is salt water? A) 3. B) 70. C) 79. D) 97. Show Answer Correct Answer: D) 97. 6. What is the primary source of energy in most ecosystems? A) The primary source of energy in most ecosystems is volcanic activity. B) The primary source of energy in most ecosystems is wind. C) The primary source of energy in most ecosystems is nuclear power. D) The primary source of energy in most ecosystems is the sun. Show Answer Correct Answer: D) The primary source of energy in most ecosystems is the sun. 7. These organisms can also be called heterotrophs because they must eat other organisms to get food. A) Producers. B) Consumers. C) Autotrophs. D) Decomposers. Show Answer Correct Answer: B) Consumers. 8. Which of the following does NOT release carbon dioxide into the atmosphere? A) Volcanic activity. B) Respiration. C) Photosynthesis. D) Fossil fuel combustion. Show Answer Correct Answer: C) Photosynthesis. 9. Potato is ..... of the plant. A) Fruit. B) Stem. C) Leaf. D) Root. Show Answer Correct Answer: B) Stem. 10. The prefix "Geo" means ..... A) Earth, ground and soil. B) Water. C) Life. D) Air. Show Answer Correct Answer: A) Earth, ground and soil. 11. What is gathered to prove or disprove a claim A) Hypothesis. B) Evidence. C) Question. D) None of above. Show Answer Correct Answer: B) Evidence. 12. Which of the following animals are carnivores? I Tiger II Eagle III Rabbit IV Chicken A) I and II. B) I and IV. C) II and III. D) III and IV. Show Answer Correct Answer: A) I and II. 13. What is a herbivore? A) An organism that only eats plants. B) An organism that only eats other animals. C) An organism that eats plants and animals. D) None of above. Show Answer Correct Answer: A) An organism that only eats plants. 14. This sphere includes the continents, the ocean floor, all the rocks on the surface, and all of the sand in the deserts. A) Hydrosphere. B) Atmosphere. C) Biosphere. D) Geosphere. Show Answer Correct Answer: D) Geosphere. 15. What layer is above the troposphere? A) Mesosphere. B) Stratosphere. C) Thermosphere. D) Exosphere. Show Answer Correct Answer: B) Stratosphere. 16. The rejection of Mr. Wegener's hypothesis teaches us that A) Indirect evidence is not sufficient to prove a hypothesis. B) Direct evidence is hard to find. C) Hypotheses are hard to prove. D) Scientists of the early 1900s were not smart enough. Show Answer Correct Answer: A) Indirect evidence is not sufficient to prove a hypothesis. 17. True or False:There is always an obvious ethical solution to any scientific problem. A) True. B) False. Show Answer Correct Answer: B) False. 18. Which of the following are most likely to be the prioneer organisms on an area of bare rock? A) Trees. B) Lichens. Show Answer Correct Answer: B) Lichens. 19. The emergent layer of the rainforest is found ..... A) At the very bottom. B) At the very top. C) In the middle. D) It does not exist. Show Answer Correct Answer: B) At the very top. 20. Plantation forest are not good for the environment A) True. B) False. Show Answer Correct Answer: B) False. ← PreviousNext →Related QuizzesEnvironmental Sciences Quiz 1Environmental Sciences Quiz 2Environmental Sciences Quiz 3Environmental Sciences Quiz 4Environmental Sciences Quiz 5Environmental Sciences Quiz 6Environmental Sciences Quiz 7Environmental Sciences Quiz 8Environmental Sciences Quiz 9Environmental Sciences Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books