Environmental Sciences Quiz 499 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. A ..... feedback loop makes a system more stable.

Correct Answer: C) Negative.

2. One way in which wetlands control flooding is by

Correct Answer: B) Absorbing water from rivers.

3. How does primary and secondary succession compare?

Correct Answer: D) Primary succession occurs on bare rock, while secondary succession occurs on soil that has been disturbed.

4. Fresh water found above ground in lakes, ponds, rivers, and streams

Correct Answer: D) Surface water.

5. Heterotrophs that obtain nutrients by breaking down dead and decaying plants and animals are called

Correct Answer: A) Decomposers.

6. What happens to the carbon bonds in coal as it ages?

Correct Answer: C) The bonds get tighter with compression.

7. The acronym "CFC" stands for

Correct Answer: C) Chloro-fluoro-carbons.

8. The harvesting of peat as an energy source is dangerous for the workers, why?

Correct Answer: D) Serious infections caused by bioaerosols; airborne particles containing fungi, viruses, and bacteria.

9. What are nonrenewable resources?

Correct Answer: D) Fossil fuels, nuclear energy, minerals like copper and gold.

10. The energy within a nucleus of an atom

Correct Answer: A) Nuclear Energy.

11. Which organism is in a trophic level that would get most of its energy directly from the sun?

Correct Answer: A) Plant.

12. If I am testing which dog food is the tastiest, what would be my dependent variable?

Correct Answer: A) Amount of dog food eaten.

13. Preserving biodiversity is important because

Correct Answer: C) It increases the rate of survival of species in the area.

14. Which of the following is not an example of an ecosystem service?

Correct Answer: D) Biomass.

15. Two historical events during which smog killed many citizen and made thousands sick .....

Correct Answer: A) Donora Fluoride Fog and London Smog.

16. Earth's current atmosphere is

Correct Answer: A) 78% nitrogen, 21% oxygen, 0.9% argon and 0.037% carbon dioxide.

17. All of the energy plants make in a certain ecosystem

Correct Answer: B) Gross Primary Productivity.

18. The ionosphere is found in this layer

Correct Answer: B) Thermosphere.

19. Which level has the least amount of biomass?

Correct Answer: A) Top.

20. Which is the possible path of movement of nitrogen in the nitrogen cycle?

Correct Answer: D) Air-soil-plants-animals-soil-air.