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Environmental Sciences Quiz 293 (20 MCQs)

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1. A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is .....
2. What process adds oxygen gas the atmosphere?
3. Sheep, buffalo, cow and goat gives us
4. You've learned in school that all reptiles lay eggs. You see an animal you've never seen before and it lays eggs, so you assume it must be a reptile. This is an example of .....
5. Oil spills and trash dumping are examples of ..... pollution
6. Potentially the most dangerous to humans and most destructive to the environment, Forms when layers of hardened lava chunks alternate with lava, Mount St. Helens and Mount Rainier are examples.
7. A group of the same species living in an ecosystem is referred to as a .....
8. What is the term for the total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide (CO2)?
9. A community of animals and plants interacting with their environment. Biotic and abiotic
10. An increase in the amount of nutrients, such as nitrates, in a marine or aquatic ecosystem is
11. In the town of Podunk, Alabama, the population at the beginning of the year was 4882. If 48 people were born and 12 people died, what is the growth rate of the town? Births-Deaths = then / Pop = then X by 100
12. When resources are not available a population will ..... in size.
13. Out of all the animals listed below, which one is considered a secondary consumer?
14. If you are testing the buoyancy (galleggiabilità) of a cotton ball and you leave one plain, cover one half in oil, and cover the third in oil completely then place each in water, what is the independent variable?
15. What happens when something is unsustainable?
16. Which layer of the atmosphere is most dense?
17. This law restricts the pollution of the atmosphere
18. Which type of selection would occur after a natural disaster such as a flood or an earthquake?
19. When layers of the Earth formed, the least dense layer .....
20. Is an undesired change in air, water, or soil that adversely affects the health, survival, or activities of humans or other organisms.
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