Question

1. endangered species

a. are those that are extinct.
b. are found only in tropical rain forests.
c. can sometimes be brought back from near extinction.
d. are all protected by the endangered species act.

1. global warming is a danger

a. only to people living in warm climates.
b. to organisms all over the planet.
c. only to life at the poles.
d. to the amount of carbon dioxide in the air.

1. overpopulation

a. does not occur among human beings.
b. helps keep pollution levels down.
c. occurs when a species cannot get all the food, water, and other resources it needs.
d. occurs only in large cities.

1. biodiversity

a. is of no concern to scientists.
b. helps to keep ecosystems stable.
c. causes diseases to destroy populations.
d. is found only in temperate forests.

Explanation:

• For question 8: Endangered species are not extinct yet and can sometimes be saved from near - extinction through conservation efforts. Not all endangered species are in tropical rainforests, and not all are protected by the Endangered Species Act (depending on the region).
• For question 9: Global warming affects organisms all over the planet as it changes climate patterns, sea levels, and habitats globally, not just in warm climates, at the poles, or just the amount of carbon dioxide (it is affected by carbon dioxide but is a danger to life).
• For question 10: Overpopulation occurs when a species cannot get all the necessary resources like food, water etc. It can occur in humans and not just in large cities, and it generally increases pollution levels.
• For question 11: Biodiversity is crucial for scientists as it helps keep ecosystems stable. It doesn't cause diseases to destroy populations and is found in many different habitats, not just temperate forests.

Answer:

1. c. can sometimes be brought back from near extinction.
2. b. to organisms all over the planet.
3. c. occurs when a species cannot get all the food, water, and other resources it needs.
4. b. helps to keep ecosystems stable.