Question

1. how do scientists determine if species are related enough to produce viable offspring?

a. by comparing their physical appearances only
b. by examining their dna and chromosomal compatibility
c. by observing their behavioral patterns
d. by testing their habitat preferences

1. which two of these ecosystems would you expect to have the greatest amount of biodiversity?

a. deserts
b. rainforests
c. arctic tundras
d. wetlands

1. due to its massive population and industrialization, china is now contributing more air pollution to the worlds atmosphere than the united states. (true / false)
2. products made in foreign countries but sold in the united states must treat their workers fairly according to laws that have been passed here. (true / false)
3. municipal tap water has stricter testing regulations than any other water source (bottled, etc) and is considered safe to drink. (true / false)

Explanation:

• For question 7: DNA and chromosomal compatibility are key in determining if species can produce viable offspring. Physical appearance (A) is too superficial, behavioral patterns (C) and habitat preferences (D) don't directly relate to reproductive compatibility.
• For question 8: Rainforests have a vast number of different plant and animal species due to their stable climate and abundant resources. Deserts (a) have harsh conditions limiting species, arctic tundras (c) have cold - extreme environments, and wetlands (d) have less biodiversity compared to rainforests.
• For question 9: While China has a large population and is industrializing, the statement is false. The US has a long history of high - per - capita pollution and still has significant industrial pollution. Also, China has been making efforts in pollution control.
• For question 10: US laws regarding worker treatment in foreign - made products sold in the US are limited. There is no comprehensive law that enforces fair treatment of workers in foreign countries for all products sold in the US. So the statement is false.
• For question 11: Municipal tap water is regulated by the EPA (in the US context, for example) and has strict testing regulations. Bottled water is often less regulated in some aspects. So the statement is True.

Answer:

1. B. By examining their DNA and chromosomal compatibility
2. b. Rainforests
3. False
4. False
5. True