How could the building of a dam effect the Earth system? a. a dam could cause the flooding of a nearby forest
b. a dam could destroy a fish species that needs swiftly moving water
c. a dam could block the migration of spawning fish
d. all of the above

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Name one type of data that h-r diagrams do not show.

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )