6.
The average American has a greater impact on the environment than the average African.
True
False
7.
A green roof provides insulation and reduces:
El Nino
urban inhabitants
rainy weather
the heat island effect
8.
Without the top predators in a food chain:
global warming can happen.
lower species will over-multiply and destroy an ecosystem.
the ecosystem is better off.
humans will not be able to eat.
9.
When deep cool ocean water is brought up to the surface, it contains many:
rocks
nutrients
sharks
sand
