Glaciers, weather, and water shape Earth by:
hibernation
erosion
El Nino
tectonics
The most recent ice age ended about:
100,000 years ago
100 years ago
1 million years ago
10,000 years ago
The decline of the anchovy industry in Peru is blamed on:
economics
global warming
pollution
Almost all the energy used by living things comes from:
Earth
sun
plants
animals
Hibernation enables an animal to save:
range
time
space
energy
The type of environment that is suitable for a certain species is its:
habitat
geographical range
population
community
All members of a species that live in an area make up a(n):
ecosystem
A stable ecosystem includes:
a wide variety of organisms
two types of organisms
one type of organism
at least one type of plant and one kind of animal
Habitat destruction can result in a loss of:
air
species
land
