Why do birds build nests in trees?
Which animal builds a dam to make a pond?
Plant roots can never break rocks.
Circle one: True False
How many examples of organisms changing their home did you learn: beaver, bird, and root?
Answer: ______________
What happens to a river after a beaver builds a dam?
A plant's roots grow into a crack in a sidewalk. Why does this happen?
A desert fox digs a deep burrow in the sand. What need is it most likely meeting?
Ben says a beaver builds a dam just because it likes building. What is missing from his explanation?