What characteristic sets streams and rivers apart?
a) water quality
b) direction of flow
c) size
d) biodiversity

How long does it take neptune to orbit the sun?

What is a problem natives in both bolivia and peru face? a. extreme poverty c. discrimination b. limited access to resources d. all of the above

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays