Volcanoes are commonly found: 1. above hot spots. 2. where land masses on two different plates come together. 3. along subduction zones.
a. 1 only
b. 2 only
c. 3 only
d. 1 and 3

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