The us economy is based heavily on sector jobs.
a. primary
b. secondary
c. tertiary
d. quaternary

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above