Renewable resources are considered better for the environment

a. they are less expensive to harness

b. once they are harnessed ,they can be replaced

c. they do not cause any pollution.

d. using renewable resources encourage people to plant more trees

explanation:

plz give me the characteristics.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.