Which of the following natural processes involve the use and renewal of atmospheric gases?
a.
decaying of organic matter
b.
condensation of water vapor into precipitation
c.
evaporation of surface water by the sun
d.
all of these

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.