40 POINTS!! ANSWER CORRECTLY FOR BRANLIEST! Which of these is a characteristic of warm air?
A. It transfers energy through radiation.
B. Its molecules are far apart.
C. It sinks due to convection.
D. It cools the land below it.

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.

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.

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?