In going from one trophic level to the next higher level, A
the number of organisms increases.
B
the amount of usable energy increases.
С
the amount of usable energy decreases.
D
none of these choices are correct.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

eukarya because is is like alche and b is bacteria and d is animals

explanation: