If a population of plants contains 10,000 kilocalories of energy, which of the following is the best estimate of how many kilocalories of energy there would be in a population of herbivores that ate nothing but this population of plants?

Plants convert the energy of sunlight into

The weathering of rocks exposed on land (and subsequent transfer of carbon via runoff to the oceans) and the sedimentation and burial of carbonate on the seafloor would both be a part of ____________.

Which of the following levels of organization is arranged in the correct order from largest to smallest?

For most ecosystems _________ is (are) the ultimate source of energy and energy leaves the ecosystem in the form of ______.

Autotrophs are in the __________ trophic level

A fungus breaking down a dead tree is an example of a