Why are producers found at the base of an energy pyramid? Producers contain the smallest amount of energy on the energy pyramid because they are consumed by other organisms.
Producers collectively contain the greatest amount of energy in the ecosystem, and are the source of chemical energy for all other levels.
Producers contain the greatest amount of energy on the energy pyramid because they are more likely to consume other organisms transferring energy to the producer.
Producers contain the smallest amount of energy on the energy pyramid because they require the most resources to produce energy.

Tropical rain forests support more species per unit area than any other terrestrial ecosystem. what is one way rain forests are important to the health of the biosphere?

We can be sure that a mole of table sugar and a mole of vitamin c are equal in their 1) mass in daltons. 2) mass in grams. 3) number of molecules. 4) number of atoms. 5) volume.

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.