Why are there many separate ecosystems in a rain forest?
a. different conditions support different organisms.
b. there are three levels of consumers in rain forests.
c. rain forests have very few primary consumers.
d. there are three different seasons in a rain forest.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Which is a kingdom? protistachordataprokarya mammalia

Autonomous underwater explorers will be used to gather large-scale ocean information select the best answer from the choices provided ot