Which is the most accurate description of an ecosystem?

a. an ecosystem consists of a biological community-- the physical and chemical factors--that make up its abiotic environment.

b. an ecosystem consists of the biological community that occurs in some locale.

c. an ecosystem consists of the biological community that occurs in some locale and the chemical factors that make up its biotic or abiotic environment.

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

Which organelle breaks down sugar molecules that supply energy to the cell ?

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.