In the 1980s laws were passed to reduce the amount of certain chemicals used by companies and individuals. According to these laws, the use of chlorofluorocarbons, or CFC’s, should be reduced and eventually eliminated. These compounds contain chlorine and cause problems when released into the Earth’s atmosphere.
These laws are meant to to reduce which human-induced environmental change?
A. nonnative species introduction
B. non-sustainable harvesting
C. ozone layer depletion
D. eutrophication

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

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.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?