An archaeology student is creating a model of a cliff wall. He is including representations of different types of fossil organisms in the model. Question: Which fossil should be placed in the bottom layer of the model cliff wall for the model to be scientifically accurate?

ok

explanation:

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

a. by using fur or clothes to trap heat energy near the body