Food chain and
11.
(2 Points)
are examples of Inorganic pollutants :
Detergents
Nitrogen dioxide
potassium
Phosphorus
dead bodies

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water