What type of pollution did the clean water act succeed in limiting?
a. solid waste
b. sewage
c. acid precipitation
d. carbon dioxide?

Which environment would most likely not contain fossils? a a thick deposit of cracked, dried mud b sediment deposited in a sandy river bed c intrusive rock formed from cooled magma d layers of sand accumulated for a century

Why is the study of demography important to geographers

Fertility and mortality rates are higher in more developed nations.