This free-floating plant has spongy, dusty-green leaves. They are found in tropical and sub-tropical freshwater bodies. what is it called? _a_ _ r _ _ bb _ _ e

Which factors add to the greenhouse effect and are caused by human activities?

The volume of the triangular prom is 54 cubic units

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?