O an increase in insect populations that live mainly in
soil and grasses.
O
the contamination of local watersheds from runoff
of toxins and fertilizers.
O
sediment buildup in areas of sitting water.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.