Bright-field microscopes are used for most microscopic work. true or false.

answer; hypnagogic sensations)

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.

the answer u all are looking for is 4000000000000000000000 million years.