What do organisms require in order to create and maintain this organization?

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

Which step is not included in the step approach to calculating the greatest common divisor?

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.