The correct answer is "good record keeping" on apex
Extrusive come in the form of lava, intrusive comes in the form of magma.
Fossils are primarily found in sedimentary rock because these rocks form at low temperature and pressures.
<u>The cell lacks a nucleus.</u> We know this because prokaryotes are single celled organisms that lack a membrane bound nucleus or membrane bound organelles. So, looking under the microscope, you'd notice that the cell has no distinct nucleus, which immediately helps us find the answer we're looking for.
