<span>The youngest rock layers are at the top and the oldest are at the bottom, which is described by the law of superposition.</span><span>Fossil layers are fossils that formed in sedimentary rock. Sedimentary rock is rock that is formed in layers by the depositing and pressing of sediments on top of each other. </span>
Which one do you want to be answered??
I believe it is genes in the cell cycle because tumors and cancer happen when there is uncontrolled cell division. Not very sure, though.
Answer: As humans have explored the oceans through time, they have been able to view aquatic organisms in their native habitats. They have been able to witness the interactions of aquatic organisms and learn more about the abiotic factors that govern these ecosystems as well.
Explanation:
