450 mya, is where you would find fossils.
Explanation:
The first layer would be newer organismis that haven't quite decayed yet.The second and third layer is where the bones of the dead organasims lie, they havent quite been through the whole process yet, but they are nearly complete just about 100,000 years left.The fourth layers have been through alot, and have been there for many many years we can say abot 100,000,000 years.They are ready to become a fossil fuel.
Causes death of aquatic organisms due to unavailability of air in water, chemicals block air circulation in water bodies
Answer:
They both control the expression of genes.
Explanation:
Answer:
The correct answer is A) Pons.
Explanation:
The forebrain is the upper part of the brain, where the cortex is located. As the pons is located in the lower part or brainstem it belongs with structures as the medulla. It works as a bridge connecting the brain with the spinal cord and allowing messages to come and go.