<em>Answer is B. The fossils in the lower layers are older than the fossils in the upper layers.</em>
After you wash your hands with soap and water, it should be acceptable.
It would be 100% Heterozygous
D. They make their own food using energy from the sun. Trees use a process called photosynthesis to convert light energy from the sun, carbon dioxide, and water into glucose (the food) and oxygen.
