Answer:
crossing over
Explanation:
Crossing over is where homologs can exchange DNA which leads to genetic variation
Answer:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells.
Explanation:
The cell copies its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.
Answer:
Either (1.) Fossils or (2) Radiometric dating.
Explanation:
Fossils are an obvious answer to this, but radiometric dating is the method most scientists use to find the age of rocks. Radioactive isotopes break down predictably, so the farther along this process is, the older the rock is.
photosynthesis: needs light to happen
Cellular respiration: waste products are carbon dioxide and water.