D, by undergoing a chemical change and reacting with the substrate .
Answer:
In the leaf, excess glucose is rapidly converted to starch, so we test leaves for starch to show that photosynthesis has happened, rather than testing for glucose. We often indicate that light and chlorophyll are required for the process by adding them to the equation near the arrow.
Answer:
1 and 2
Explanation: Random Fertilization means that any one sperm may fertilize any one egg as a chance event.
Random fertilization allows for a lot of diversity in offspring.
Answer:
The thymus
Explanation:
It is the most active and starts making T-cells before you are even born. After puberty the thymus shrinks and is replaced with fat.