Answer:
Explanation:
This means all living organisms must obtain and use energy to live. Energy is the power to do things. ... A living organism can either make its food or depend on others to make food for them. For example, green plants produce their food from a process called photosynthesis.
Might be gene regulation, the process of turning genes on and off in normal development
Answer:
D) Ciliated simple columnar epithelium
That would be : adenine, thymine, guanine, and cytosine.
An antigen causes the body to make antibodies.
