<span>Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.</span>
Answer:
circulatory system
Explanation:
carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.
Answer:
D
Explanation:
The cuticle of a plant helps protect its aerial epidermis from things like environmental stresses and desiccation.
1- Synthesize this hormone
3- a decrease in the amount of glucose in the blood
4- may have fewer side effects then the insulin previously extracted from the pancreas of other animals
5- release of insulin
6- different parts of an individual's DNA are used to direct the synthesis of different proteins...
<span>Nonpolar fatty acid chains</span>
