Primary producers use an energy source (usually sunlight) to build organic molecules.
Vitamins help them function as fats.
Answer:
the correct answer is option ( B )
Answer: nervous system
Explanation:
The nerves send impulses either from the brain or spinal chord for the body organs to coordinate
Fats must be broken down into fatty acids before being converted into glucose. Lipids are known as the back up energy source. They are used to make enzymes, hormones, and antibodies.
