Producers are typically plants, so I believe the correct answers would be 2, 3, 4.
Answer:huh is it free points
Explanation:
Answer: population density
Explanation:
The nervous system is sending nerve receptors to your brain so that your arm the muscular system will throw the ball the skeletal system allows yourself to hold the ball and works with the muscles to contract and the amp system allows your body to create energy so you can throw the ball
Answer:
the physical distance between the two genes.
Explanation: