Answer:
The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory system as well as all the other system bneed nutrients and must get rid of metabolic wastes.
Explanation:
It would have a decrease in the numbers of animals because the food chain would be thrown off
The correct answer is positive feedback.
The answer is GLUCOSE(SUGAR/CARBOHYDRATES)
