The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. During cellular respiration, your cells use oxygen and glucose to release energy. Carbon dioxide is a waste product of the process. Carbon dioxide must be removed from cells.
Info from: Google lolz.
Answer:
Homeostasis
Explanation:
It is a process that living things use to actively maintain fairly stable conditions necessary for survival.
A river carrying dirt into a lake
The tree would grow taller, and or grow its branches. photosynthesis happens on the leaves.
Oxygen, water, some type of resources to build, and food to eat
