37.2 trillion cells in the body
oxygen flow is low and his lungs do not have a lot of capacity
Answer:
Explanation:
Prokaryotic cells are very simple so they have:
circular chromosome
smaller than eukaryotic cells
lack nuclei
have cell walls
Hormones
The endocrine system includes various glands in the body that are responsible for secreting hormones into the bloodstream. Hormones are chemical substances produced by the body that regulate certain functions of cells and organs. Hormones can regulate sleep, sex, growth, stress, huger, metabolism, etc.
