Answer:
Lymphocytes and natural killer cells
Explanation:
Carbon,hydrogen, & oxygen
I would say d dude. The joints in our body if not properly stretched before an activity could break or sprained while playing if not used properly. The body is like a machine. If one part of it breaks the rest of its functions performances are affected.
Answer: Chemical level
There are six levels of structural organization of a human body. Of these, the chemical level is the lowest in the hierarchy which includes atoms and molecules that are essential in maintaining life.
Atom is the smallest part of elements such as carbon, hydrogen, oxygen, nitrogen, calcium, potassium and sodium. Molecules are the chemical combination of two or more atoms.
