Answer:
The skeletal system is vital in supporting the immune system because : Bones contain marrow, a porous material which creates both white and red blood cells. This replenishment of cells allows the body to fight and expel harmful bacteria, environmental toxins, foreign material e.t.c.
The white blood cells formed by the marrow are instrumental in isolating and destroying harmful particles (either on the site or in lymph nodes), or transporting them to the kidneys or bowels for excretion.
NOTE : Some people have marrow disorders which prevent their marrow from forming new cells; this is caused most often by cancer. Today, it is possible to transplant marrow from a healthy individual to a sick patient, and so help their bone marrow form new white and red blood cells to fight their sickness.
I hope it helps :)
Answer:
Yersinia pestis is the causative agent of plague
Explanation:
Rodents, such as rats, carry the disease. It is spread by their fleas.
Answer:
It ensures that the two daughter molecules are exact copies of the parent molecule.
Explanation:
Two identical cell because the main purpose of the cell cycle is to make two identical cell.
Answer:
1.) True
Explanation:
A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory.
A scientific theory is what is made to scientific law after many trials to prove the scientific theory is true. But after they changed a scientific theory to scientific law, it can't be changed back because it has been disproved many years later.
Hope it helps.
