During sandblasting, a person uses compressed air, or some other force, to push sand at a high velocity over an object in order to roughen or clear the surface. Wind abrasion is a natural form of sandblasting. In deserts, wind abrasion shapes the rocks and boulders. I would say answer C. Hope this helps!!!!
The immune system has many kinds of white blood cells to fight infections. HIV finds the white blood cells, called CD4 cells. But with cancer the white blood cells are being killed off.
There are countless types of cells in the body, but here are the main ones.
stem cells- cells that develop into specific organs and tissues.
Blood cells-
•red- transport oxygen to cells
•white- immune system
•platelets- help stop bleeding
Fat cells- stores excess energy.
Skin cells- connective tissue to protect inside of body.
Nerve cells- for the nervous system to transmit signals to the body.
Sex cells/gametes- to reproduce.
Male-sperm
Female- ovum
Answer:
So, Mechanical and Chemical Digestion is the way of breaking down foods in the body. The difference between Mechanical and Chemical Digestion is, Mechanical Digestion involves the body's movement to make the food smaller and Chemical Digestion involves enzymes to break the food down.
Explanation:
Since Mechanical Digestion involves moving around to break the food down, you would get up and walk around a little to burn it to make it work and Chemical Digestion is just using the natural enzymes in the body to break food down.
