Answer:
hope this helps
Explanation:
About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.
Different Cells do different things
For examole you have Bloodcells which are specialised to transfer everything the organism needs, you have cells which makes nerves which are specialised to send and recieve impluses
The different components that make up blood. Plasma, white blood cells, red blood cells, platelets.
Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.
Red blood cells are responsible for carrying oxygen and carbon dioxide.
Platelets are responsible for blood clotting.
(White blood cells are part of the immune system and function in immune response.)
When the pituitary gland releases too much GH into the body over a long period of time.
Answer:
d It involves the breakdown of land and rock.
Explanation: