Answer:
A. test the composite drug in a trial run
Explanation:
From what i know, in sickle cell anemia the blood is lack of oxygen.
The haemoglobin run from the blood cell because reacted with nitric oxide, and so thats why the shape of the blood change into sickle-shaped like.
Process, transmit, and receive nerve impulses (electrical signals) from periphery to central nervous system.
Answer:
A
Explanation:
technology has made it easier for people to get the nutrients they need through food. Better agriculture means that people don't have to hunt for food or out themselves in danger in order to get food. Clean water has lowered the risks of catching diseases that were in the water.
Answer:
A
Explanation:
they are associated with venous sinuses.this valve open one way flow of direction of the heart.
