Stores energy within the body also in animals it is to store energy
Answer:
More than 7000 chemicals are present in tobacco smoke.
Explanation:
In these 7000 chemicals, 250 are harmful to the human body such as carbonmonoxide, ammonia and hydrogen cyanide etc. There are some chemicals that are found in tobacco smoke which causes cancer disease in human. About 69 chemicals out of 250 are present in tobacco smoke that causes cancer disease. So its consumption is dangerous for health.
Decent from a common ancestor; natural selection.
Answer:
The answer is actually B) Memory T. Memory T cells rapidly produce large numbers of effector T-cells when re-exposed to their antigens, which provides the immune system memory against past infections.
