Answer:
anaemia
Explanation:
it causes way more than anaemia but it is one of the main problems
The answer is d, abusing drugs and alcohol.
This would exclude Digestion, being a factor in efficiency. All of the others are correct, except for answer D.
Answer:
Memory cell
Explanation:
Memory cells are long-lived immune cell that can recognize a foreign particle that it previously encountered and consequently fight it by providing or building a faster and stronger response for the immune system.
The memory cells don't respond immediately when it recognizes the foreign particle, but, provides a faster response when it encounters the particle subsequently.
The memory cells are long lived immune cells which means they can live in a system for a vey long period.
There are 2 types of memory cells
Memory B cells and memory T cells.
