The answer is D, white blood cells.
The main function of white blood cells is to defense the body from bacteria or other pathogens. There's 2 main kinds of white blood cells, lymphocytes and phagocytes. Lymphocytes mainly produce antibodies that can kill bacteria or any pathogens, and phagocytes can ingest the pathogens directly.
Therefore, since the white blood cells can protect our body, they're part of our immune system.
Body needs an approximate 10% fat
Alveoli are found in lungs and exchamge O2 and Co2 !!
so answer is last one !!
<h2>EXPLANATION:</h2>
<h3>Modern monoculture requires vast amounts of rain for irrigating crops as moisture retention is limited in the soil. A lack of topsoil also increases rain runoff. To achieve this vast amount of extra water it means draining from lakes, rivers, and reservoirs, which is exhausting natural resources and aquatic ecosystems.</h3>
It is considered that the child's IQ will be 50% more than parents IQ.
<h3>let's take an example</h3>
If parent's IQ is 100
50% of 100 is 50
Now add these values
100+50=150
So, The child's IQ will be always higher than parents.
