Questions

In a computer, the area where the data is stored for the quick access by the computer's processor is called Main storage or Primary storage or Memory or RAM.

Hence, main storage is also called Memory.

During vigorous exercise capillaries of the active muscles will be engorged with blood.

Do the math and you will see that this puzzle is based on the fact taht (2)=1 and 1+1=2

Here If you notice the difference, There is no question mark (?) at the end of the puzzle.

In that case, "What" is the name of the 5th child.

1. Lichens are plants that grow in exposed places such as rocks or tree bark.

2.  Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere.  

3. They need to be very good at absorbing water and nutrients to grow there.

A small organic molecule (sugars or amino acids), several of which may be bonded together to form a chain called a polymer.