The variables that are kept constant in an experiment are called variables.

Give the symptoms and disease caused by the deficiency of calcium.

Fill in the blank with an appropriate option:

_____(Iron/Calcium/Copper) is needed for healthy bones.

Rewrite the following statement correctly:

Iron makes bones strong.

Why should we eat less amount of fats?

Fill in the blank with the appropriate option:

_____(Iron/Copper/Silver) is found in good amount in green vegetables.

Name the following.

A vitamin required for maintaining good eyesight.

 Rewrite the following statement correctly:

 People indulging in lots of physical labour require lots of proteins.

The mineral that is a component of blood:

Who needs more protein? Why?

Rewrite the following statement correctly:

Water adds roughage to our body.

How do proteins differ from carbohydrates in the role they play in our body?

List the sources and functions of any one mineral in our body.