An illness about bones is called ____

Scurvy can stopped by eating _____

Most living things are made up of millions of ___ cells.

____ millions people in the world do not have clean water.

When we sweat , we lose ____.

We have ___ adult teeth

When you clean the water,you can use _______.

If the child have Rickets illness, their ____ cannot carry the child's weight

To build muscles we should eat ______.

You need ____ to build bones and teeth

Lots of other animals's sight is ______ than human's sight.

Morse code is using different length of sound by ___ and ____.

Eating and drinking to stay alive is called ____.

Tiny cell is filled with a ______.

The time it takes for our heart rate to return to normal after exercises is called ________.

When we exercise our body need more energy and _____.