G11-U1-a long & healthy life

White blood cells help defend the body against …

I'm trying to … down on caffeine; I don't want to get addicted to it.

The first ... to be discovered was penicillin.

Exercises need to be done on a ... basis to maintain a good health.

We need ... how an accident like this can be avoided in the future.

Hundreds of thousands of trees died from Dutch elm …

A healthy diet should provide all your essential …

To prevent food poisoning, food must be heated to a high temperature to kill harmful ...

In many cases parasites are incapable of surviving and multiplying in the absence of a host …

A ... diet is essential for healthy growth.