Thursday, November 19, 2015




To enable young readers to understand the technical words necessarily used in the text only popular definitions are given.

Abdomen: the part of an insect lying behind the thorax.

Acid: a chemical name given to many sour substances. Vinegar and lemon juice owe their sour taste to the acid in them.

Adult: a person, animal, or plant grown to full size and strength.

Ammonia (ammonium): a compound of nitrogen readily usable as a plant food. It is one of the products of decay.

No comments:

Post a Comment