unit 4 A Deep Troubles

Something that is ..............................is not likely to change.

A(n)........................ is the relationship between all the plants and animals that live together in a particular are

The............... is the number of people or animals that live in a particular place.

If you .....................something, you make it the way it was before.

If you...................... something, you make it less

To.............................. is to continue to live or exist

If something is................................. , it has things that are very different from each other

A(n)................ is a number or an amount

A(n)............... is a group of plants or animals whose members are very similar to each other

When you.................... something’s size or number, you make a guess based on the information available.