To need or depend on someone or something in order to live.
What is 'rely on'
200
Something that is not likely to change.
What is 'stable'
200
To continue to live.
What is 'survive'
200
If something stays the same it ___________ (give two)
What is 'remained stable' 'steady'
200
for sure.
What is 'definitely'
200
To become less.
What is 'declining' or 'decline'
300
The environment in which a group of organisms live.
What is 'ecosystem'
300
A group of plants or animals that are similar to one another and can produce offspring (babies)
What is 'species'
300
To increase by 4 times
What is 'quadruple'
300
an effect something has on something else.
What is 'impact'
300
extremely important or absolutely necessary
What is 'essential'
400
The amount of something.
What is 'quantity'
400
If somethings are very different from other things, it is _________. For example, a classroom that contains people from Africa, Asia, and South America.
What is 'diverse'
400
To increase by three times
What is 'triple'
400
A single person is a(n)__________
What is 'individual'
400
to choose not to do something
What is 'avoid'
500
A guess about somethings number or size.
What is 'estimate'
500
A group of organisms living in a particular area. China has a very large one.
What is 'population'.
500
__________ 1980 to 1980 sales increased by 20%. (which word should be in the blank?