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How has the human population on Earth changed during the last 50 years?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
Conserving water may help reduce water pollution by ___.
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
Which of the following is a substance that makes chemical reactions take place faster?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
The individuals of one species that occupy a specific area are called ___.
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
Which of the following is an example of hazardous waste?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
Which term means using less material?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
What is the largest source of water quality issues in the United States?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
What ingredient in fertilizers can cause an overgrowth of algae?
enzyme
It increased.
a population
reduce
nitrogen
reducing the need for water treatment
nuclear waste
non-point source pollution
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