Chapter 4 Question Preview (ID: 5181)
Changes In Ecosystems.
TEACHERS: click here for quick copy question ID numbers.
One way to help the environment is to _____________ our use of certian products.
a) reduce
b) reuse
c) recycle
d) review
Two animals that fight for the same food source is an example of what?
a) competition
b) endangered
c) extinct
d) flood
The st. Helena Olive tree became __________ because of disease and dry weather.
a) competition
b) endangered
c) extinct
d) flood
When harmful materials damage teh air, water, or land this is called __________.
a) flood
b) fossils
c) pollution
d) population
Sunlight and air are ___________ that help an organism survive.
a) resources
b) competition
c) endangered
d) extinct
The remains of organisms that lived long ago are ______________.
a) flood
b) fossils
c) pollution
d) population
When only a few of an organism are left, it is __________________.
a) competition
b) endangered
c) extinct
d) flood
All the eagles in an ecosystem make up a(n) ______________.
a) population
b) reuse
c) reduce
d) resources
A person can ___________ an old tire by turning it into a tire swing.
a) reduce
b) reuse
c) recycle
d) review
Heavy rains and other storms can cause a(n) _____________________.
a) flood
b) fossils
c) pollution
d) population
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