Lesson 1
Which of the following live in the soil and help the environment?
a. spiders and their webs
b. worms, bacteria, and fungi
c. turtles and their eggs
d. squirrels and their acorns
b worms, bacteria, and fungi
Which of the following statements is false?
a. people often cause permanent changes to the environment.
b. all plants and animals have survived in their ecosystems.
c. not all changes are bad for the environment.
b. all plants and animals have survived in their ecosystems.
What could happen if people introduce a new animal into an environment?
a. the environment will not be affected
b. the animal uses up resources
c. other animals will create pollution
d. all plants and animals will live longer
b. the animal uses up resources
Which of the following is a reason why pandas are endangered?
a. people have destroyed the forests where they live
b. the water sources in their environment have dried up
c. they are no longer able to migrate in the winter
d. hunters kill them for fur
a. people have destroyed the forests where they live
Which of the following cannot be recycled?
a. plastics
b. metals
c. glass
d. coal
d. coal
What causes more changes to the environment than anything else?
a. people
b. migrating animals
c. floods
d. drought
a. people
Which of the following is NOT a reason tha an organism can become endangered?
A. people have destroyed its environment
B. the organism's climate has changed
C. The organism migrates in the winter.
D. hunters have killed too many of the organism.
C. The organism migrates in the winter.
An example of something that is harmful to the environment is
a. a bird that builds a nest on a roof.
b. a lake filled with fresh water
c. an oil spill in the ocean.
d. a plant that decomposes
c. an oil spill in the ocean
All living things in an ecosystem make up a ______.
community
One way to help the environment is to ______ our use of certain things.
reduce
Food, water, and air are all considered _____.
resources
When there is no rain for a long time, a ______ can occur.
drought
The struggle among living things for survival is ____.
competition
A natural disaster that happens when dry land is covered in water is a ______.
flood
Two animals that fight for the same food source is an example of ______.
competition
To _____ means to use something again.
reuse
A living thing is ______ when there are NO MORE of its kind alive.
extinct
A harmful material that damages the air, water, or land is called ______.
pollution
The Saharan cypress is _______ because there are a few of these trees left.
endangered
The St. Helena Olive Tree became _____ because of disease and dry weather.
extinct
Sunlight and air are _____ that help an organism survive.
resources
All eagles in an ecosystem make up a _____.
population.
A person can ______ an old tire by turning it into a tire swing.
recycle
When only a few of an organism are left it is _____.
endangered
When harmful materials damage the air, water, or land, this is called _______.
pollution