WorksheetsUnit 4 lesson 5 How Do People Impact Ecosystems?
Total questions: 11
Worksheet time: 6mins
Which can cause a harmful change to an ecosystem?
A. conservation
B. pollution
C. recycling
D. reusing
Which of the following is an example of water conservation?
A. setting aside land to make land refuges
B. turning off lights when leaving the room
C. turning off the tap while brushing teeth
D. watering the lawn once a day
People cut down trees in a forest to build homes. Which is most likely to happen to the animals that live in that forest habitat?
A. They will leave to find a new habitat.
B. They will wait until the habitat grows back.
C. They will find what they need in the habitat.
D. They will learn new ways to live in the habitat.
A group of people camp in the woods. Which activity would be harmful to organisms living in the woods?
A. cutting down a tree to burn in a campfire
B. keeping trash off the land and away from the river
C. leaving the area exactly as they found it
D. using a rowboat in the river
A scientist was studying frogs in a pond ecosystem. The scientist observed a four-wheel vehicle driving through a pond where a frog population lives. How will this vehicle most likely affect the frog population?
A. The frog population will double because of it.
B. The frog population will increase because of it.
C. The frog population will decrease because of it.
D. The frog population will not change because of it.
Which of the following activities can cause pollution?
A. mining fossil fuels
B. conserving water
C. picking up trash
D. planting trees
Which picture shows an example of conservation?
A
B
C
D
Jean is concerned about pollution in her town. What is one way to help reduce pollution in Jean’s town?
A. adding more recycling bins
B. adding more trash cans
C. building more factories
D. removing nonnative plants
People’s actions can change an ecosystem. Which of the following changes is helpful to an ecosystem?
A. letting large herds of animals graze on farmland
B. introducing nonnative plants into an area
C. setting aside land areas as animal refuges
D. clearing forests to make lumber
These animals are covered with oil that entered their habitats. Which event most likely caused harmed to this ecosystem?
A. Natural ground oil seeped up into the water.
B. Oil spilled on land and flowed into the water.
C. Oil spilled from off-shore drilling or a leaked from a ship.
D. Animals wandered into an oil well and brought oil back to their habitats.
Which of the following human activities helps prevent pollution?
A. building homes
B. using less water
C. mining mountaintops
D. using fewer chemical fertilizers
