NEW
Font size
WorksheetsHuman Impact on Ecosystems Review
Total questions: 40
Worksheet time: 20mins
There are about 7.5 million people in the world today.
True
False
The anticipated human population by the year 2050 is about ______.
6 billion
9 billion
12 trillion
What has been the trend in the world’s human population numbers in the last 200 years?
It has increased at a slow, linear rate.
It has increased at a large, exponential rate.
It has maintained a balance due to slowing birth rates.
A measure of the number of people in a given area is called ______.
average population
population size
population density
Suppose you counted 20 Monarch butterflies in a garden measuring 10 m2. What would be the population density of the Monarch butterflies?
2 butterflies per m2
200 butterflies per m2
20 butterflies per m2
Which of the following is an alternative to disposing of trash in a landfill?
Recycling paper, plastic, glass, and other materials.
Composting leaves, lawn clippings, and old food.
Incinerating while providing a filter to trap harmful emissions.
All of the above are alternatives to disposing of trash in a landfill.
Why do landfills have liners?
To keep toxic chemicals from seeping into groundwater.
To keep sewage from spilling into waterways.
To filter toxic chemicals out of wastes.
Natural resources are evenly distributed around the Earth.
True
False
An example of a renewable natural resource is ______.
water
coal
oil
An example of a nonrenewable natural resource is ______.
trees
wind
coal
Urban growth creates a decrease in the demand for natural resources.
True
False
A substance that makes air, water, or land harmful for life is called ______.
a pollutant
an alternative energy source
an organic fertilizer
Biodiversity is a measure of the ______.
variety of nonliving things within an ecosystem
amount of resources shared by the human population
variety of species within an ecosystem
The greater the biodiversity of an ecosystem, the more easily it may recover.
True
False
Which of the following is NOT a problem we face with the quality of our air and atmosphere?
Acid rain
Dumping oil into storm drains
Smog formation
Which chemical is most responsible for the depletion of the ozone layer in our atmosphere?
Carbon dioxide
DDT
CFC's
Which of the following factors can influence the amount of smog that develops in a given area?
Weather conditions, such as cloud cover, wind speed, and temperature.
Emissions from vehicles, consumer products, and industries.
The amount of people that live in a given area.
All of the above are factors that can influence the amount of smog that develops in a given area.
Chemical runoff from farm fields, oil spills, and erosion are three causes of ______.
air pollution
water pollution
hydropower sources
When cities protect natural habitats and conserve resources, they help to ______.
increase pollution in natural habitats
preserve biodiversity
reduce native species
Removing just one resource from a habitat can have devastating effects on an ecosystem.
True
False
House sparrows from England were released in the U.S. They have competed with native blue birds. These sparrows are examples of ______ species.
native
primary
invasive
Introducing invasive species, such as zebra mussels and kudzu, into an ecosystem can actually increase the amount of biodiversity in that ecosystem.
True
False
The process of saving or protecting a natural resource is called ______.
condensation
conservation
conduction
Which of the following was the United States’ first national park?
Ricketts Glen
Yellowstone
Grand Canyon
Which book was responsible for raising public awareness about how pollution spreads throughout ecosystems?
Silent Spring
Missing Marshes
Fading Forests
Columbia and Montour counties do NOT have any established local environmental programs to date.
True
False
The Clean Air Act, the Endangered Species Act, and the Superfund Program are all examples of ______.
grassroots efforts
federal environmental laws
local environmental laws
The National Environmental Policy Act (NEPA) was enacted to protect ______.
mass transit
urban growth
natural ecosystems
The Superfund Program was enacted to help ______.
clean up hazardous waste sites
clean up sustainable organic farms
promote sound worldwide environmental practices
Which law was enacted to ensure that you stay safe in your working environment?
Clean Water Act (CWA)
Occupational Safety & Health Act (OSHA)
Superfund Program (CERCLA)
Which chemical is most responsible for the rapid decrease in certain animal and insect populations?
Carbon monoxide
DDT
CFC's
The many ways that humans can use natural resources without using them up are called ______.
sustainable practices
environmental laws
clear cutting
Farms that use natural pest controls and fertilizers are called ______ farms.
organic
natural
wind
Farmers who plant seeds without plowing the soil are practicing ______.
clear-cut farming
conservation tillage
raised bed farming
Which of the following is NOT an example of an alternative source of energy?
Solar power
Hydropower
Natural gas power
A species that is in danger of becoming extinct is called ______.
rare
endangered
threatened
A species that is in trouble but is not quite endangered is called ______.
rare
endangered
threatened
Once a species is classified as endangered, it is impossible for it to recover and be taken off the endangered list.
True
False
Which of the following is a way that humans can help prevent the extinction of animal species?
Enforce laws that limit hunting for food or sport.
Preserve forests, lakes, and other natural lands.
Reduce wastes and pollution that enter major water tributaries.
All of the above are ways that humans can help prevent the extinction of animal species.
Which American Indian word means “a mile wide and a foot deep?”
Catawissa
Mocanaqua
Susquehanna
