Human Threat
Habitat Destruction
Habitat Fragmentation
Ecology
Habitats
100
Most water pollution is caused by a. volcanic eruptions b. sediments c. human activities d. droughts
What is c. human activities
100
Which of the following is an unwanted change in the environment caused by harmful substances? a. biodiversity b. overpopulation c. pollution d. evolution
What is c. pollution
100
When humans move into an environment, what is a major impact of their presence? a. habitat destruction b. changes in the climate c. more homes for animals d. more room for plants to grow
What is a. habitat destruction
100
What is the difference between an endangered species and a threatened species? a. A threatened species is becoming endangered specifically because of human activities b. A threatened species was previously labeled endangered but has increased its numbers c. A threatened species is still abundant now but likely to become endangered in the near future.
What is c. A threatened species is still abundant now but likely to become endangered in the near future.
100
The present estimate of the world’s human population is closes to a. 70 million b. 7 million c. 700 million d. 7 billion
What is d. 7 billion
200
If population growth continues, it would degrade which of the following factors determine Earth’s carrying capacity? a. Food production b. Land use c. Water quality d. All of the above
What is d. All of the above
200
Rivers and lakes near large farms are heavily polluted. What is one reason for this? a. excessive use of fertilizers on farms b. decaying animal carcasses c. trash dumping into rivers
What is a. excessive use of fertilizers on farms
200
A species that no longer exists. a. endangered b. habitat c. extinction d. classify
What is c. extinction
200
If a fire burned part of a forest ecosystem, which of these would probably happen? a. All of the animals would die. b. All of the plants and seeds would be destroyed forever. c. A flood would bring new rich soil. d. If a fire burned part of a forest ecosystem, which of these would probably happen?
What is d. If a fire burned part of a forest ecosystem, which of these would probably happen?
200
Why should we preserve wild species? a. All of the choices b. They provide important economic and ecological services c. Wild species allow us to learn how nature works and use that information for genetic research. d. They provide recreational pleasure
What is a. All of the choices
300
Habitat destruction can result in a loss of _______________. a. species b. air c. energy d. land
What is d. land
300
As a local populations grow, what can happen to an aquifer (water supply)? a. More and more water is drawn from the aquifer b. Pollution of the aquifer increases c. Water levels decrease d. All of the above
What is d. All of the above
300
Which of the following is an example of a population? a. eagles that live on a cliff b. river that runs through a canyon c. eagles, snakes, mice, grass and bushes in a canyon d. eagles, snakes, mice, grass, bushes and rocks in a canyon
What is a. eagles that live on a cliff
300
__________is used to describe the wise management of natural resources. a. Conservation b. Biodiversity c. Global warming d. Biological magnification
What is a. Conservation
300
The maximum number of organisms that can be sustained by available resources over a given period of time is known as which of the following? a. Ecological load b. Carrying capacity c. Environmental overload d. None of the above
What is b. Carrying capacity
400
Raw materials supplied by Earth or nature that are necessary or useful to people are a. human resources b. natural resources c. soil layers d. conservation
What is b. natural resources
400
Which is the BEST example of a natural cause of population decline in an ecosystem? a. Air pollution b. Strip mining c. Pesticides d. Disease
What is d. Disease
400
What is the separation of an ecosystem into smaller pieces of land? a. over exploitation b. habitat fragmentation c. pollution
What is b. habitat fragmentation
400
What is the meaning of a limiting factor? a. Any part of the living environment that decides whether or not an organism survives. b. Any part of the living and non-living environment that decides whether or not an organism survives. c. Any part of the non-living environment that decides whether or not an organism survives.
What is b. Any part of the living and non-living environment that decides whether or not an organism survives.
400
The term conservation means using fewer natural resources and reducing waste, it helps a. slow overpopulation and grow food b. prevent habitat destruction and reduce pollution c. prevent biodiversity and destroy species d. stop exotic species and create habitats
What is b. prevent habitat destruction and reduce pollution
500
What human activity has caused the greatest percentage of extinctions? a. pollution b. hunting c. habitat alteration d. pest control
What is c. habitat alteration
500
Human activities are ecosystem services that support and sustain all life and all economies. a. helping b. disrupting c. developing
What is a. helping
500
Pesticides used by humans have killed many of the herbivores in an ecosystem. What will most likely happen? a.The populations of plants will increase, and the populations of carnivores will decrease. b. The populations of carnivores will increase, and the populations of plants will decrease. c.The populations of both plants and carnivores will decrease.
What is a.The populations of plants will increase, and the populations of carnivores will decrease.
500
Which major changes in human society and the environment occurred during the Industrial Revolution? a. People lived in small tribes, many mammals went extinct. b. Domesticated plants were altered, forest was replaces with farmland. c. Fossil fuel consumption, technological efficiency, and environmental pollution all increased.
What is c. Fossil fuel consumption, technological efficiency, and environmental pollution all increased.
500
Which of the following statements is true? a. humans may have been causing extinctions millions of years ago, but our impact has recently increased b. humans are responsible for many of the mass extinctions in the geologic record c. humans may have been causing extinctions thousands of years ago, but our impact has recently increased
What is c. humans may have been causing extinctions thousands of years ago, but our impact has recently increased
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