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Test your basic knowledge |
DSST Environment And Humanity
Start Test
Study First
Subjects
:
dsst
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A type of farming where the farmer will fell and burn down trees to grow crops. After a few years - he will move on and continue the process.
Shifting Agriculture
Keystone Species
Homo Erectus
Savannah
2. An act created to protect endangered and threatened species.
Stratosphere
Aldo Leopold
Biodiversity
Endangered Species Act
3. The rapid increase of harmful algae in a body of water.
Silent Spring
Biogeochemical Cycle
Evapotranspiration
Harmful Algal Bloom
4. The process by which a new species is created. This process generally requires geographic isolation to prevent interbreeding between the newly emerging species and the parent species.
Speciation
Prokaryotes
Ecological Niche
Deciduous Forest
5. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Acid Rain
Brackish Water
Superfund Law
National Environmental Policy Act
6. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Assimilation
Harmful Algal Bloom
Oligotrophs
Homo Sapiens
7. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Detrivores
Commensalism
UN Conference on Population and Development
Homo Sapiens
8. Evolution in one organism due to change in a related organism.
Insurance Spraying
Total Fertility Rate
Deciduous Forest
Coevolution
9. A UN conference that addressed the growing population problem.
Ecology
Gross Primary Product
UN Conference on Population and Development
Environmental Protection Agency
10. An influential book by Rachel Carson which helped begin the environmental movement.
Antarctica
Silent Spring
Stratosphere
Mesosphere
11. The crust and upper mantle of the earth.
Transpiration
Lithosphere
Non-government Organizations
Producers
12. The middle atmospheric layer. Meteors burn up after entering this layer.
Mesosphere
Biosphere
Thermosphere
Atmosphere
13. The cloudiness of a liquid due to small suspended particles.
Gross Primary Product
Turbidity
Wilderness Act
Social Ecology
14. The process of planting different plant species right next to each other to maximize one's yield.
Alley Cropping
Superfund Law
Interplanting
Browsers
15. The study of the interaction between organisms and their environment.
Carnivores
Ecology
Agroforestry
Detrivores
16. The amount of pests needed before spraying pesticides is economical.
Economic Threshold
Indicator Species
UN Conference on Population and Development
Sublimation
17. Average expected birth rate for 1 -000 women.
Total Fertility Rate
Toxic Substances Control Act
Symbiosis
Neanderthals
18. A forest near the equator with heavy rainfall and a great diversity of plant and animal life. Although a mere 2% of the earth is covered with these forests - they contain 50-80% of earth's land species.
Tropical Rain Forest
Deserts
Lithosphere
Ecology
19. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Surface Run-Off
Biosphere
Deserts
Detrivores
20. Growing only one crop at a time.
Carbon Dioxide
Eutrophication
Monoculture
Harmful Algal Bloom
21. A form of management which attempts to satisfy both the needs of humans and those of wildlife in the best way possible for both parties.
Coevolution
Carnivores
Wildlife Management
Community
22. The loss of water vapor from leaves.
R-Selected Populations
Temperature Inversion
Species
Transpiration
23. Animals which eat grass and roots.
Coevolution
Neanderthals
Brackish Water
Grazers
24. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Biogeochemical Cycle
Gross Primary Product
Deciduous Forest
Nitrogen Fixation
25. A transitional area between two different ecosystems.
Shifting Agriculture
Troposphere
Ecotone
Ecological Niche
26. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Snowmelt
Economic Threshold
Earth Summit
Toxic Substances Control Act
27. The process of a gas transforming into a liquid.
Social Ecology
Sahelanthropus Tchadensis
Condensation
Deserts
28. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Acid Rain
Competitive Exclusion
Copiotrophs
Omnivores
29. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Exosphere
Neanderthals
Keystone Species
Eukaryotes
30. A greenhouse gas. Although it is a natural part of the carbon cycle - the atmospheric concentration of this gas has increased due to the burning of fossil fuels.
Detrivores
Subsistence Farming
Insurance Spraying
Carbon Dioxide
31. The coexistence of two species using the same resource where the two will use the resource in different ways.
Clean Air Act
Condensation
Resource Partitioning
Troposphere
32. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Evaporation
Methane
Eukaryotes
Wildlife Management
33. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Ecosystem
Keystone Species
Deserts
Deciduous Forest
34. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Ecological Niche
Australopithecus Afarensis
Indicator Species
35. Political organizations not affiliated with the government which try to bring about social change.
Non-government Organizations
Autotrophs
Snowmelt
Mutualism
36. An unstable form of oxygen which protects the earth from UV radiation. Although naturally occurring in the stratosphere (upper atmosphere) - in the lower atmosphere this gas acts as a pollutant.
Symbiosis
Toxic Substances Control Act
Estuary
Ozone
37. The position of an organism on the food chain.
Environmental Protection Agency
Trophic Level
Mesosphere
Grasslands
38. A partially enclosed part of the ocean with rivers or streams flowing into it.
Detrivores
Estuary
Homo Erectus
Gross Primary Product
39. A community of species interacting with their nonliving (abiotic) environment.
Evapotranspiration
Copiotrophs
Ecosystem
Eutrophication
40. A layer of gasses surrounding the earth.
Surface Run-Off
Atmosphere
Shifting Agriculture
Assimilation
41. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Montreal Protocol
Australopithecus Afarensis
National Environmental Policy Act
Subsurface flow
42. Organisms which eat other organisms.
Kyoto Protocol
Detrivores
Consumers
Wildlife Management
43. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Deciduous Forest
Detrivores
Social Ecology
Estuary
44. A philosophy that extends ethics to non-humans. Under this system - animals - plants - and other aspects of the environment are seen as being deserving of justice and consideration.
Mesosphere
Environmental Ethics
Consumers
Ozone
45. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Ammonification
National Environmental Policy Act
Ecosystem
Browsers
46. The conversion of nitrates into nitrogen gas.
Ecological Niche
Denitrification
Homo Sapiens
Lithosphere
47. Organisms which create their own food out of inorganic (abiotic) substances.
Indicator Species
Denitrification
Producers
Evaporation
48. All members of a species which live in the same area.
Australopithecus Afarensis
Environmental Ethics
Population
Oligotrophs
49. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Estuary
Surface Run-Off
Nitrification
Vienna Convention for the Protection of the Ozone Layer
50. Populations characterized by small size - short lifespan - and lots of offspring.
Coniferous Forest
R-Selected Populations
Advection
UN Conference on Population and Development