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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. Populations characterized by small size - short lifespan - and lots of offspring.
Eutrophication
Eukaryotes
R-Selected Populations
Silent Spring
2. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Agroforestry
Troposphere
Population
Environmental Protection Agency
3. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Brackish Water
Insurance Spraying
Advection
Interception
4. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Stockholm Conference
Keystone Species
Organism
Grasslands
5. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Oligotrophs
Lithosphere
Snowmelt
Economic Threshold
6. Single-celled organisms which lack a nucleus.
Sublimation
Shifting Agriculture
Coevolution
Prokaryotes
7. 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.
Deciduous Forest
Shifting Agriculture
Prokaryotes
Ozone
8. The process of planting trees in between other crops.
Eukaryotes
Earth Summit
Infiltration
Alley Cropping
9. Exceptionally acidic (low pH) rain. This phenomenon is caused mainly by emissions of carbon dioxide - sulfur dioxide - and nitrogen oxide which react with water particles in the air.
Earth Summit
Symbiosis
Acid Rain
Ecosystem
10. Political organizations not affiliated with the government which try to bring about social change.
Non-government Organizations
Interplanting
Homo Habilis
Species
11. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Consumers
Ecological Niche
Agroforestry
Total Fertility Rate
12. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Kyoto Protocol
Neanderthals
Prokaryotes
Transpiration
13. The process of planting different plant species right next to each other to maximize one's yield.
Non-government Organizations
Interplanting
National Environmental Policy Act
Thermosphere
14. Any living thing on earth.
Agroforestry
Silent Spring
Organism
Biosphere
15. Consumers which eat only other animals.
Carnivores
Intensive Subsistence Farming
Sublimation
Earth Summit
16. A greenhouse gas which also plays a key role in regulating ozone levels.
Atmosphere
Eukaryotes
Trophic Level
Nitrous Oxide
17. Organisms with a nucleus.
Eukaryotes
Evaporation
Nitrification
Thermosphere
18. An extinct hominid species believed to be the last common ancestor between man and apes.
Sahelanthropus Tchadensis
Homo Sapiens
Speciation
Endangered Species Act
19. Organisms which produce their own food.
Alley Cropping
Autotrophs
Subsistence Farming
Antarctica
20. An act which protects certain lands as national parks.
Wilderness Act
Brackish Water
Water Pollution Control Act
Clean Air Act
21. The rapid increase of harmful algae in a body of water.
Keystone Species
Harmful Algal Bloom
Taiga
Intensive Subsistence Farming
22. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.
Clean Air Act
Thermosphere
Transpiration
Shifting Agriculture
23. The flow of water in the water table.
Evapotranspiration
Temperature Inversion
Subsurface flow
Agroforestry
24. The process by which pollutants are carried by flowing water - such as a river.
Transpiration
Temperate Rain Forest
Advection
Water Pollution Control Act
25. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Methane
Tropopause
Stratosphere
Australopithecus Afarensis
26. A UN conference that addressed the growing population problem.
Browsers
UN Conference on Population and Development
Species
Temperate Rain Forest
27. Precipitation which does not reach the soil but is instead collected by plants.
Agroforestry
Environmental Protection Agency
Interception
Nitrification
28. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Eukaryotes
Australopithecus Afarensis
Neanderthals
Stockholm Conference
29. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Carnivores
Carbon Dioxide
Surface Run-Off
Turbidity
30. Consumers which eat decomposing organic material.
Clean Air Act
Competitive Exclusion
Evapotranspiration
Detrivores
31. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Environmental Protection Agency
Insurance Spraying
Silent Spring
Detrivores
32. A type of symbiosis where each species will benefit from interacting with the other.
Mutualism
Air Pollution
Wilderness Act
Sublimation
33. 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.
Nitrogen Fixation
Environmental Ethics
Homo Habilis
Water Pollution Control Act
34. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Silent Spring
Deciduous Forest
Tropopause
Homo Habilis
35. The process of a gas transforming into a liquid.
Hydrosphere
Condensation
Taiga
Biogeochemical Cycle
36. 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.
Taiga
Sahelanthropus Tchadensis
Environmental Ethics
Speciation
37. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Subsistence Farming
Evapotranspiration
Clean Air Act
Montreal Protocol
38. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Stratosphere
Nitrogen Fixation
Aldo Leopold
Coevolution
39. An act created to protect endangered and threatened species.
Tropical Rain Forest
Neanderthals
Endangered Species Act
Cosmetic Spraying
40. All of the water found on earth.
Biogeochemical Cycle
Hydrosphere
Prokaryotes
Trophic Level
41. An international organization designed to promote free trade between countries.
Biogeochemical Cycle
Brackish Water
World Trade Organization
Transpiration
42. A community of species interacting with their nonliving (abiotic) environment.
Biomes
Ecosystem
Estuary
Copiotrophs
43. An international protocol designed to stabilize global warming.
Competitive Exclusion
Exosphere
Evaporation
Kyoto Protocol
44. Also called that water cycle - this process describes the cycling of water throughout the environment. The stages of this cycle are evaporation - condensation - transportation - precipitation - infiltration and percolation - and run off.
Hydrologic Cycle
Turbidity
Wildlife Management
Trophic Level
45. The cloudiness of a liquid due to small suspended particles.
Turbidity
Sahelanthropus Tchadensis
Detrivores
Superfund Law
46. The uppermost atmospheric layer. Here satellites orbit the earth.
Temperature Inversion
Tropopause
Assimilation
Exosphere
47. A theory that our current ecological problems are a product of deeper social problems.
Social Ecology
Symbiosis
Autotrophs
National Environmental Policy Act
48. Populations characterized by large size - long lifespan - and few offspring.
Earth Summit
Total Fertility Rate
K-Selected Populations
Stockholm Conference
49. A community of similar living organisms largely affected by the area's climate.
Biomes
Omnivores
Temperate Rain Forest
Turbidity
50. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Acid Rain
Precipitation
Symbiosis
Homo Habilis