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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. The cloudiness of a liquid due to small suspended particles.
Sahelanthropus Tchadensis
Parasitism
Denitrification
Turbidity
2. Organisms which consume autotrophs for food.
Antarctica
Hetrotrophs
Eutrophication
Turbidity
3. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.
Silent Spring
Non-government Organizations
Evaporation
Surface Run-Off
4. A type of symbiosis where each species will benefit from interacting with the other.
Economic Threshold
Ammonification
Mutualism
Homo Erectus
5. Organisms which eat other organisms.
Carbon Dioxide
Commensalism
Ecosystem
Consumers
6. The process of a gas transforming into a liquid.
Acid Rain
Polyculture
Condensation
Mutualism
7. A greenhouse gas which also plays a key role in regulating ozone levels.
Polyculture
Intensive Subsistence Farming
Commensalism
Nitrous Oxide
8. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Ecological Niche
Superfund Law
Brackish Water
Temperature Inversion
9. A partially enclosed part of the ocean with rivers or streams flowing into it.
Biodiversity
Consumers
Trophic Level
Estuary
10. Populations characterized by large size - long lifespan - and few offspring.
Homo Sapiens
Advection
K-Selected Populations
Neanderthals
11. Biomes with less than 10 inches of rain a year. Foliage is scarce in these areas - and remaining plants and animals work hard to conserve the little water they receive.
National Environmental Policy Act
Australopithecus Afarensis
Deserts
Air Pollution
12. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Carnivores
Eutrophication
Omnivores
Stratosphere
13. 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.
Wildlife Management
Nitrous Oxide
Denitrification
Agroforestry
14. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Brackish Water
R-Selected Populations
Agroforestry
Interception
15. Growing only one crop at a time.
Biosphere
Environmental Ethics
Monoculture
Nitrogen Fixation
16. The process by which pollutants are carried by flowing water - such as a river.
Biogeochemical Cycle
Polyculture
Prokaryotes
Advection
17. The position of an organism on the food chain.
Ecosystem
Earth Summit
Trophic Level
Sublimation
18. Different species living in close contact with each other.
Nitrous Oxide
Omnivores
Symbiosis
Population
19. Single-celled organisms which lack a nucleus.
Hetrotrophs
Economic Threshold
Prokaryotes
Nitrogen Fixation
20. Political organizations not affiliated with the government which try to bring about social change.
Species
Subsistence Farming
Non-government Organizations
Condensation
21. The infiltration of harmful chemicals - particles - or biological matter into the atmosphere which endanger living organisms. Pollutants include sulfur and nitrogen oxides - ammonia - and chlorofluorocarbons. Although there are natural sources for th
Air Pollution
Biogeochemical Cycle
UN Conference on Population and Development
Agroforestry
22. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Estuary
Tundra
Ecology
Denitrification
23. A community of similar living organisms largely affected by the area's climate.
Silent Spring
Clean Air Act
Evapotranspiration
Biomes
24. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Savannah
Ammonification
Ecology
Air Pollution
25. The rapid increase of harmful algae in a body of water.
Prokaryotes
Harmful Algal Bloom
Grazers
Tropopause
26. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Deserts
National Environmental Policy Act
Mutualism
Infiltration
27. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Interception
Sublimation
Competitive Exclusion
Environmental Ethics
28. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Polyculture
Evapotranspiration
Homo Habilis
29. A principle that states that two species competing for a single resource cannot coexist. One species will inevitably gain an advantage over the other - causing the looser either to migrate or to become extinct.
Competitive Exclusion
Superfund Law
Taiga
Stratosphere
30. A shubland found primarily in the South-Western United States and Mexico. Fire plays a predominant role in the life-cycle of the plants in this area - the seeds of which will sprout only after a fire.
Producers
Keystone Species
Chaparral
Mutualism
31. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Carbon Dioxide
Ammonification
Producers
Lithosphere
32. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Subsistence Farming
Parasitism
Ozone
Aldo Leopold
33. Plants taking in nitrates from the soil.
Coevolution
Assimilation
Atmosphere
Carbon Dioxide
34. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Nitrous Oxide
Sublimation
Economic Threshold
Tropopause
35. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Superfund Law
Producers
Australopithecus Afarensis
Environmental Ethics
36. Consumers which eat only other animals.
UN Conference on Population and Development
Non-government Organizations
Condensation
Carnivores
37. 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.
Methane
Transpiration
Assimilation
Carbon Dioxide
38. 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.
Shifting Agriculture
Stockholm Conference
Copiotrophs
Tropical Rain Forest
39. An international organization designed to promote free trade between countries.
Copiotrophs
Ecology
Deciduous Forest
World Trade Organization
40. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Grasslands
Community
Taiga
R-Selected Populations
41. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Ecotone
Autotrophs
Copiotrophs
Trophic Level
42. The southern-most continent - of which 98% is ice. This continent includes 70% of the world's fresh water - and 90% of the world's ice. Although the average temperature is -49
Prokaryotes
Agroforestry
National Environmental Policy Act
Antarctica
43. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Carbon Dioxide
Species
Earth Summit
Competitive Exclusion
44. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Australopithecus Afarensis
Coniferous Forest
Aldo Leopold
Tropopause
45. An international protocol designed to stabilize global warming.
Tundra
Kyoto Protocol
Environmental Protection Agency
Coniferous Forest
46. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Evapotranspiration
Brackish Water
Methane
Stockholm Conference
47. An act requiring federal agencies to detail the impact of proposed environmental policies.
Stratosphere
Cosmetic Spraying
National Environmental Policy Act
Community
48. Forests found in the northern regions of North America - Europe - and Asia characterized by freezing winters and warmer summers. These forests lie just below the tree line.
Denitrification
Transpiration
Taiga
Air Pollution
49. A community of species interacting with their nonliving (abiotic) environment.
R-Selected Populations
Ecosystem
Mesosphere
Subsistence Farming
50. The amount of variation among organisms living in a particular ecosystem. The loss of this key characteristic leads to a reduction in ecosystem efficiency and the ability of species to adapt to new situations.
Neanderthals
Biodiversity
Endangered Species Act
Silent Spring