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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 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.
Biogeochemical Cycle
Commensalism
K-Selected Populations
Biodiversity
2. Average expected birth rate for 1 -000 women.
Troposphere
Condensation
Harmful Algal Bloom
Total Fertility Rate
3. Organisms with a nucleus.
Symbiosis
Tundra
Endangered Species Act
Eukaryotes
4. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Alley Cropping
Brackish Water
Copiotrophs
Surface Run-Off
5. The middle atmospheric layer. Meteors burn up after entering this layer.
Evaporation
Competitive Exclusion
Mesosphere
Biogeochemical Cycle
6. 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.
Non-government Organizations
Shifting Agriculture
Autotrophs
Environmental Ethics
7. All of the ecosystems on earth.
Coniferous Forest
Keystone Species
Thermosphere
Biosphere
8. An extinct hominid species believed to be the last common ancestor between man and apes.
Estuary
Sahelanthropus Tchadensis
Biodiversity
Exosphere
9. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Superfund Law
Temperature Inversion
Population
Acid Rain
10. The spraying of pesticides to prevent a pest problem before it happens.
Stockholm Conference
Social Ecology
Economic Threshold
Insurance Spraying
11. The process of planting trees in between other crops.
Alley Cropping
Tundra
Stratosphere
Neanderthals
12. Different species living in close contact with each other.
Copiotrophs
Symbiosis
Coniferous Forest
Nitrogen Fixation
13. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Autotrophs
Chaparral
Toxic Substances Control Act
Brackish Water
14. The uppermost atmospheric layer. Here satellites orbit the earth.
Biodiversity
Subsistence Farming
Exosphere
Commensalism
15. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Evapotranspiration
Snowmelt
Homo Habilis
Wilderness Act
16. An act requiring federal agencies to detail the impact of proposed environmental policies.
Social Ecology
Hydrologic Cycle
National Environmental Policy Act
Economic Threshold
17. A community of species interacting with their nonliving (abiotic) environment.
Ecosystem
Stockholm Conference
Aldo Leopold
Stratosphere
18. 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.
Antarctica
Competitive Exclusion
Speciation
Biomes
19. 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
Endangered Species Act
Biomes
Environmental Ethics
20. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Exosphere
Vienna Convention for the Protection of the Ozone Layer
Infiltration
Alley Cropping
21. Consumers which eat decomposing organic material.
Insurance Spraying
Detrivores
Population
Interplanting
22. A group of similar organisms capable of interbreeding.
Savannah
Infiltration
Transpiration
Species
23. The conversion of nitrates into nitrogen gas.
Deserts
Hydrologic Cycle
Non-government Organizations
Denitrification
24. A type of symbiosis where one species benefit at the expense of the other.
Parasitism
Autotrophs
Biodiversity
Eukaryotes
25. 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.
Consumers
Wildlife Management
Deserts
Carnivores
26. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Gross Primary Product
Speciation
Neanderthals
Kyoto Protocol
27. Plants taking in nitrates from the soil.
Taiga
Assimilation
R-Selected Populations
Organism
28. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Economic Threshold
Parasitism
Biomes
29. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Aldo Leopold
Advection
Australopithecus Afarensis
Oligotrophs
30. The study of the interaction between organisms and their environment.
Ecology
Aldo Leopold
Carbon Dioxide
Thermosphere
31. A type of farming where the farmer will grow crops both to fulfill his family's needs for the next year and to sell on the market.
Autotrophs
Intensive Subsistence Farming
Nitrification
Snowmelt
32. A transitional area between two different ecosystems.
Ecotone
Grazers
Interplanting
Endangered Species Act
33. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Snowmelt
Savannah
Subsurface flow
Tundra
34. Modern man.
Homo Habilis
Homo Sapiens
Agroforestry
Aldo Leopold
35. An act which required the EPA to set standards for drinking water.
Trophic Level
Safe Drinking Water Act
Mutualism
Precipitation
36. The crust and upper mantle of the earth.
Insurance Spraying
Lithosphere
Interplanting
Snowmelt
37. Political organizations not affiliated with the government which try to bring about social change.
Wilderness Act
Non-government Organizations
Chaparral
Biogeochemical Cycle
38. A theory that our current ecological problems are a product of deeper social problems.
Carnivores
Social Ecology
Wilderness Act
Population
39. A greenhouse gas which also plays a key role in regulating ozone levels.
Antarctica
Infiltration
Nitrous Oxide
Oligotrophs
40. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Chaparral
Ozone
Sublimation
Keystone Species
41. 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.
Australopithecus Afarensis
Ozone
Grasslands
Intensive Subsistence Farming
42. Organisms which create their own food out of inorganic (abiotic) substances.
Commensalism
Assimilation
Producers
Stratosphere
43. Populations characterized by small size - short lifespan - and lots of offspring.
Stratosphere
R-Selected Populations
Hydrosphere
Nitrogen Fixation
44. The spraying of pesticides to keep produce from any injuries or damage.
Savannah
Cosmetic Spraying
Keystone Species
Lithosphere
45. Precipitation which does not reach the soil but is instead collected by plants.
Earth Summit
Interception
Gross Primary Product
Clean Air Act
46. All members of a species which live in the same area.
Endangered Species Act
UN Conference on Population and Development
Population
Silent Spring
47. 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.
Temperature Inversion
Eutrophication
Acid Rain
Ozone
48. Single-celled organisms which lack a nucleus.
Prokaryotes
Biomes
Nitrous Oxide
Detrivores
49. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Brackish Water
Grasslands
Nitrification
Sublimation
50. Any living thing on earth.
Organism
Polyculture
Environmental Ethics
Sublimation