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Test your basic knowledge |
DSST Environment And Humanity
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Subjects
:
dsst
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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. Growing only one crop at a time.
Monoculture
Detrivores
Homo Habilis
Polyculture
2. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Oligotrophs
Water Pollution Control Act
Evapotranspiration
Chaparral
3. Consumers which eat only other animals.
Subsurface flow
Carnivores
Safe Drinking Water Act
Transpiration
4. 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.
Copiotrophs
Competitive Exclusion
Community
Clean Air Act
5. The conversion of nitrates into nitrogen gas.
Lithosphere
Keystone Species
Tropopause
Denitrification
6. A layer of gasses surrounding the earth.
Atmosphere
Subsistence Farming
Biosphere
Copiotrophs
7. Average expected birth rate for 1 -000 women.
Total Fertility Rate
Air Pollution
Ecological Niche
Estuary
8. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Tropical Rain Forest
Taiga
Ecotone
Deciduous Forest
9. A bloom of phytoplankton in a body of water caused by an abnormal increase in nutrients. This process depletes the water's oxygen level - killing off other aquatic organisms.
Organism
Eutrophication
Polyculture
World Trade Organization
10. 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.
Ecology
Deserts
Sahelanthropus Tchadensis
Consumers
11. An international protocol designed to stabilize global warming.
Kyoto Protocol
Harmful Algal Bloom
Grasslands
Subsurface flow
12. The uppermost atmospheric layer. Here satellites orbit the earth.
Exosphere
R-Selected Populations
Biodiversity
Temperature Inversion
13. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Ecosystem
Mutualism
Sublimation
Biodiversity
14. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Parasitism
Troposphere
Biogeochemical Cycle
Turbidity
15. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Cosmetic Spraying
R-Selected Populations
Ecological Niche
Toxic Substances Control Act
16. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Insurance Spraying
Safe Drinking Water Act
Brackish Water
Monoculture
17. Precipitation which does not reach the soil but is instead collected by plants.
Interception
Coniferous Forest
Harmful Algal Bloom
Ecotone
18. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Biomes
Non-government Organizations
Consumers
Environmental Protection Agency
19. Animals which eat grass and roots.
Biodiversity
Turbidity
Methane
Grazers
20. An act which protects certain lands as national parks.
Social Ecology
Wilderness Act
Autotrophs
Oligotrophs
21. Plants taking in nitrates from the soil.
Assimilation
Subsurface flow
Carbon Dioxide
Evapotranspiration
22. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Total Fertility Rate
Denitrification
Earth Summit
Biodiversity
23. A greenhouse gas which also plays a key role in regulating ozone levels.
National Environmental Policy Act
Autotrophs
Environmental Ethics
Nitrous Oxide
24. A community of similar living organisms largely affected by the area's climate.
Ecological Niche
Interplanting
Biomes
Species
25. 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.
Producers
Homo Erectus
Carbon Dioxide
Biodiversity
26. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Eutrophication
Stratosphere
Monoculture
Social Ecology
27. The amount of pests needed before spraying pesticides is economical.
Evapotranspiration
Deserts
Economic Threshold
Ecotone
28. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Agroforestry
Eutrophication
Stratosphere
Commensalism
29. Organisms which produce their own food.
UN Conference on Population and Development
Autotrophs
Ecology
Hetrotrophs
30. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Evaporation
Shifting Agriculture
Earth Summit
Toxic Substances Control Act
31. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Nitrogen Fixation
Producers
Chaparral
Carbon Dioxide
32. Populations characterized by large size - long lifespan - and few offspring.
K-Selected Populations
Grasslands
Shifting Agriculture
Social Ecology
33. An influential book by Rachel Carson which helped begin the environmental movement.
Silent Spring
Commensalism
Tropical Rain Forest
Cosmetic Spraying
34. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Population
Copiotrophs
Troposphere
Subsurface flow
35. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Subsistence Farming
Denitrification
R-Selected Populations
Exosphere
36. A partially enclosed part of the ocean with rivers or streams flowing into it.
Community
Evapotranspiration
Subsistence Farming
Estuary
37. The loss of water vapor from leaves.
Denitrification
Symbiosis
Grasslands
Transpiration
38. An act requiring federal agencies to detail the impact of proposed environmental policies.
Ecology
National Environmental Policy Act
Stratosphere
Parasitism
39. The cloudiness of a liquid due to small suspended particles.
Safe Drinking Water Act
Ecology
Deserts
Turbidity
40. 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.
Acid Rain
Environmental Ethics
Water Pollution Control Act
Brackish Water
41. A group of similar organisms capable of interbreeding.
Species
Prokaryotes
Vienna Convention for the Protection of the Ozone Layer
Wildlife Management
42. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Environmental Protection Agency
Surface Run-Off
Grasslands
Mesosphere
43. Evolution in one organism due to change in a related organism.
Evapotranspiration
Surface Run-Off
Omnivores
Coevolution
44. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Wildlife Management
Aldo Leopold
Tropopause
Polyculture
45. 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.
Deciduous Forest
Ecotone
Chaparral
Homo Habilis
46. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Ozone
Neanderthals
Detrivores
Homo Habilis
47. The flow of water in the water table.
Biosphere
R-Selected Populations
Gross Primary Product
Subsurface flow
48. 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.
Intensive Subsistence Farming
Subsurface flow
Community
Carbon Dioxide
49. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Agroforestry
Australopithecus Afarensis
Environmental Protection Agency
Hydrologic Cycle
50. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Ecotone
Atmosphere
Commensalism
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