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Test your basic knowledge |
DSST Environment And Humanity
Start Test
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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. A type of symbiosis where one species benefit at the expense of the other.
Nitrogen Fixation
Parasitism
Keystone Species
Ecology
2. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Surface Run-Off
Environmental Ethics
Assimilation
Detrivores
3. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Insurance Spraying
Grasslands
Hydrologic Cycle
Ammonification
4. A partially enclosed part of the ocean with rivers or streams flowing into it.
Competitive Exclusion
Biodiversity
Estuary
Endangered Species Act
5. The flow of water in the water table.
Community
Environmental Protection Agency
Cosmetic Spraying
Subsurface flow
6. Populations characterized by large size - long lifespan - and few offspring.
K-Selected Populations
Homo Habilis
Omnivores
Superfund Law
7. The middle atmospheric layer. Meteors burn up after entering this layer.
Biodiversity
Community
Evaporation
Mesosphere
8. The UN's first major conference on environmental issues.
Biogeochemical Cycle
Estuary
Homo Sapiens
Stockholm Conference
9. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Homo Habilis
Troposphere
Chaparral
Polyculture
10. Single-celled organisms which lack a nucleus.
Prokaryotes
Social Ecology
Air Pollution
Mesosphere
11. The cloudiness of a liquid due to small suspended particles.
Montreal Protocol
Evapotranspiration
Stratosphere
Turbidity
12. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Harmful Algal Bloom
Producers
Nitrogen Fixation
Carnivores
13. 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.
Chaparral
Sahelanthropus Tchadensis
Sublimation
Clean Air Act
14. Organisms which produce their own food.
Ecotone
UN Conference on Population and Development
Autotrophs
Chaparral
15. Organisms with a nucleus.
Subsurface flow
Eukaryotes
Coevolution
Carnivores
16. 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.
Homo Habilis
Grasslands
Mutualism
Environmental Ethics
17. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Australopithecus Afarensis
Chaparral
Browsers
Symbiosis
18. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Savannah
Evapotranspiration
Producers
Aldo Leopold
19. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Grazers
Ozone
Earth Summit
Population
20. 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.
Surface Run-Off
Hydrologic Cycle
K-Selected Populations
Intensive Subsistence Farming
21. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Grazers
Kyoto Protocol
Turbidity
Brackish Water
22. 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.
Ammonification
Eutrophication
Producers
Homo Erectus
23. A rainforest in the temperate zone which receives heavy rainfall.
Agroforestry
Economic Threshold
Total Fertility Rate
Temperate Rain Forest
24. 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.
Eutrophication
Wildlife Management
Ecosystem
Keystone Species
25. All of the ecosystems on earth.
Biosphere
Biogeochemical Cycle
Clean Air Act
Infiltration
26. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Aldo Leopold
Cosmetic Spraying
R-Selected Populations
Infiltration
27. 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
Estuary
National Environmental Policy Act
Resource Partitioning
28. The uppermost atmospheric layer. Here satellites orbit the earth.
Brackish Water
Assimilation
Exosphere
Speciation
29. The process of planting different plant species right next to each other to maximize one's yield.
Troposphere
Interplanting
Deserts
Australopithecus Afarensis
30. An act which established and enforced acceptable levels of air pollution.
Clean Air Act
Oligotrophs
Carnivores
Eutrophication
31. 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.
Kyoto Protocol
Acid Rain
Denitrification
Interplanting
32. An international protocol designed to stabilize global warming.
Turbidity
Environmental Ethics
Intensive Subsistence Farming
Kyoto Protocol
33. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Montreal Protocol
Wildlife Management
Oligotrophs
Competitive Exclusion
34. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Sahelanthropus Tchadensis
Toxic Substances Control Act
Neanderthals
Indicator Species
35. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.
Ecology
Thermosphere
Coniferous Forest
Methane
36. Animals which eat grass and roots.
Sublimation
Grazers
Detrivores
Interplanting
37. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Methane
Brackish Water
Coniferous Forest
Montreal Protocol
38. 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.
Population
Agroforestry
Safe Drinking Water Act
Deserts
39. 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.
Consumers
Taiga
R-Selected Populations
Oligotrophs
40. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Kyoto Protocol
Agroforestry
Exosphere
Surface Run-Off
41. A forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.
Parasitism
Coniferous Forest
Omnivores
Producers
42. All of the water found on earth.
Tundra
Hydrosphere
Homo Sapiens
Carbon Dioxide
43. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Subsurface flow
Atmosphere
Nitrification
Temperate Rain Forest
44. The process of planting trees in between other crops.
Intensive Subsistence Farming
Turbidity
Alley Cropping
Biodiversity
45. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Ecotone
Biogeochemical Cycle
Tropical Rain Forest
Biomes
46. The conversion of nitrates into nitrogen gas.
Gross Primary Product
Denitrification
Thermosphere
Ozone
47. 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
Social Ecology
Denitrification
Acid Rain
48. Plants taking in nitrates from the soil.
Producers
Grazers
Assimilation
Prokaryotes
49. Evolution in one organism due to change in a related organism.
Ozone
Community
Stratosphere
Coevolution
50. Organisms which consume autotrophs for food.
Economic Threshold
Hetrotrophs
Browsers
Producers
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