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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. Consumers which eat only other animals.
Carnivores
Carbon Dioxide
Homo Sapiens
Montreal Protocol
2. An international organization designed to promote free trade between countries.
Deciduous Forest
Condensation
World Trade Organization
Ecology
3. A variety of species living together.
World Trade Organization
Autotrophs
Community
Wildlife Management
4. Animals which eat grass and roots.
Non-government Organizations
Methane
Grazers
Alley Cropping
5. Growing more than one crop at a time.
Community
Polyculture
Lithosphere
Safe Drinking Water Act
6. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Homo Sapiens
Methane
Superfund Law
Hydrologic Cycle
7. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Deciduous Forest
Nitrogen Fixation
Evaporation
Condensation
8. An international protocol designed to stabilize global warming.
Resource Partitioning
Kyoto Protocol
Sahelanthropus Tchadensis
Ecological Niche
9. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Tundra
Consumers
Australopithecus Afarensis
Community
10. An extinct hominid species with near the same brain capacity as modern man believed to use fire and stone tools - live a hunter/gatherer lifestyle - and speak a language.
Homo Erectus
Toxic Substances Control Act
UN Conference on Population and Development
Chaparral
11. The process by which pollutants are carried by flowing water - such as a river.
Silent Spring
Advection
Sublimation
Safe Drinking Water Act
12. The process of planting trees in between other crops.
Alley Cropping
Insurance Spraying
Interception
Speciation
13. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Sublimation
Earth Summit
Thermosphere
Eukaryotes
14. Surface run-off caused by melted snow.
Snowmelt
Gross Primary Product
Consumers
Environmental Protection Agency
15. An act requiring federal agencies to detail the impact of proposed environmental policies.
Social Ecology
Agroforestry
Nitrogen Fixation
National Environmental Policy Act
16. Average expected birth rate for 1 -000 women.
Troposphere
Ecosystem
Total Fertility Rate
Sublimation
17. The process of planting different plant species right next to each other to maximize one's yield.
Species
Interplanting
Shifting Agriculture
Ecosystem
18. A transitional area between two different ecosystems.
Methane
Grasslands
Ecotone
Commensalism
19. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Stratosphere
Temperate Rain Forest
Nitrous Oxide
Montreal Protocol
20. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Ecological Niche
Exosphere
Antarctica
Evaporation
21. 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.
Infiltration
Alley Cropping
Ozone
Toxic Substances Control Act
22. An act which set standards for the amount of pollution in water.
Carbon Dioxide
Water Pollution Control Act
Economic Threshold
Deciduous Forest
23. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Economic Threshold
Infiltration
Grasslands
Lithosphere
24. Consumers which eat decomposing organic material.
Atmosphere
Surface Run-Off
Detrivores
Homo Sapiens
25. Precipitation which does not reach the soil but is instead collected by plants.
Nitrogen Fixation
Mutualism
Interception
National Environmental Policy Act
26. 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.
Thermosphere
Evapotranspiration
Competitive Exclusion
K-Selected Populations
27. A community of similar living organisms largely affected by the area's climate.
Monoculture
R-Selected Populations
Biomes
Shifting Agriculture
28. 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.
Earth Summit
Homo Erectus
Wildlife Management
Sahelanthropus Tchadensis
29. The position of an organism on the food chain.
Eutrophication
Speciation
Interception
Trophic Level
30. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Subsistence Farming
Trophic Level
Tropopause
Acid Rain
31. The flow of water in the water table.
Gross Primary Product
Subsurface flow
Temperate Rain Forest
Sublimation
32. The cloudiness of a liquid due to small suspended particles.
Ecosystem
Subsurface flow
Oligotrophs
Turbidity
33. A community of species interacting with their nonliving (abiotic) environment.
Australopithecus Afarensis
Evapotranspiration
Antarctica
Ecosystem
34. 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
Economic Threshold
Temperate Rain Forest
Deserts
Air Pollution
35. The conversion of nitrates into nitrogen gas.
Turbidity
Denitrification
Biosphere
Polyculture
36. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Grasslands
Clean Air Act
Australopithecus Afarensis
Biogeochemical Cycle
37. 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
Autotrophs
Interception
Eukaryotes
38. Consumers which eat both plants and animals.
Australopithecus Afarensis
Neanderthals
Cosmetic Spraying
Omnivores
39. Organisms which produce their own food.
Lithosphere
Economic Threshold
Australopithecus Afarensis
Autotrophs
40. The middle atmospheric layer. Meteors burn up after entering this layer.
Eutrophication
Troposphere
Mesosphere
Evapotranspiration
41. Single-celled organisms which lack a nucleus.
Total Fertility Rate
Prokaryotes
Biosphere
Hetrotrophs
42. The spraying of pesticides to prevent a pest problem before it happens.
Insurance Spraying
Nitrogen Fixation
Earth Summit
Carnivores
43. 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.
Environmental Ethics
Carnivores
Detrivores
Earth Summit
44. The loss of water vapor from leaves.
Exosphere
Silent Spring
Transpiration
Turbidity
45. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Tropopause
Stockholm Conference
Gross Primary Product
Keystone Species
46. A layer of gasses surrounding the earth.
Environmental Ethics
Stratosphere
Ozone
Atmosphere
47. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Homo Sapiens
Exosphere
Aldo Leopold
Brackish Water
48. An international convention which created the framework for protecting the ozone layer.
UN Conference on Population and Development
Superfund Law
Vienna Convention for the Protection of the Ozone Layer
Detrivores
49. An act which established and enforced acceptable levels of air pollution.
Symbiosis
Clean Air Act
Parasitism
Homo Habilis
50. 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.
Surface Run-Off
Nitrogen Fixation
Hydrologic Cycle
Speciation