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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 process of a gas transforming into a liquid.
Silent Spring
Shifting Agriculture
Condensation
Nitrification
2. A partially enclosed part of the ocean with rivers or streams flowing into it.
Grasslands
Snowmelt
Estuary
Browsers
3. The loss of water vapor from leaves.
Transpiration
Environmental Ethics
Biogeochemical Cycle
Producers
4. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Alley Cropping
Keystone Species
Snowmelt
Deserts
5. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Eukaryotes
Clean Air Act
Subsistence Farming
Consumers
6. The spraying of pesticides to prevent a pest problem before it happens.
Insurance Spraying
Indicator Species
Interception
Competitive Exclusion
7. A layer of gasses surrounding the earth.
Subsurface flow
Monoculture
Taiga
Atmosphere
8. An international protocol designed to stabilize global warming.
Antarctica
Kyoto Protocol
Consumers
Biodiversity
9. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Air Pollution
Clean Air Act
Nitrogen Fixation
K-Selected Populations
10. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Hetrotrophs
Methane
Alley Cropping
R-Selected Populations
11. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Homo Erectus
Precipitation
Producers
Taiga
12. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Coniferous Forest
Harmful Algal Bloom
Taiga
Troposphere
13. Also called that water cycle - this process describes the cycling of water throughout the environment. The stages of this cycle are evaporation - condensation - transportation - precipitation - infiltration and percolation - and run off.
Hydrologic Cycle
Biomes
Assimilation
Oligotrophs
14. 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.
Omnivores
Troposphere
Ozone
Stockholm Conference
15. Populations characterized by large size - long lifespan - and few offspring.
Detrivores
Symbiosis
K-Selected Populations
Speciation
16. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Antarctica
Biogeochemical Cycle
Ozone
17. A UN conference that addressed the growing population problem.
Evaporation
Ozone
UN Conference on Population and Development
Neanderthals
18. 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 Sapiens
Homo Erectus
Evapotranspiration
Coniferous Forest
19. The middle atmospheric layer. Meteors burn up after entering this layer.
Clean Air Act
Mesosphere
Advection
Ozone
20. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.
Ammonification
Estuary
Thermosphere
Interception
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
Social Ecology
Agroforestry
Air Pollution
Australopithecus Afarensis
22. A type of symbiosis where each species will benefit from interacting with the other.
Mutualism
Subsurface flow
Subsistence Farming
Safe Drinking Water Act
23. The amount of pests needed before spraying pesticides is economical.
Clean Air Act
Economic Threshold
Evapotranspiration
Trophic Level
24. Organisms with a nucleus.
Transpiration
UN Conference on Population and Development
Eukaryotes
Monoculture
25. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Shifting Agriculture
Kyoto Protocol
Agroforestry
Chaparral
26. 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.
Prokaryotes
Transpiration
Oligotrophs
Biodiversity
27. Organisms which produce their own food.
National Environmental Policy Act
Surface Run-Off
Autotrophs
Clean Air Act
28. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Earth Summit
Tropopause
Environmental Protection Agency
Competitive Exclusion
29. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Superfund Law
Savannah
Symbiosis
Evaporation
30. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Homo Habilis
Temperate Rain Forest
Ecological Niche
Environmental Protection Agency
31. All of the water found on earth.
Hydrosphere
Monoculture
Ecological Niche
Infiltration
32. Animals which eat leaves and shoots.
Toxic Substances Control Act
Browsers
Snowmelt
Producers
33. 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.
Homo Erectus
Troposphere
Assimilation
Acid Rain
34. Evolution in one organism due to change in a related organism.
Toxic Substances Control Act
Coevolution
Infiltration
Prokaryotes
35. A group of similar organisms capable of interbreeding.
Nitrous Oxide
Species
Ozone
Evaporation
36. A variety of species living together.
Subsurface flow
Clean Air Act
Harmful Algal Bloom
Community
37. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Homo Erectus
Denitrification
Surface Run-Off
Keystone Species
38. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Monoculture
Exosphere
Superfund Law
Stratosphere
39. An influential book by Rachel Carson which helped begin the environmental movement.
Silent Spring
Social Ecology
R-Selected Populations
Assimilation
40. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Hetrotrophs
Australopithecus Afarensis
Infiltration
Sublimation
41. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Aldo Leopold
R-Selected Populations
UN Conference on Population and Development
Vienna Convention for the Protection of the Ozone Layer
42. The process of planting different plant species right next to each other to maximize one's yield.
Interplanting
Mesosphere
Cosmetic Spraying
Ecotone
43. Organisms which create their own food out of inorganic (abiotic) substances.
Cosmetic Spraying
Acid Rain
Thermosphere
Producers
44. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Consumers
Environmental Protection Agency
Superfund Law
Population
45. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Speciation
Evapotranspiration
Total Fertility Rate
Biomes
46. The uppermost atmospheric layer. Here satellites orbit the earth.
Alley Cropping
Exosphere
Clean Air Act
Symbiosis
47. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Homo Erectus
Biogeochemical Cycle
Subsistence Farming
Vienna Convention for the Protection of the Ozone Layer
48. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Economic Threshold
Brackish Water
Producers
Sahelanthropus Tchadensis
49. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Non-government Organizations
Homo Sapiens
Clean Air Act
Nitrification
50. Growing only one crop at a time.
Ammonification
Monoculture
Trophic Level
Subsistence Farming