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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. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Monoculture
Homo Sapiens
Population
Indicator Species
2. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Economic Threshold
Interception
Precipitation
3. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Intensive Subsistence Farming
Grazers
Subsistence Farming
Autotrophs
4. Organisms which produce their own food.
Autotrophs
Brackish Water
Nitrification
Deserts
5. 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.
Snowmelt
Tropopause
Biodiversity
Keystone Species
6. An extinct hominid species believed to be the last common ancestor between man and apes.
Hetrotrophs
Acid Rain
Sahelanthropus Tchadensis
Assimilation
7. The southern-most continent - of which 98% is ice. This continent includes 70% of the world's fresh water - and 90% of the world's ice. Although the average temperature is -49
Infiltration
Oligotrophs
Resource Partitioning
Antarctica
8. A greenhouse gas which also plays a key role in regulating ozone levels.
Keystone Species
Montreal Protocol
Thermosphere
Nitrous Oxide
9. An influential book by Rachel Carson which helped begin the environmental movement.
Silent Spring
Clean Air Act
Detrivores
Sahelanthropus Tchadensis
10. Plants taking in nitrates from the soil.
Earth Summit
Evaporation
Shifting Agriculture
Assimilation
11. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Infiltration
Methane
Advection
K-Selected Populations
12. 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.
Oligotrophs
Savannah
Ozone
Sublimation
13. An international protocol designed to stabilize global warming.
Carbon Dioxide
Environmental Ethics
Ecological Niche
Kyoto Protocol
14. The crust and upper mantle of the earth.
Toxic Substances Control Act
Cosmetic Spraying
Lithosphere
Assimilation
15. A community of species interacting with their nonliving (abiotic) environment.
Consumers
Air Pollution
Homo Habilis
Ecosystem
16. A greenhouse gas. Although it is a natural part of the carbon cycle - the atmospheric concentration of this gas has increased due to the burning of fossil fuels.
Endangered Species Act
Carbon Dioxide
Brackish Water
Commensalism
17. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Snowmelt
Aldo Leopold
Ecosystem
Hydrosphere
18. The position of an organism on the food chain.
Trophic Level
Commensalism
Homo Sapiens
Species
19. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Trophic Level
Evaporation
Savannah
Keystone Species
20. Political organizations not affiliated with the government which try to bring about social change.
Sahelanthropus Tchadensis
Temperate Rain Forest
Non-government Organizations
Savannah
21. A rainforest in the temperate zone which receives heavy rainfall.
Assimilation
Ecosystem
Temperate Rain Forest
Troposphere
22. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Earth Summit
Acid Rain
Homo Habilis
Lithosphere
23. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Antarctica
Ammonification
Environmental Protection Agency
Speciation
24. 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.
Thermosphere
Indicator Species
Nitrification
Speciation
25. A type of symbiosis where one species benefit at the expense of the other.
Parasitism
Air Pollution
Earth Summit
Total Fertility Rate
26. 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.
K-Selected Populations
Tropical Rain Forest
Infiltration
Coniferous Forest
27. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Toxic Substances Control Act
Turbidity
Hydrosphere
Sublimation
28. The process of planting different plant species right next to each other to maximize one's yield.
Biogeochemical Cycle
Interplanting
Snowmelt
Australopithecus Afarensis
29. Growing only one crop at a time.
Trophic Level
Gross Primary Product
Monoculture
Condensation
30. An act which protects certain lands as national parks.
Evaporation
Organism
Grasslands
Wilderness Act
31. 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.
Monoculture
Interception
Temperate Rain Forest
Deserts
32. The rate at which producers create organic material.
Gross Primary Product
Intensive Subsistence Farming
Silent Spring
Superfund Law
33. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Savannah
Evapotranspiration
Sublimation
Neanderthals
34. A transitional area between two different ecosystems.
Social Ecology
Safe Drinking Water Act
Ecotone
Brackish Water
35. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Copiotrophs
Organism
Tropical Rain Forest
Polyculture
36. 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.
Homo Sapiens
Community
Toxic Substances Control Act
Hydrologic Cycle
37. Organisms which eat other organisms.
Troposphere
Consumers
Evapotranspiration
Subsurface flow
38. A community of similar living organisms largely affected by the area's climate.
Agroforestry
Intensive Subsistence Farming
Biomes
Neanderthals
39. Surface run-off caused by melted snow.
Coniferous Forest
Snowmelt
Condensation
Chaparral
40. A group of similar organisms capable of interbreeding.
Hydrosphere
Parasitism
Species
Savannah
41. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Hydrologic Cycle
Australopithecus Afarensis
Nitrous Oxide
Biomes
42. Any living thing on earth.
Hetrotrophs
Organism
Lithosphere
Stratosphere
43. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Coevolution
Non-government Organizations
Ammonification
Omnivores
44. The conversion of nitrates into nitrogen gas.
R-Selected Populations
Denitrification
Wilderness Act
Omnivores
45. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.
Ozone
Evaporation
Transpiration
Biodiversity
46. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Homo Habilis
Consumers
Producers
Tundra
47. A layer of gasses surrounding the earth.
Atmosphere
Wilderness Act
Interception
National Environmental Policy Act
48. The amount of pests needed before spraying pesticides is economical.
Superfund Law
Agroforestry
Economic Threshold
Producers
49. An act which set standards for the amount of pollution in water.
Water Pollution Control Act
Coevolution
Ecotone
Denitrification
50. An international convention which created the framework for protecting the ozone layer.
Thermosphere
Vienna Convention for the Protection of the Ozone Layer
Biogeochemical Cycle
Community