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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. 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.
Transpiration
Competitive Exclusion
Antarctica
Commensalism
2. Consumers which eat only other animals.
Sublimation
Commensalism
Biogeochemical Cycle
Carnivores
3. The rate at which producers create organic material.
Harmful Algal Bloom
Gross Primary Product
Sahelanthropus Tchadensis
Deserts
4. A partially enclosed part of the ocean with rivers or streams flowing into it.
Mutualism
Estuary
Prokaryotes
Detrivores
5. 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
Oligotrophs
Tundra
Air Pollution
Clean Air Act
6. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Oligotrophs
Shifting Agriculture
Hydrosphere
Coniferous Forest
7. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Interception
Australopithecus Afarensis
Economic Threshold
Cosmetic Spraying
8. An extinct hominid species believed to be the last common ancestor between man and apes.
Advection
Sahelanthropus Tchadensis
Acid Rain
Tropopause
9. A greenhouse gas which also plays a key role in regulating ozone levels.
Carnivores
Exosphere
Agroforestry
Nitrous Oxide
10. 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.
Assimilation
Consumers
Taiga
Montreal Protocol
11. The uppermost atmospheric layer. Here satellites orbit the earth.
National Environmental Policy Act
Infiltration
Exosphere
Commensalism
12. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Atmosphere
Brackish Water
Cosmetic Spraying
Biomes
13. The middle atmospheric layer. Meteors burn up after entering this layer.
Mesosphere
Antarctica
Acid Rain
Biogeochemical Cycle
14. 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
Subsistence Farming
Prokaryotes
Vienna Convention for the Protection of the Ozone Layer
15. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Cosmetic Spraying
Grasslands
Copiotrophs
Omnivores
16. A community of species interacting with their nonliving (abiotic) environment.
Alley Cropping
Oligotrophs
Species
Ecosystem
17. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Stratosphere
Biosphere
Sublimation
Environmental Protection Agency
18. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Hydrologic Cycle
Homo Sapiens
Indicator Species
Air Pollution
19. The position of an organism on the food chain.
Insurance Spraying
Tropopause
Trophic Level
Wildlife Management
20. Single-celled organisms which lack a nucleus.
Temperate Rain Forest
Condensation
Environmental Protection Agency
Prokaryotes
21. The coexistence of two species using the same resource where the two will use the resource in different ways.
Snowmelt
Resource Partitioning
Commensalism
Hydrosphere
22. 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.
Homo Sapiens
Chaparral
Deserts
Grazers
23. A transitional area between two different ecosystems.
World Trade Organization
Ecotone
Population
Ecology
24. Animals which eat grass and roots.
Ammonification
Shifting Agriculture
Keystone Species
Grazers
25. Precipitation which does not reach the soil but is instead collected by plants.
Lithosphere
Biosphere
Air Pollution
Interception
26. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Safe Drinking Water Act
Taiga
Tropical Rain Forest
Surface Run-Off
27. 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.
Deserts
Grazers
Infiltration
Hydrologic Cycle
28. An influential book by Rachel Carson which helped begin the environmental movement.
UN Conference on Population and Development
Ecological Niche
Silent Spring
Temperate Rain Forest
29. The process of a gas transforming into a liquid.
Condensation
Tropical Rain Forest
Hydrologic Cycle
Kyoto Protocol
30. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Tropical Rain Forest
Superfund Law
Condensation
Aldo Leopold
31. 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.
Carbon Dioxide
Parasitism
Carnivores
Chaparral
32. A theory that our current ecological problems are a product of deeper social problems.
Surface Run-Off
Silent Spring
Community
Social Ecology
33. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Grasslands
Kyoto Protocol
Environmental Ethics
Commensalism
34. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Species
Hydrosphere
Brackish Water
Sublimation
35. The process of planting trees in between other crops.
Alley Cropping
Harmful Algal Bloom
Carnivores
Symbiosis
36. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Ecological Niche
UN Conference on Population and Development
Coniferous Forest
Wildlife Management
37. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Evapotranspiration
Wilderness Act
Ozone
Troposphere
38. 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.
Estuary
Earth Summit
Ozone
Resource Partitioning
39. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Environmental Protection Agency
Wildlife Management
Hydrosphere
Earth Summit
40. The loss of water vapor from leaves.
Savannah
Cosmetic Spraying
Homo Habilis
Transpiration
41. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Surface Run-Off
Thermosphere
Ecotone
Keystone Species
42. A group of similar organisms capable of interbreeding.
Eukaryotes
Species
Sahelanthropus Tchadensis
Turbidity
43. A layer of gasses surrounding the earth.
Assimilation
Atmosphere
Gross Primary Product
Stockholm Conference
44. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Economic Threshold
Parasitism
Temperature Inversion
Environmental Protection Agency
45. Growing only one crop at a time.
Toxic Substances Control Act
Monoculture
Producers
Grazers
46. Political organizations not affiliated with the government which try to bring about social change.
Taiga
Wilderness Act
Environmental Protection Agency
Non-government Organizations
47. Organisms which create their own food out of inorganic (abiotic) substances.
Clean Air Act
Economic Threshold
Temperature Inversion
Producers
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.
Ecological Niche
Omnivores
Detrivores
Intensive Subsistence Farming
49. The amount of pests needed before spraying pesticides is economical.
National Environmental Policy Act
Advection
Economic Threshold
R-Selected Populations
50. Plants taking in nitrates from the soil.
Resource Partitioning
Assimilation
Evapotranspiration
Environmental Protection Agency