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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. An extinct hominid species believed to be the last common ancestor between man and apes.
Sahelanthropus Tchadensis
Grasslands
Keystone Species
Mutualism
2. An act which established and enforced acceptable levels of air pollution.
Ozone
Clean Air Act
Grazers
Subsistence Farming
3. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Nitrous Oxide
Evaporation
Tundra
Brackish Water
4. Organisms which produce their own food.
Autotrophs
Environmental Ethics
Homo Habilis
Transpiration
5. A type of symbiosis where each species will benefit from interacting with the other.
Subsistence Farming
Temperate Rain Forest
Mutualism
Oligotrophs
6. The uppermost atmospheric layer. Here satellites orbit the earth.
Exosphere
Earth Summit
Stockholm Conference
UN Conference on Population and Development
7. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Air Pollution
Nitrification
Assimilation
Deciduous Forest
8. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Hydrosphere
Neanderthals
Troposphere
Antarctica
9. A UN conference that addressed the growing population problem.
UN Conference on Population and Development
Commensalism
Consumers
Tropical Rain Forest
10. The spraying of pesticides to prevent a pest problem before it happens.
Troposphere
Insurance Spraying
Keystone Species
Non-government Organizations
11. Organisms which create their own food out of inorganic (abiotic) substances.
Shifting Agriculture
Producers
Insurance Spraying
Speciation
12. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Transpiration
Tropopause
Trophic Level
Population
13. The flow of water in the water table.
Subsurface flow
Wilderness Act
Sublimation
Snowmelt
14. 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
Sahelanthropus Tchadensis
Hetrotrophs
Monoculture
15. All of the ecosystems on earth.
Ammonification
Biosphere
Neanderthals
Silent Spring
16. A community of similar living organisms largely affected by the area's climate.
Biomes
Temperature Inversion
Taiga
Social Ecology
17. A partially enclosed part of the ocean with rivers or streams flowing into it.
Ecotone
Non-government Organizations
Estuary
Coniferous Forest
18. The study of the interaction between organisms and their environment.
Ecology
Parasitism
Monoculture
Estuary
19. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
K-Selected Populations
Aldo Leopold
Chaparral
Nitrous Oxide
20. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Hydrosphere
Water Pollution Control Act
Nitrous Oxide
Infiltration
21. Growing more than one crop at a time.
Polyculture
Temperature Inversion
Chaparral
Water Pollution Control Act
22. The cloudiness of a liquid due to small suspended particles.
Infiltration
Economic Threshold
Turbidity
Water Pollution Control Act
23. The process of a gas transforming into a liquid.
Speciation
Condensation
Species
Interplanting
24. Surface run-off caused by melted snow.
Homo Sapiens
Snowmelt
Taiga
Carbon Dioxide
25. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Nitrogen Fixation
Temperature Inversion
Deciduous Forest
Ecological Niche
26. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Ecology
Homo Habilis
Population
Ammonification
27. 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.
Prokaryotes
Sublimation
Precipitation
Homo Erectus
28. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.
Evaporation
Agroforestry
Toxic Substances Control Act
Monoculture
29. An act which protects certain lands as national parks.
Clean Air Act
Condensation
Safe Drinking Water Act
Wilderness Act
30. Growing only one crop at a time.
Earth Summit
Alley Cropping
Surface Run-Off
Monoculture
31. 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
Sahelanthropus Tchadensis
Antarctica
Polyculture
Earth Summit
32. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Surface Run-Off
Environmental Ethics
Stratosphere
Tundra
33. 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.
Carbon Dioxide
Social Ecology
Subsurface flow
Symbiosis
34. 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.
Non-government Organizations
Temperate Rain Forest
Eukaryotes
Speciation
35. A greenhouse gas which also plays a key role in regulating ozone levels.
Nitrous Oxide
Stockholm Conference
Alley Cropping
Eukaryotes
36. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Keystone Species
Subsurface flow
Ozone
Australopithecus Afarensis
37. The coexistence of two species using the same resource where the two will use the resource in different ways.
Resource Partitioning
Troposphere
Condensation
Monoculture
38. Populations characterized by large size - long lifespan - and few offspring.
Producers
Tundra
K-Selected Populations
Hydrologic Cycle
39. An influential book by Rachel Carson which helped begin the environmental movement.
Competitive Exclusion
Eutrophication
Deciduous Forest
Silent Spring
40. A theory that our current ecological problems are a product of deeper social problems.
Biodiversity
Acid Rain
Social Ecology
Biosphere
41. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Superfund Law
Interplanting
Methane
Eutrophication
42. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Earth Summit
Snowmelt
Polyculture
Organism
43. Consumers which eat both plants and animals.
Mutualism
Wildlife Management
Ozone
Omnivores
44. 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.
Alley Cropping
Acid Rain
Vienna Convention for the Protection of the Ozone Layer
Kyoto Protocol
45. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Tropopause
Homo Habilis
Keystone Species
Detrivores
46. Populations characterized by small size - short lifespan - and lots of offspring.
Evapotranspiration
Montreal Protocol
Gross Primary Product
R-Selected Populations
47. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Commensalism
Keystone Species
Ecological Niche
Mutualism
48. Modern man.
Neanderthals
Eukaryotes
Mutualism
Homo Sapiens
49. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Estuary
Biosphere
Chaparral
Troposphere
50. The rate at which producers create organic material.
Environmental Ethics
Gross Primary Product
Grasslands
Lithosphere