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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 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.
Hetrotrophs
Grazers
Tropical Rain Forest
Ecological Niche
2. A partially enclosed part of the ocean with rivers or streams flowing into it.
Brackish Water
Coevolution
Estuary
Polyculture
3. A rainforest in the temperate zone which receives heavy rainfall.
Temperate Rain Forest
Troposphere
Nitrogen Fixation
Autotrophs
4. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Tundra
Safe Drinking Water Act
Deserts
Evaporation
5. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Commensalism
Temperature Inversion
Stratosphere
Wildlife Management
6. The process by which pollutants are carried by flowing water - such as a river.
Coniferous Forest
Advection
Symbiosis
Prokaryotes
7. An act which set standards for the amount of pollution in water.
Water Pollution Control Act
Tropopause
Subsurface flow
Commensalism
8. 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.
Chaparral
Biodiversity
Temperate Rain Forest
National Environmental Policy Act
9. 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.
Stockholm Conference
Social Ecology
Deserts
Atmosphere
10. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Earth Summit
Trophic Level
Clean Air Act
11. 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.
Organism
Neanderthals
Hetrotrophs
Wildlife Management
12. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Deserts
Australopithecus Afarensis
Earth Summit
Species
13. 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.
Intensive Subsistence Farming
Consumers
Symbiosis
Competitive Exclusion
14. The crust and upper mantle of the earth.
Omnivores
Prokaryotes
Environmental Protection Agency
Lithosphere
15. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Resource Partitioning
Surface Run-Off
Coevolution
Precipitation
16. The cloudiness of a liquid due to small suspended particles.
Shifting Agriculture
Troposphere
Evaporation
Turbidity
17. Animals which eat leaves and shoots.
Copiotrophs
Economic Threshold
Deciduous Forest
Browsers
18. An international organization designed to promote free trade between countries.
Superfund Law
Wildlife Management
World Trade Organization
Eutrophication
19. Precipitation which does not reach the soil but is instead collected by plants.
Interception
Kyoto Protocol
Consumers
Earth Summit
20. Populations characterized by large size - long lifespan - and few offspring.
Methane
Stockholm Conference
Species
K-Selected Populations
21. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Australopithecus Afarensis
Coevolution
Wildlife Management
Speciation
22. An international protocol designed to stabilize global warming.
Interception
Kyoto Protocol
Keystone Species
Tropical Rain Forest
23. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Biodiversity
Water Pollution Control Act
Nitrification
Toxic Substances Control Act
24. The conversion of nitrates into nitrogen gas.
Denitrification
Agroforestry
Eukaryotes
K-Selected Populations
25. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Coniferous Forest
Community
Montreal Protocol
Troposphere
26. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Sublimation
Chaparral
Stockholm Conference
Hydrologic Cycle
27. 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.
Ozone
Vienna Convention for the Protection of the Ozone Layer
Homo Erectus
Organism
28. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.
Estuary
National Environmental Policy Act
Ecosystem
Thermosphere
29. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Hetrotrophs
Homo Erectus
Biodiversity
Grasslands
30. All members of a species which live in the same area.
Kyoto Protocol
Advection
Taiga
Population
31. An act created to protect endangered and threatened species.
Grazers
Methane
Endangered Species Act
Total Fertility Rate
32. The process of planting trees in between other crops.
Assimilation
Symbiosis
Browsers
Alley Cropping
33. 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.
Competitive Exclusion
Grazers
Shifting Agriculture
Coniferous Forest
34. Growing more than one crop at a time.
Evaporation
Polyculture
Prokaryotes
Air Pollution
35. Plants taking in nitrates from the soil.
Detrivores
Browsers
Ozone
Assimilation
36. A layer of gasses surrounding the earth.
Atmosphere
Insurance Spraying
Competitive Exclusion
Homo Sapiens
37. A type of symbiosis where one species benefit at the expense of the other.
Hydrosphere
Environmental Protection Agency
Parasitism
Agroforestry
38. A theory that our current ecological problems are a product of deeper social problems.
Precipitation
Social Ecology
Biogeochemical Cycle
Silent Spring
39. The process of planting different plant species right next to each other to maximize one's yield.
Interplanting
Savannah
Methane
Shifting Agriculture
40. Surface run-off caused by melted snow.
Snowmelt
Montreal Protocol
Species
Ecotone
41. A variety of species living together.
Community
Ecotone
Wilderness Act
Interplanting
42. Any living thing on earth.
Antarctica
Harmful Algal Bloom
Organism
Toxic Substances Control Act
43. A community of similar living organisms largely affected by the area's climate.
Biomes
Interception
Commensalism
Trophic Level
44. A bloom of phytoplankton in a body of water caused by an abnormal increase in nutrients. This process depletes the water's oxygen level - killing off other aquatic organisms.
Eutrophication
Ecological Niche
Copiotrophs
Water Pollution Control Act
45. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Advection
Denitrification
Tropical Rain Forest
Deciduous Forest
46. A type of symbiosis where each species will benefit from interacting with the other.
Mutualism
Coevolution
UN Conference on Population and Development
Alley Cropping
47. An act which required the EPA to set standards for drinking water.
Brackish Water
Estuary
Safe Drinking Water Act
Mesosphere
48. An influential book by Rachel Carson which helped begin the environmental movement.
Air Pollution
Endangered Species Act
Eutrophication
Silent Spring
49. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Assimilation
Grazers
Montreal Protocol
Indicator Species
50. An international convention which created the framework for protecting the ozone layer.
Gross Primary Product
Sublimation
Vienna Convention for the Protection of the Ozone Layer
Shifting Agriculture