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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 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.
Nitrification
Temperate Rain Forest
Eutrophication
Trophic Level
2. Different species living in close contact with each other.
Carbon Dioxide
Biomes
Grasslands
Symbiosis
3. An international organization designed to promote free trade between countries.
Troposphere
World Trade Organization
Deserts
Wildlife Management
4. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Species
Mesosphere
Savannah
5. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Ecological Niche
Subsistence Farming
Stratosphere
Detrivores
6. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Omnivores
Social Ecology
Exosphere
Infiltration
7. Consumers which eat only other animals.
Sahelanthropus Tchadensis
Superfund Law
Nitrogen Fixation
Carnivores
8. Organisms which consume autotrophs for food.
Hetrotrophs
Resource Partitioning
Nitrogen Fixation
Mesosphere
9. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
World Trade Organization
Hydrosphere
Ammonification
Biogeochemical Cycle
10. Consumers which eat both plants and animals.
Precipitation
Browsers
Tundra
Omnivores
11. Political organizations not affiliated with the government which try to bring about social change.
Ecotone
Consumers
Symbiosis
Non-government Organizations
12. The process of planting different plant species right next to each other to maximize one's yield.
Superfund Law
Biomes
Alley Cropping
Interplanting
13. 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.
Eutrophication
Homo Erectus
Ecology
Producers
14. Consumers which eat decomposing organic material.
Intensive Subsistence Farming
Air Pollution
Superfund Law
Detrivores
15. Organisms which eat other organisms.
Eutrophication
Consumers
Denitrification
Deciduous Forest
16. The uppermost atmospheric layer. Here satellites orbit the earth.
Hetrotrophs
Community
Exosphere
Biomes
17. The process of a gas transforming into a liquid.
Condensation
World Trade Organization
Non-government Organizations
Homo Sapiens
18. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Grasslands
Biodiversity
Keystone Species
Speciation
19. The coexistence of two species using the same resource where the two will use the resource in different ways.
Interplanting
Indicator Species
Resource Partitioning
Aldo Leopold
20. All of the ecosystems on earth.
Thermosphere
Non-government Organizations
Biosphere
Intensive Subsistence Farming
21. All members of a species which live in the same area.
Tropical Rain Forest
Deserts
Turbidity
Population
22. The loss of water vapor from leaves.
Superfund Law
Transpiration
Homo Erectus
Keystone Species
23. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Earth Summit
Subsistence Farming
Oligotrophs
Vienna Convention for the Protection of the Ozone Layer
24. Animals which eat grass and roots.
Acid Rain
Agroforestry
Sahelanthropus Tchadensis
Grazers
25. 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.
Condensation
Thermosphere
Eukaryotes
Acid Rain
26. The conversion of nitrates into nitrogen gas.
Cosmetic Spraying
Denitrification
Economic Threshold
Homo Sapiens
27. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Ecology
World Trade Organization
Evapotranspiration
Advection
28. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Deciduous Forest
Chaparral
Air Pollution
Eukaryotes
29. Organisms which produce their own food.
Grasslands
Autotrophs
Antarctica
Australopithecus Afarensis
30. A greenhouse gas which also plays a key role in regulating ozone levels.
Hydrosphere
Biodiversity
Subsurface flow
Nitrous Oxide
31. The position of an organism on the food chain.
Competitive Exclusion
K-Selected Populations
National Environmental Policy Act
Trophic Level
32. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Homo Habilis
Ecology
Environmental Protection Agency
Nitrous Oxide
33. Average expected birth rate for 1 -000 women.
Total Fertility Rate
Surface Run-Off
Exosphere
Grazers
34. A group of similar organisms capable of interbreeding.
Species
Social Ecology
Precipitation
Hydrosphere
35. 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.
Sahelanthropus Tchadensis
Subsurface flow
Deserts
Hydrologic Cycle
36. A community of species interacting with their nonliving (abiotic) environment.
Nitrogen Fixation
Ozone
UN Conference on Population and Development
Ecosystem
37. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Agroforestry
Aldo Leopold
Subsistence Farming
Clean Air Act
38. A community of similar living organisms largely affected by the area's climate.
Biomes
Ammonification
Producers
Detrivores
39. 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.
Ammonification
Homo Erectus
Ozone
Infiltration
40. 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.
Troposphere
Intensive Subsistence Farming
Acid Rain
Eukaryotes
41. An act created to protect endangered and threatened species.
Producers
Chaparral
Exosphere
Endangered Species Act
42. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Subsistence Farming
Neanderthals
Gross Primary Product
Clean Air Act
43. The amount of pests needed before spraying pesticides is economical.
Economic Threshold
Savannah
Water Pollution Control Act
Biogeochemical Cycle
44. 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.
Interception
Hydrologic Cycle
Silent Spring
Ecosystem
45. Populations characterized by large size - long lifespan - and few offspring.
Temperature Inversion
Insurance Spraying
Organism
K-Selected Populations
46. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Grazers
Savannah
Non-government Organizations
Autotrophs
47. The study of the interaction between organisms and their environment.
Commensalism
Coevolution
Cosmetic Spraying
Ecology
48. Surface run-off caused by melted snow.
Hydrologic Cycle
Snowmelt
Indicator Species
Environmental Ethics
49. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Economic Threshold
Infiltration
Temperature Inversion
Wilderness Act
50. The spraying of pesticides to keep produce from any injuries or damage.
Species
Lithosphere
Harmful Algal Bloom
Cosmetic Spraying