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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. 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
Wildlife Management
Organism
Antarctica
Assimilation
2. A greenhouse gas which also plays a key role in regulating ozone levels.
Keystone Species
Nitrous Oxide
Environmental Protection Agency
Copiotrophs
3. Consumers which eat decomposing organic material.
Detrivores
Clean Air Act
Deciduous Forest
Insurance Spraying
4. 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.
Nitrification
Vienna Convention for the Protection of the Ozone Layer
Chaparral
Acid Rain
5. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Biodiversity
Thermosphere
Competitive Exclusion
Tundra
6. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Species
Ammonification
Aldo Leopold
Nitrification
7. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Homo Habilis
Condensation
Vienna Convention for the Protection of the Ozone Layer
Subsistence Farming
8. A community of species interacting with their nonliving (abiotic) environment.
Stockholm Conference
Ecosystem
Taiga
Agroforestry
9. 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
Subsurface flow
K-Selected Populations
UN Conference on Population and Development
10. The cloudiness of a liquid due to small suspended particles.
Environmental Ethics
Turbidity
Shifting Agriculture
Australopithecus Afarensis
11. 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
Browsers
Turbidity
Copiotrophs
12. A theory that our current ecological problems are a product of deeper social problems.
Monoculture
Homo Erectus
Assimilation
Social Ecology
13. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Total Fertility Rate
Biodiversity
Ecological Niche
Hetrotrophs
14. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Silent Spring
Temperature Inversion
Toxic Substances Control Act
Precipitation
15. Different species living in close contact with each other.
Symbiosis
Carbon Dioxide
Detrivores
Snowmelt
16. Any living thing on earth.
Clean Air Act
Organism
Nitrification
Detrivores
17. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Savannah
Social Ecology
Brackish Water
Temperate Rain Forest
18. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Ecosystem
World Trade Organization
Homo Habilis
19. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Copiotrophs
Silent Spring
Montreal Protocol
Nitrification
20. The flow of water in the water table.
Subsurface flow
Agroforestry
Wilderness Act
Autotrophs
21. 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
Air Pollution
Species
Carbon Dioxide
Water Pollution Control Act
22. An act requiring federal agencies to detail the impact of proposed environmental policies.
Producers
Condensation
National Environmental Policy Act
Earth Summit
23. The process of planting trees in between other crops.
Social Ecology
Alley Cropping
Deciduous Forest
Nitrification
24. A rainforest in the temperate zone which receives heavy rainfall.
Tropopause
Wildlife Management
Gross Primary Product
Temperate Rain Forest
25. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Surface Run-Off
Nitrification
Homo Habilis
Exosphere
26. An act which required the EPA to set standards for drinking water.
Non-government Organizations
Safe Drinking Water Act
Eukaryotes
Evaporation
27. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Total Fertility Rate
Temperature Inversion
Omnivores
Nitrification
28. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Temperature Inversion
Intensive Subsistence Farming
Population
Ammonification
29. Single-celled organisms which lack a nucleus.
Prokaryotes
Organism
Environmental Protection Agency
Grasslands
30. The study of the interaction between organisms and their environment.
Interplanting
Taiga
Competitive Exclusion
Ecology
31. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Transpiration
Detrivores
Aldo Leopold
Methane
32. A layer of gasses surrounding the earth.
Economic Threshold
Atmosphere
Subsurface flow
Surface Run-Off
33. A forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.
Earth Summit
Lithosphere
Biogeochemical Cycle
Coniferous Forest
34. A type of symbiosis where one species benefit at the expense of the other.
Ozone
Parasitism
Infiltration
Thermosphere
35. 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.
Shifting Agriculture
Social Ecology
Biodiversity
Turbidity
36. A transitional area between two different ecosystems.
Ecotone
Water Pollution Control Act
Estuary
Detrivores
37. 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.
Homo Erectus
Evaporation
Homo Sapiens
Ozone
38. The amount of pests needed before spraying pesticides is economical.
Community
Temperature Inversion
Economic Threshold
Ozone
39. The loss of water vapor from leaves.
Ecology
Transpiration
Lithosphere
Commensalism
40. The process of a gas transforming into a liquid.
Non-government Organizations
Deserts
Turbidity
Condensation
41. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Tropopause
Mutualism
Biogeochemical Cycle
Ecological Niche
42. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Toxic Substances Control Act
Carnivores
UN Conference on Population and Development
Homo Habilis
43. All of the ecosystems on earth.
Surface Run-Off
Biosphere
National Environmental Policy Act
Acid Rain
44. A type of symbiosis where each species will benefit from interacting with the other.
Mutualism
Condensation
Indicator Species
Intensive Subsistence Farming
45. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Social Ecology
Brackish Water
Trophic Level
Montreal Protocol
46. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Estuary
Alley Cropping
Harmful Algal Bloom
Copiotrophs
47. Populations characterized by small size - short lifespan - and lots of offspring.
Thermosphere
Surface Run-Off
R-Selected Populations
Methane
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.
Homo Sapiens
Air Pollution
Intensive Subsistence Farming
Browsers
49. An act which established and enforced acceptable levels of air pollution.
World Trade Organization
Clean Air Act
Mutualism
Wilderness Act
50. Organisms which consume autotrophs for food.
Evapotranspiration
Sublimation
Omnivores
Hetrotrophs