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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 process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Sahelanthropus Tchadensis
Community
Subsistence Farming
Sublimation
2. A type of symbiosis where one species benefit at the expense of the other.
Parasitism
Wilderness Act
Homo Habilis
Social Ecology
3. Organisms which produce their own food.
Hetrotrophs
Copiotrophs
Stockholm Conference
Autotrophs
4. An extinct hominid species believed to be the last common ancestor between man and apes.
Sahelanthropus Tchadensis
Total Fertility Rate
Harmful Algal Bloom
Species
5. Single-celled organisms which lack a nucleus.
Air Pollution
Prokaryotes
Temperate Rain Forest
Ozone
6. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Ozone
Organism
Biomes
Environmental Protection Agency
7. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Temperature Inversion
Exosphere
World Trade Organization
Gross Primary Product
8. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Economic Threshold
R-Selected Populations
K-Selected Populations
Biogeochemical Cycle
9. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Commensalism
Savannah
Autotrophs
Producers
10. The process of planting different plant species right next to each other to maximize one's yield.
Parasitism
Interception
Subsurface flow
Interplanting
11. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Grazers
R-Selected Populations
Subsistence Farming
Toxic Substances Control Act
12. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Grazers
Assimilation
Snowmelt
Ammonification
13. A type of symbiosis where each species will benefit from interacting with the other.
Insurance Spraying
Sublimation
Chaparral
Mutualism
14. 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
Intensive Subsistence Farming
Antarctica
Community
Commensalism
15. The spraying of pesticides to keep produce from any injuries or damage.
Exosphere
Nitrification
Cosmetic Spraying
Prokaryotes
16. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Nitrogen Fixation
Toxic Substances Control Act
Brackish Water
Insurance Spraying
17. 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.
Cosmetic Spraying
Estuary
Hydrologic Cycle
UN Conference on Population and Development
18. 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.
Subsurface flow
Economic Threshold
Methane
Ozone
19. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Temperature Inversion
Ecotone
Nitrification
Toxic Substances Control Act
20. Organisms which consume autotrophs for food.
Hetrotrophs
Intensive Subsistence Farming
Interception
Toxic Substances Control Act
21. The flow of water in the water table.
Subsurface flow
Insurance Spraying
Ozone
Carbon Dioxide
22. All of the water found on earth.
Keystone Species
Hydrosphere
Commensalism
Nitrous Oxide
23. A variety of species living together.
Ecotone
Transpiration
Advection
Community
24. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Indicator Species
Economic Threshold
Antarctica
Tropopause
25. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Grazers
Precipitation
Neanderthals
Silent Spring
26. A UN conference that addressed the growing population problem.
UN Conference on Population and Development
Aldo Leopold
Clean Air Act
Precipitation
27. A community of species interacting with their nonliving (abiotic) environment.
Agroforestry
Ecosystem
Coniferous Forest
Consumers
28. Surface run-off caused by melted snow.
Superfund Law
Snowmelt
Organism
Sahelanthropus Tchadensis
29. 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.
Australopithecus Afarensis
Competitive Exclusion
Evaporation
Ozone
30. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Coniferous Forest
Infiltration
Nitrogen Fixation
Interplanting
31. Modern man.
Kyoto Protocol
Endangered Species Act
Homo Sapiens
Methane
32. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Community
Oligotrophs
Autotrophs
Stockholm Conference
33. Average expected birth rate for 1 -000 women.
Wilderness Act
Air Pollution
Community
Total Fertility Rate
34. Organisms which eat other organisms.
Consumers
Air Pollution
Silent Spring
Montreal Protocol
35. 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.
Coniferous Forest
Evaporation
Assimilation
Prokaryotes
36. Plants taking in nitrates from the soil.
World Trade Organization
Denitrification
Snowmelt
Assimilation
37. 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
Assimilation
Ozone
Earth Summit
38. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Polyculture
Thermosphere
Evapotranspiration
Species
39. The crust and upper mantle of the earth.
Ecosystem
Tropopause
Lithosphere
Neanderthals
40. The coexistence of two species using the same resource where the two will use the resource in different ways.
Snowmelt
Hydrologic Cycle
Subsistence Farming
Resource Partitioning
41. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Evapotranspiration
Methane
Antarctica
Keystone Species
42. 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.
Ecological Niche
Carbon Dioxide
Acid Rain
Nitrification
43. The spraying of pesticides to prevent a pest problem before it happens.
Endangered Species Act
Carbon Dioxide
Indicator Species
Insurance Spraying
44. The position of an organism on the food chain.
Browsers
Trophic Level
Homo Sapiens
Environmental Protection Agency
45. Animals which eat grass and roots.
Keystone Species
Aldo Leopold
Grazers
Eukaryotes
46. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.
Exosphere
Non-government Organizations
Stratosphere
Agroforestry
47. An act requiring federal agencies to detail the impact of proposed environmental policies.
Ecological Niche
Species
National Environmental Policy Act
Polyculture
48. Animals which eat leaves and shoots.
Safe Drinking Water Act
Gross Primary Product
Thermosphere
Browsers
49. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Grazers
Surface Run-Off
Aldo Leopold
Producers
50. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Montreal Protocol
Estuary
Hetrotrophs
World Trade Organization