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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 oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Ecology
Nitrification
Tropopause
Shifting Agriculture
2. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Atmosphere
Oligotrophs
Precipitation
Indicator Species
3. 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.
Gross Primary Product
Carbon Dioxide
Species
Transpiration
4. 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.
Symbiosis
Superfund Law
Total Fertility Rate
Tropical Rain Forest
5. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Condensation
Economic Threshold
Taiga
Oligotrophs
6. 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.
Trophic Level
Coniferous Forest
Browsers
Biodiversity
7. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Superfund Law
Hydrologic Cycle
Cosmetic Spraying
8. An act requiring federal agencies to detail the impact of proposed environmental policies.
Temperature Inversion
Infiltration
Ecotone
National Environmental Policy Act
9. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Australopithecus Afarensis
Shifting Agriculture
Tropopause
Harmful Algal Bloom
10. Average expected birth rate for 1 -000 women.
Antarctica
Community
Total Fertility Rate
Monoculture
11. 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
Subsurface flow
Air Pollution
Omnivores
Grazers
12. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Detrivores
Brackish Water
Polyculture
Shifting Agriculture
13. Consumers which eat only other animals.
Carnivores
Population
Lithosphere
R-Selected Populations
14. The process by which pollutants are carried by flowing water - such as a river.
Kyoto Protocol
Homo Sapiens
Ecological Niche
Advection
15. A UN conference that addressed the growing population problem.
Earth Summit
Lithosphere
UN Conference on Population and Development
Total Fertility Rate
16. A philosophy that extends ethics to non-humans. Under this system - animals - plants - and other aspects of the environment are seen as being deserving of justice and consideration.
Precipitation
Interception
Environmental Ethics
Turbidity
17. 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.
Tropical Rain Forest
Copiotrophs
Wildlife Management
Homo Habilis
18. Growing more than one crop at a time.
Infiltration
Polyculture
Harmful Algal Bloom
Nitrification
19. 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
World Trade Organization
Mutualism
Sahelanthropus Tchadensis
20. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Omnivores
Resource Partitioning
Nitrogen Fixation
Antarctica
21. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Evaporation
Clean Air Act
Biogeochemical Cycle
Snowmelt
22. The amount of pests needed before spraying pesticides is economical.
Social Ecology
Methane
Economic Threshold
Ozone
23. The spraying of pesticides to keep produce from any injuries or damage.
Non-government Organizations
Temperature Inversion
Cosmetic Spraying
Biomes
24. 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.
Deserts
Carbon Dioxide
Air Pollution
Hydrologic Cycle
25. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Coevolution
Stratosphere
Water Pollution Control Act
Sublimation
26. All of the ecosystems on earth.
Social Ecology
Biosphere
Symbiosis
Economic Threshold
27. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Nitrification
Total Fertility Rate
Atmosphere
Evapotranspiration
28. Animals which eat grass and roots.
Hetrotrophs
Interception
Denitrification
Grazers
29. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Hydrosphere
Savannah
Cosmetic Spraying
Ecological Niche
30. The coexistence of two species using the same resource where the two will use the resource in different ways.
Temperature Inversion
Neanderthals
Mesosphere
Resource Partitioning
31. Populations characterized by large size - long lifespan - and few offspring.
Economic Threshold
K-Selected Populations
Sublimation
Clean Air Act
32. Forests found in the northern regions of North America - Europe - and Asia characterized by freezing winters and warmer summers. These forests lie just below the tree line.
Tundra
Prokaryotes
Taiga
Troposphere
33. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Evapotranspiration
R-Selected Populations
Temperature Inversion
Precipitation
34. A transitional area between two different ecosystems.
Ecotone
Antarctica
Savannah
Mutualism
35. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Homo Erectus
Safe Drinking Water Act
Methane
Exosphere
36. A greenhouse gas which also plays a key role in regulating ozone levels.
Polyculture
Nitrous Oxide
Species
Infiltration
37. The spraying of pesticides to prevent a pest problem before it happens.
Carbon Dioxide
Insurance Spraying
Speciation
Evaporation
38. The crust and upper mantle of the earth.
Vienna Convention for the Protection of the Ozone Layer
Oligotrophs
Lithosphere
Savannah
39. The process of planting trees in between other crops.
Interception
Homo Habilis
Water Pollution Control Act
Alley Cropping
40. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Wilderness Act
Temperate Rain Forest
K-Selected Populations
Tundra
41. 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
UN Conference on Population and Development
Antarctica
Deserts
Toxic Substances Control Act
42. Organisms which consume autotrophs for food.
Grazers
Interception
Wilderness Act
Hetrotrophs
43. The flow of water in the water table.
Snowmelt
Subsurface flow
Sublimation
Earth Summit
44. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Omnivores
Agroforestry
Total Fertility Rate
Ecosystem
45. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Transpiration
Homo Habilis
Detrivores
Clean Air Act
46. An act which protects certain lands as national parks.
Lithosphere
Wilderness Act
Biodiversity
Condensation
47. A community of species interacting with their nonliving (abiotic) environment.
Ecosystem
Lithosphere
Subsurface flow
Nitrous Oxide
48. Populations characterized by small size - short lifespan - and lots of offspring.
Non-government Organizations
Autotrophs
R-Selected Populations
Population
49. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Neanderthals
Environmental Protection Agency
Homo Erectus
Earth Summit
50. An international protocol designed to stabilize global warming.
Gross Primary Product
Ecotone
Kyoto Protocol
Symbiosis