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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. Political organizations not affiliated with the government which try to bring about social change.
Neanderthals
Coniferous Forest
Safe Drinking Water Act
Non-government Organizations
2. 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.
Evaporation
Shifting Agriculture
Atmosphere
Biodiversity
3. 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
Trophic Level
Polyculture
Ecological Niche
4. 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.
Hetrotrophs
Atmosphere
Wildlife Management
Biosphere
5. 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.
Competitive Exclusion
Consumers
Chaparral
Ecology
6. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Organism
Non-government Organizations
Evaporation
Oligotrophs
7. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Surface Run-Off
Ammonification
Keystone Species
National Environmental Policy Act
8. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Montreal Protocol
Condensation
Organism
Ecological Niche
9. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Superfund Law
Tropopause
Temperature Inversion
Biomes
10. Organisms with a nucleus.
Savannah
Precipitation
Wildlife Management
Eukaryotes
11. An act created to protect endangered and threatened species.
Safe Drinking Water Act
Transpiration
Hetrotrophs
Endangered Species Act
12. Average expected birth rate for 1 -000 women.
Endangered Species Act
Hetrotrophs
Total Fertility Rate
Savannah
13. The loss of water vapor from leaves.
Air Pollution
Ammonification
Transpiration
Parasitism
14. Precipitation which does not reach the soil but is instead collected by plants.
Biomes
Montreal Protocol
Eukaryotes
Interception
15. An act which required the EPA to set standards for drinking water.
Safe Drinking Water Act
Hydrosphere
Sublimation
Gross Primary Product
16. 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.
Tropopause
K-Selected Populations
Eutrophication
Social Ecology
17. A partially enclosed part of the ocean with rivers or streams flowing into it.
Estuary
Biosphere
Exosphere
Polyculture
18. Any living thing on earth.
Organism
Interception
Homo Habilis
Biosphere
19. A group of similar organisms capable of interbreeding.
Sahelanthropus Tchadensis
Species
Methane
Toxic Substances Control Act
20. A type of farming where the farmer will fell and burn down trees to grow crops. After a few years - he will move on and continue the process.
Shifting Agriculture
Homo Erectus
Homo Sapiens
Insurance Spraying
21. A community of species interacting with their nonliving (abiotic) environment.
Taiga
Ecosystem
Competitive Exclusion
Superfund Law
22. All of the ecosystems on earth.
Biosphere
R-Selected Populations
Alley Cropping
Mutualism
23. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Endangered Species Act
Biogeochemical Cycle
Biomes
Australopithecus Afarensis
24. The spraying of pesticides to prevent a pest problem before it happens.
Wildlife Management
Evapotranspiration
Insurance Spraying
K-Selected Populations
25. 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.
Taiga
Neanderthals
Non-government Organizations
Temperate Rain Forest
26. The cloudiness of a liquid due to small suspended particles.
Eutrophication
Trophic Level
Turbidity
Economic Threshold
27. An extinct hominid species believed to be the last common ancestor between man and apes.
Superfund Law
Sahelanthropus Tchadensis
Ecology
Thermosphere
28. Populations characterized by small size - short lifespan - and lots of offspring.
Antarctica
Ammonification
R-Selected Populations
Methane
29. The conversion of nitrates into nitrogen gas.
Intensive Subsistence Farming
Omnivores
Denitrification
Deserts
30. The process of planting different plant species right next to each other to maximize one's yield.
R-Selected Populations
Interplanting
Environmental Protection Agency
Mutualism
31. An act which established and enforced acceptable levels of air pollution.
Stratosphere
Homo Sapiens
Clean Air Act
Environmental Ethics
32. Animals which eat grass and roots.
Grazers
Stockholm Conference
Wildlife Management
Intensive Subsistence Farming
33. The coexistence of two species using the same resource where the two will use the resource in different ways.
Resource Partitioning
Subsurface flow
Intensive Subsistence Farming
Brackish Water
34. 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
UN Conference on Population and Development
Homo Habilis
Temperature Inversion
35. All of the water found on earth.
Vienna Convention for the Protection of the Ozone Layer
Ammonification
Stockholm Conference
Hydrosphere
36. A rainforest in the temperate zone which receives heavy rainfall.
Keystone Species
Sublimation
Cosmetic Spraying
Temperate Rain Forest
37. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
UN Conference on Population and Development
Tundra
Hydrologic Cycle
Turbidity
38. Growing only one crop at a time.
Surface Run-Off
Monoculture
Taiga
Estuary
39. Different species living in close contact with each other.
Prokaryotes
Hetrotrophs
Carbon Dioxide
Symbiosis
40. Organisms which eat other organisms.
Consumers
Precipitation
Homo Sapiens
Clean Air Act
41. A greenhouse gas which also plays a key role in regulating ozone levels.
Environmental Ethics
R-Selected Populations
Estuary
Nitrous Oxide
42. 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.
Safe Drinking Water Act
UN Conference on Population and Development
Competitive Exclusion
Insurance Spraying
43. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Nitrogen Fixation
Consumers
Trophic Level
Environmental Protection Agency
44. Animals which eat leaves and shoots.
Browsers
Advection
Stratosphere
Grazers
45. The middle atmospheric layer. Meteors burn up after entering this layer.
Trophic Level
Mesosphere
Ozone
Insurance Spraying
46. A theory that our current ecological problems are a product of deeper social problems.
Shifting Agriculture
Polyculture
Social Ecology
Transpiration
47. All members of a species which live in the same area.
Population
Toxic Substances Control Act
Speciation
Environmental Protection Agency
48. Consumers which eat decomposing organic material.
Endangered Species Act
Thermosphere
Detrivores
Biogeochemical Cycle
49. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Mesosphere
Kyoto Protocol
Superfund Law
Transpiration
50. A UN conference that addressed the growing population problem.
UN Conference on Population and Development
Water Pollution Control Act
Shifting Agriculture
Indicator Species