SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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 type of symbiosis where one species benefit at the expense of the other.
Grasslands
Subsistence Farming
Parasitism
Deciduous Forest
2. 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.
Community
Wildlife Management
Acid Rain
Savannah
3. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Subsistence Farming
Stratosphere
Acid Rain
Economic Threshold
4. Plants taking in nitrates from the soil.
Tundra
Assimilation
Copiotrophs
Neanderthals
5. An act which required the EPA to set standards for drinking water.
Tundra
Safe Drinking Water Act
Nitrification
Evapotranspiration
6. 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.
Estuary
Temperature Inversion
Taiga
Ammonification
7. 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
Advection
Antarctica
Biodiversity
Atmosphere
8. A layer of gasses surrounding the earth.
Oligotrophs
Population
Endangered Species Act
Atmosphere
9. 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.
Turbidity
Superfund Law
Intensive Subsistence Farming
Deciduous Forest
10. An act created to protect endangered and threatened species.
Endangered Species Act
Ecosystem
Trophic Level
Hydrologic Cycle
11. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Gross Primary Product
Nitrification
Nitrogen Fixation
Copiotrophs
12. The flow of water in the water table.
Subsurface flow
Total Fertility Rate
Taiga
Grasslands
13. An extinct hominid species believed to be the last common ancestor between man and apes.
Homo Sapiens
Denitrification
Clean Air Act
Sahelanthropus Tchadensis
14. An influential book by Rachel Carson which helped begin the environmental movement.
Antarctica
Silent Spring
Interplanting
Savannah
15. 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.
Autotrophs
Atmosphere
Homo Erectus
Troposphere
16. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Interception
Oligotrophs
Antarctica
Consumers
17. An international organization designed to promote free trade between countries.
Deserts
Snowmelt
World Trade Organization
Endangered Species Act
18. Any living thing on earth.
Nitrification
Ecosystem
Organism
Denitrification
19. The spraying of pesticides to prevent a pest problem before it happens.
Wildlife Management
Environmental Ethics
Insurance Spraying
Gross Primary Product
20. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Social Ecology
Vienna Convention for the Protection of the Ozone Layer
Savannah
Lithosphere
21. The process by which pollutants are carried by flowing water - such as a river.
Advection
Resource Partitioning
Polyculture
Omnivores
22. 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.
Intensive Subsistence Farming
Biodiversity
Ozone
Vienna Convention for the Protection of the Ozone Layer
23. Modern man.
UN Conference on Population and Development
Ecology
Homo Sapiens
Copiotrophs
24. 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.
Assimilation
Deserts
Insurance Spraying
Shifting Agriculture
25. A community of similar living organisms largely affected by the area's climate.
Non-government Organizations
World Trade Organization
Evaporation
Biomes
26. Organisms with a nucleus.
Harmful Algal Bloom
R-Selected Populations
Eukaryotes
Speciation
27. A variety of species living together.
Biosphere
Community
Biogeochemical Cycle
Wilderness Act
28. A community of species interacting with their nonliving (abiotic) environment.
Advection
Brackish Water
Ecosystem
Subsistence Farming
29. Populations characterized by small size - short lifespan - and lots of offspring.
Aldo Leopold
Vienna Convention for the Protection of the Ozone Layer
Condensation
R-Selected Populations
30. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Denitrification
Toxic Substances Control Act
Economic Threshold
Brackish Water
31. The spraying of pesticides to keep produce from any injuries or damage.
Indicator Species
Alley Cropping
Cosmetic Spraying
Savannah
32. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Stratosphere
Savannah
Methane
Homo Habilis
33. Average expected birth rate for 1 -000 women.
UN Conference on Population and Development
Eukaryotes
Shifting Agriculture
Total Fertility Rate
34. 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.
Polyculture
Non-government Organizations
Environmental Ethics
Symbiosis
35. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Tropopause
Carnivores
Neanderthals
Superfund Law
36. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Grasslands
Tropical Rain Forest
Australopithecus Afarensis
Tropopause
37. 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.
Consumers
Denitrification
Deserts
Endangered Species Act
38. The process by which a new species is created. This process generally requires geographic isolation to prevent interbreeding between the newly emerging species and the parent species.
Coniferous Forest
Antarctica
Shifting Agriculture
Speciation
39. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Ecological Niche
Deciduous Forest
Biodiversity
Detrivores
40. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Intensive Subsistence Farming
Environmental Protection Agency
Clean Air Act
Ecosystem
41. Growing more than one crop at a time.
Homo Habilis
Silent Spring
Polyculture
Resource Partitioning
42. Political organizations not affiliated with the government which try to bring about social change.
Non-government Organizations
Ecosystem
Symbiosis
Stratosphere
43. Growing only one crop at a time.
Producers
Sahelanthropus Tchadensis
Coniferous Forest
Monoculture
44. The UN's first major conference on environmental issues.
Symbiosis
Stockholm Conference
National Environmental Policy Act
Eutrophication
45. A rainforest in the temperate zone which receives heavy rainfall.
Biogeochemical Cycle
Temperate Rain Forest
Keystone Species
K-Selected Populations
46. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Ecological Niche
Symbiosis
Superfund Law
Ammonification
47. 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.
Hetrotrophs
Shifting Agriculture
Cosmetic Spraying
Hydrologic Cycle
48. The process of a gas transforming into a liquid.
Subsistence Farming
Condensation
Methane
Troposphere
49. The cloudiness of a liquid due to small suspended particles.
Indicator Species
Turbidity
Biomes
Population
50. 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.
Biogeochemical Cycle
Eutrophication
Air Pollution
Antarctica