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. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Copiotrophs
Earth Summit
Hydrologic Cycle
Alley Cropping
2. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Snowmelt
Ammonification
Montreal Protocol
Nitrification
3. A layer of gasses surrounding the earth.
Evaporation
Turbidity
World Trade Organization
Atmosphere
4. The spraying of pesticides to keep produce from any injuries or damage.
Savannah
Earth Summit
Indicator Species
Cosmetic Spraying
5. The rate at which producers create organic material.
Eutrophication
Advection
Taiga
Gross Primary Product
6. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Mutualism
Troposphere
UN Conference on Population and Development
Australopithecus Afarensis
7. Any living thing on earth.
Homo Habilis
Organism
Resource Partitioning
Biodiversity
8. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Speciation
Snowmelt
Biogeochemical Cycle
Gross Primary Product
9. Single-celled organisms which lack a nucleus.
Mutualism
Harmful Algal Bloom
Producers
Prokaryotes
10. Consumers which eat only other animals.
Advection
Parasitism
Evapotranspiration
Carnivores
11. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Subsistence Farming
Total Fertility Rate
Evaporation
Surface Run-Off
12. The uppermost atmospheric layer. Here satellites orbit the earth.
Snowmelt
Temperature Inversion
Hydrologic Cycle
Exosphere
13. 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.
Carbon Dioxide
Homo Erectus
Cosmetic Spraying
Exosphere
14. 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.
Temperate Rain Forest
Montreal Protocol
Carbon Dioxide
Shifting Agriculture
15. Organisms which create their own food out of inorganic (abiotic) substances.
Endangered Species Act
Producers
Water Pollution Control Act
Brackish Water
16. Political organizations not affiliated with the government which try to bring about social change.
Thermosphere
Non-government Organizations
Homo Sapiens
Harmful Algal Bloom
17. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Aldo Leopold
Deciduous Forest
Montreal Protocol
Troposphere
18. The coexistence of two species using the same resource where the two will use the resource in different ways.
Prokaryotes
Deciduous Forest
Homo Erectus
Resource Partitioning
19. Growing more than one crop at a time.
Temperate Rain Forest
Lithosphere
Brackish Water
Polyculture
20. The process of planting trees in between other crops.
Grasslands
Alley Cropping
Water Pollution Control Act
Endangered Species Act
21. The middle atmospheric layer. Meteors burn up after entering this layer.
Hydrosphere
Mesosphere
Atmosphere
Nitrous Oxide
22. An international organization designed to promote free trade between countries.
Precipitation
Nitrification
Stratosphere
World Trade Organization
23. The cloudiness of a liquid due to small suspended particles.
Parasitism
Total Fertility Rate
Ecosystem
Turbidity
24. Organisms which consume autotrophs for food.
Polyculture
Hetrotrophs
Population
Subsurface flow
25. Precipitation which does not reach the soil but is instead collected by plants.
Gross Primary Product
Environmental Protection Agency
Denitrification
Interception
26. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Snowmelt
Commensalism
Infiltration
Denitrification
27. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Sahelanthropus Tchadensis
Montreal Protocol
Agroforestry
Mutualism
28. Average expected birth rate for 1 -000 women.
Community
Precipitation
Total Fertility Rate
Mesosphere
29. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Sahelanthropus Tchadensis
Chaparral
Oligotrophs
Homo Habilis
30. Growing only one crop at a time.
Eukaryotes
Monoculture
Population
Temperature Inversion
31. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Aldo Leopold
Polyculture
Wilderness Act
Mutualism
32. An act which established and enforced acceptable levels of air pollution.
Species
Hydrologic Cycle
Clean Air Act
Carbon Dioxide
33. The rapid increase of harmful algae in a body of water.
Biogeochemical Cycle
Taiga
Eukaryotes
Harmful Algal Bloom
34. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Acid Rain
Toxic Substances Control Act
Shifting Agriculture
Grasslands
35. The process by which pollutants are carried by flowing water - such as a river.
Gross Primary Product
Homo Erectus
K-Selected Populations
Advection
36. An influential book by Rachel Carson which helped begin the environmental movement.
Social Ecology
Grazers
Silent Spring
Acid Rain
37. An international convention which created the framework for protecting the ozone layer.
Vienna Convention for the Protection of the Ozone Layer
Grazers
Carbon Dioxide
Nitrogen Fixation
38. All of the water found on earth.
Hydrosphere
Hetrotrophs
K-Selected Populations
Homo Habilis
39. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Alley Cropping
Symbiosis
Intensive Subsistence Farming
Tundra
40. Surface run-off caused by melted snow.
Hetrotrophs
Aldo Leopold
Snowmelt
Atmosphere
41. Evolution in one organism due to change in a related organism.
Coevolution
Oligotrophs
Advection
Species
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.
Mutualism
Homo Habilis
National Environmental Policy Act
Trophic Level
43. An extinct hominid species believed to be the last common ancestor between man and apes.
Tundra
Sahelanthropus Tchadensis
Nitrogen Fixation
Eutrophication
44. The study of the interaction between organisms and their environment.
Temperature Inversion
Estuary
Ecology
Methane
45. The spraying of pesticides to prevent a pest problem before it happens.
Insurance Spraying
K-Selected Populations
Antarctica
Water Pollution Control Act
46. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Neanderthals
Ecology
Infiltration
Symbiosis
47. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.
Chaparral
Evaporation
National Environmental Policy Act
Snowmelt
48. A type of symbiosis where each species will benefit from interacting with the other.
Mutualism
Transpiration
Detrivores
Subsurface flow
49. 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
Polyculture
Non-government Organizations
Ammonification
50. Organisms which eat other organisms.
National Environmental Policy Act
Consumers
Organism
Transpiration