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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. A greenhouse gas which also plays a key role in regulating ozone levels.
Nitrous Oxide
Biomes
Aldo Leopold
Ecology
2. Precipitation which does not reach the soil but is instead collected by plants.
Interception
Indicator Species
Omnivores
Tropical Rain Forest
3. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Superfund Law
Eutrophication
Denitrification
Turbidity
4. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Tundra
Interplanting
Taiga
Economic Threshold
5. Populations characterized by large size - long lifespan - and few offspring.
K-Selected Populations
Coniferous Forest
Organism
Indicator Species
6. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Polyculture
Safe Drinking Water Act
Exosphere
Australopithecus Afarensis
7. Organisms with a nucleus.
Economic Threshold
Condensation
Eukaryotes
Antarctica
8. Evolution in one organism due to change in a related organism.
Ozone
Non-government Organizations
Subsistence Farming
Coevolution
9. Consumers which eat decomposing organic material.
Assimilation
Lithosphere
Detrivores
Eutrophication
10. Single-celled organisms which lack a nucleus.
Clean Air Act
Subsurface flow
Prokaryotes
Economic Threshold
11. Plants taking in nitrates from the soil.
Assimilation
Evaporation
Tundra
R-Selected Populations
12. The study of the interaction between organisms and their environment.
Ecology
Keystone Species
Hydrologic Cycle
Competitive Exclusion
13. Organisms which produce their own food.
Homo Erectus
Autotrophs
Chaparral
Hydrosphere
14. A transitional area between two different ecosystems.
Savannah
Hydrosphere
Ecotone
Subsurface flow
15. Average expected birth rate for 1 -000 women.
Total Fertility Rate
Shifting Agriculture
Evaporation
Neanderthals
16. 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.
Ozone
Evaporation
Speciation
Brackish Water
17. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Methane
Resource Partitioning
Population
Homo Habilis
18. The process of planting trees in between other crops.
Parasitism
Species
Silent Spring
Alley Cropping
19. 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.
Intensive Subsistence Farming
Homo Erectus
Ecosystem
Carnivores
20. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.
Vienna Convention for the Protection of the Ozone Layer
Tropopause
Producers
Evaporation
21. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Evapotranspiration
Agroforestry
Population
Hydrosphere
22. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Producers
Symbiosis
Sublimation
Precipitation
23. 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
Oligotrophs
Autotrophs
Gross Primary Product
24. The rapid increase of harmful algae in a body of water.
Harmful Algal Bloom
Thermosphere
Biodiversity
Sahelanthropus Tchadensis
25. The spraying of pesticides to prevent a pest problem before it happens.
Cosmetic Spraying
Producers
Transpiration
Insurance Spraying
26. A type of symbiosis where each species will benefit from interacting with the other.
Atmosphere
Mutualism
Brackish Water
Grasslands
27. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Detrivores
Grazers
Nitrogen Fixation
Mesosphere
28. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Snowmelt
Endangered Species Act
Surface Run-Off
29. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Homo Erectus
Temperate Rain Forest
Biodiversity
Grasslands
30. Different species living in close contact with each other.
Vienna Convention for the Protection of the Ozone Layer
Symbiosis
Browsers
Community
31. All of the ecosystems on earth.
Interplanting
Prokaryotes
Competitive Exclusion
Biosphere
32. An international convention which created the framework for protecting the ozone layer.
Population
Thermosphere
Subsistence Farming
Vienna Convention for the Protection of the Ozone Layer
33. 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.
Eutrophication
Infiltration
Organism
Tundra
34. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Copiotrophs
Acid Rain
Homo Sapiens
Exosphere
35. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Community
Earth Summit
Sahelanthropus Tchadensis
Commensalism
36. An influential book by Rachel Carson which helped begin the environmental movement.
Copiotrophs
Sublimation
Silent Spring
Antarctica
37. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Environmental Protection Agency
Precipitation
Non-government Organizations
Turbidity
38. Surface run-off caused by melted snow.
Deserts
Non-government Organizations
Snowmelt
Sublimation
39. The loss of water vapor from leaves.
Homo Erectus
Cosmetic Spraying
Transpiration
Advection
40. The uppermost atmospheric layer. Here satellites orbit the earth.
Kyoto Protocol
Eukaryotes
Exosphere
Cosmetic Spraying
41. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Surface Run-Off
Intensive Subsistence Farming
Carnivores
Consumers
42. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Organism
Aldo Leopold
Hydrologic Cycle
43. A variety of species living together.
Community
Methane
Carbon Dioxide
Economic Threshold
44. 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.
Brackish Water
Methane
Biodiversity
Lithosphere
45. The process of planting different plant species right next to each other to maximize one's yield.
Prokaryotes
Interplanting
Hydrosphere
Vienna Convention for the Protection of the Ozone Layer
46. An act which established and enforced acceptable levels of air pollution.
Sahelanthropus Tchadensis
Intensive Subsistence Farming
Advection
Clean Air Act
47. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Keystone Species
Economic Threshold
Population
Deserts
48. An international protocol designed to stabilize global warming.
Harmful Algal Bloom
Kyoto Protocol
Methane
Savannah
49. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Environmental Protection Agency
Montreal Protocol
Hetrotrophs
Methane
50. Organisms which eat other organisms.
Coevolution
Speciation
Consumers
Hetrotrophs