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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 transitional area between two different ecosystems.
Biosphere
Alley Cropping
Ecological Niche
Ecotone
2. All of the ecosystems on earth.
Homo Sapiens
Air Pollution
Biosphere
Prokaryotes
3. The crust and upper mantle of the earth.
Lithosphere
Homo Sapiens
Environmental Protection Agency
Stratosphere
4. 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.
Coevolution
Biodiversity
Hetrotrophs
Population
5. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Tropopause
Hydrosphere
Grasslands
Commensalism
6. A community of similar living organisms largely affected by the area's climate.
Biomes
Intensive Subsistence Farming
Copiotrophs
Competitive Exclusion
7. All of the water found on earth.
Australopithecus Afarensis
Precipitation
Hydrosphere
Interception
8. Populations characterized by large size - long lifespan - and few offspring.
Biogeochemical Cycle
K-Selected Populations
Troposphere
Oligotrophs
9. The coexistence of two species using the same resource where the two will use the resource in different ways.
Insurance Spraying
Resource Partitioning
Species
Eukaryotes
10. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Grazers
Tropical Rain Forest
Ecological Niche
Hetrotrophs
11. 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.
Eukaryotes
Tropical Rain Forest
Deciduous Forest
Browsers
12. Organisms with a nucleus.
Eukaryotes
Hydrosphere
Sublimation
Copiotrophs
13. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Alley Cropping
Australopithecus Afarensis
Deserts
Nitrification
14. Surface run-off caused by melted snow.
Commensalism
Resource Partitioning
Snowmelt
Deserts
15. An extinct hominid species believed to be the last common ancestor between man and apes.
Water Pollution Control Act
Endangered Species Act
Sahelanthropus Tchadensis
Ammonification
16. 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.
Hydrologic Cycle
Vienna Convention for the Protection of the Ozone Layer
Exosphere
Nitrous Oxide
17. 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.
Biomes
Sublimation
Deserts
Homo Erectus
18. Consumers which eat only other animals.
Nitrogen Fixation
Methane
Carnivores
Kyoto Protocol
19. The rapid increase of harmful algae in a body of water.
Taiga
Indicator Species
Harmful Algal Bloom
Environmental Ethics
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.
Clean Air Act
Shifting Agriculture
Precipitation
R-Selected Populations
21. Modern man.
Keystone Species
Social Ecology
Homo Erectus
Homo Sapiens
22. The process of planting different plant species right next to each other to maximize one's yield.
Interplanting
Kyoto Protocol
Biodiversity
Nitrous Oxide
23. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Earth Summit
Eukaryotes
Carnivores
Toxic Substances Control Act
24. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Troposphere
Eutrophication
Oligotrophs
Hetrotrophs
25. All members of a species which live in the same area.
Economic Threshold
Species
Detrivores
Population
26. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Vienna Convention for the Protection of the Ozone Layer
Grasslands
Ecological Niche
Deciduous Forest
27. An international protocol designed to stabilize global warming.
Kyoto Protocol
UN Conference on Population and Development
Assimilation
Producers
28. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Detrivores
Parasitism
Exosphere
Brackish Water
29. The uppermost atmospheric layer. Here satellites orbit the earth.
Economic Threshold
Ozone
Hydrosphere
Exosphere
30. 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.
Temperature Inversion
Coniferous Forest
Carbon Dioxide
Polyculture
31. Consumers which eat both plants and animals.
Prokaryotes
Harmful Algal Bloom
Omnivores
Coniferous Forest
32. Animals which eat grass and roots.
Hydrologic Cycle
Grazers
Shifting Agriculture
Competitive Exclusion
33. Growing only one crop at a time.
Monoculture
Biosphere
National Environmental Policy Act
Condensation
34. An act which set standards for the amount of pollution in water.
Water Pollution Control Act
Stratosphere
Temperate Rain Forest
World Trade Organization
35. An international organization designed to promote free trade between countries.
World Trade Organization
Wildlife Management
Species
Ecosystem
36. Growing more than one crop at a time.
Homo Habilis
Eutrophication
Environmental Ethics
Polyculture
37. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Homo Erectus
Assimilation
Earth Summit
Hydrologic Cycle
38. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Savannah
Taiga
Mesosphere
Nitrification
39. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Coniferous Forest
Prokaryotes
Commensalism
Assimilation
40. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Detrivores
Social Ecology
Brackish Water
Homo Habilis
41. Animals which eat leaves and shoots.
Browsers
Producers
Indicator Species
Chaparral
42. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Australopithecus Afarensis
R-Selected Populations
Troposphere
Mesosphere
43. The conversion of nitrates into nitrogen gas.
Biosphere
Denitrification
Earth Summit
Deserts
44. Organisms which eat other organisms.
Consumers
Ozone
Omnivores
Commensalism
45. The process of planting trees in between other crops.
Eukaryotes
Acid Rain
Organism
Alley Cropping
46. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Chaparral
Harmful Algal Bloom
Mutualism
47. A community of species interacting with their nonliving (abiotic) environment.
Ecosystem
Biomes
Oligotrophs
Alley Cropping
48. The middle atmospheric layer. Meteors burn up after entering this layer.
Insurance Spraying
Carnivores
Grazers
Mesosphere
49. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Parasitism
Stratosphere
Eutrophication
Tundra
50. A type of symbiosis where each species will benefit from interacting with the other.
Hydrosphere
Species
Mutualism
Harmful Algal Bloom