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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. An extinct hominid species believed to exhibit the first example of full-time bipedalism.
Australopithecus Afarensis
Keystone Species
Precipitation
Hydrologic Cycle
2. 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.
Turbidity
Estuary
Gross Primary Product
Environmental Ethics
3. All of the ecosystems on earth.
Alley Cropping
Biosphere
Sublimation
Superfund Law
4. An influential book by Rachel Carson which helped begin the environmental movement.
Endangered Species Act
Autotrophs
Nitrification
Silent Spring
5. Growing more than one crop at a time.
K-Selected Populations
Polyculture
Transpiration
Organism
6. An act requiring federal agencies to detail the impact of proposed environmental policies.
Nitrous Oxide
Subsistence Farming
Montreal Protocol
National Environmental Policy Act
7. Any living thing on earth.
Organism
Tropical Rain Forest
Autotrophs
Turbidity
8. The process of surface water entering the soil. This ensures that plants have adequate access to water.
Indicator Species
Infiltration
Clean Air Act
Competitive Exclusion
9. 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.
Producers
Stockholm Conference
Carbon Dioxide
Australopithecus Afarensis
10. The uppermost atmospheric layer. Here satellites orbit the earth.
Exosphere
Montreal Protocol
Coniferous Forest
Social Ecology
11. The rapid increase of harmful algae in a body of water.
Economic Threshold
Biomes
K-Selected Populations
Harmful Algal Bloom
12. A partially enclosed part of the ocean with rivers or streams flowing into it.
Estuary
Acid Rain
Toxic Substances Control Act
Tropopause
13. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Toxic Substances Control Act
Temperate Rain Forest
K-Selected Populations
Tundra
14. A community of species interacting with their nonliving (abiotic) environment.
Indicator Species
Hetrotrophs
Ecosystem
Community
15. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Methane
Speciation
R-Selected Populations
Brackish Water
16. 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.
Exosphere
Commensalism
Competitive Exclusion
Silent Spring
17. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.
Estuary
Keystone Species
National Environmental Policy Act
Deciduous Forest
18. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Deciduous Forest
Biodiversity
Biogeochemical Cycle
Organism
19. An international organization designed to promote free trade between countries.
World Trade Organization
Subsurface flow
Wildlife Management
Temperate Rain Forest
20. A group of similar organisms capable of interbreeding.
Species
Indicator Species
Evaporation
Oligotrophs
21. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Social Ecology
Antarctica
Copiotrophs
Intensive Subsistence Farming
22. 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.
Hydrologic Cycle
R-Selected Populations
Intensive Subsistence Farming
Wildlife Management
23. The spraying of pesticides to keep produce from any injuries or damage.
Cosmetic Spraying
Earth Summit
Speciation
Evapotranspiration
24. The amount of pests needed before spraying pesticides is economical.
Biodiversity
Economic Threshold
Vienna Convention for the Protection of the Ozone Layer
Toxic Substances Control Act
25. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.
Polyculture
Agroforestry
Troposphere
Eukaryotes
26. An unstable form of oxygen which protects the earth from UV radiation. Although naturally occurring in the stratosphere (upper atmosphere) - in the lower atmosphere this gas acts as a pollutant.
Lithosphere
Ozone
Coevolution
Omnivores
27. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Ammonification
Nitrification
Producers
Montreal Protocol
28. A type of symbiosis where each species will benefit from interacting with the other.
Autotrophs
Trophic Level
Safe Drinking Water Act
Mutualism
29. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Brackish Water
Symbiosis
Sublimation
Safe Drinking Water Act
30. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Speciation
K-Selected Populations
Grasslands
31. The coexistence of two species using the same resource where the two will use the resource in different ways.
Mutualism
Resource Partitioning
Evapotranspiration
Precipitation
32. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Homo Erectus
Temperature Inversion
Kyoto Protocol
Savannah
33. All members of a species which live in the same area.
Ecological Niche
Deserts
Population
Atmosphere
34. Plants taking in nitrates from the soil.
Assimilation
Turbidity
Detrivores
Temperate Rain Forest
35. Modern man.
Homo Sapiens
Temperate Rain Forest
Trophic Level
Symbiosis
36. Organisms which produce their own food.
Autotrophs
K-Selected Populations
Subsurface flow
Ecological Niche
37. The cloudiness of a liquid due to small suspended particles.
Interplanting
Ecology
Transpiration
Turbidity
38. A transitional area between two different ecosystems.
Producers
K-Selected Populations
Methane
Ecotone
39. 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.
Condensation
Infiltration
Browsers
Biodiversity
40. The crust and upper mantle of the earth.
Coniferous Forest
Biomes
Ecosystem
Lithosphere
41. The study of the interaction between organisms and their environment.
Stratosphere
Speciation
Ecology
Polyculture
42. 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.
Competitive Exclusion
Eutrophication
Surface Run-Off
Brackish Water
43. Populations characterized by large size - long lifespan - and few offspring.
Homo Erectus
Homo Sapiens
Sahelanthropus Tchadensis
K-Selected Populations
44. A rainforest in the temperate zone which receives heavy rainfall.
Temperate Rain Forest
Agroforestry
Alley Cropping
Wilderness Act
45. Animals which eat grass and roots.
Species
Clean Air Act
Grazers
Gross Primary Product
46. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Assimilation
Aldo Leopold
Atmosphere
Competitive Exclusion
47. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Symbiosis
Neanderthals
Biosphere
Harmful Algal Bloom
48. 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
Biomes
Stockholm Conference
Toxic Substances Control Act
Air Pollution
49. Surface run-off caused by melted snow.
Sublimation
Detrivores
Biomes
Snowmelt
50. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Monoculture
Exosphere
Troposphere
Ecological Niche