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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. 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.
Sahelanthropus Tchadensis
Estuary
Deserts
Earth Summit
2. The flow of water in the water table.
Alley Cropping
Nitrification
Transpiration
Subsurface flow
3. The conversion of nitrates into nitrogen gas.
Denitrification
Wildlife Management
Eutrophication
Cosmetic Spraying
4. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Stratosphere
Silent Spring
Grasslands
Monoculture
5. The amount of pests needed before spraying pesticides is economical.
Eukaryotes
Species
Harmful Algal Bloom
Economic Threshold
6. 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.
Ecotone
Taiga
Environmental Protection Agency
Shifting Agriculture
7. The rate at which producers create organic material.
Homo Erectus
Gross Primary Product
Interception
Symbiosis
8. 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.
Carbon Dioxide
Clean Air Act
Nitrification
Symbiosis
9. Political organizations not affiliated with the government which try to bring about social change.
Australopithecus Afarensis
Nitrous Oxide
Non-government Organizations
Taiga
10. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Surface Run-Off
Carnivores
Tropopause
Montreal Protocol
11. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Mesosphere
Assimilation
Chaparral
Subsistence Farming
12. A community of similar living organisms largely affected by the area's climate.
Surface Run-Off
Biogeochemical Cycle
Hydrosphere
Biomes
13. An act which protects certain lands as national parks.
Coevolution
Infiltration
Wilderness Act
Toxic Substances Control Act
14. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Sublimation
Temperature Inversion
Evaporation
Producers
15. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Precipitation
Taiga
Acid Rain
Interplanting
16. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.
Stratosphere
Condensation
Indicator Species
Toxic Substances Control Act
17. Populations characterized by small size - short lifespan - and lots of offspring.
R-Selected Populations
Mutualism
Community
Kyoto Protocol
18. Consumers which eat only other animals.
Tropical Rain Forest
Estuary
Carnivores
Stockholm Conference
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
Clean Air Act
Oligotrophs
Homo Erectus
20. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Copiotrophs
Acid Rain
Temperate Rain Forest
Stratosphere
21. 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
Omnivores
Precipitation
Surface Run-Off
22. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Alley Cropping
Tundra
Acid Rain
Lithosphere
23. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.
Ecosystem
Ammonification
Savannah
Ozone
24. A theory that our current ecological problems are a product of deeper social problems.
Social Ecology
Autotrophs
Water Pollution Control Act
Troposphere
25. Organisms which thrive in low nutrient environments and usually have slow growth rates.
Prokaryotes
Temperate Rain Forest
Coniferous Forest
Oligotrophs
26. 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.
Speciation
Oligotrophs
Competitive Exclusion
Air Pollution
27. An extinct hominid species believed to be the last common ancestor between man and apes.
Total Fertility Rate
Interception
Resource Partitioning
Sahelanthropus Tchadensis
28. The cloudiness of a liquid due to small suspended particles.
Turbidity
Keystone Species
Sahelanthropus Tchadensis
Atmosphere
29. 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.
Environmental Ethics
Silent Spring
Taiga
Deserts
30. A shubland found primarily in the South-Western United States and Mexico. Fire plays a predominant role in the life-cycle of the plants in this area - the seeds of which will sprout only after a fire.
World Trade Organization
Grasslands
Agroforestry
Chaparral
31. 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.
Intensive Subsistence Farming
R-Selected Populations
Carbon Dioxide
Carnivores
32. 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.
Vienna Convention for the Protection of the Ozone Layer
Stratosphere
Environmental Ethics
Biodiversity
33. The rapid increase of harmful algae in a body of water.
Carnivores
Biomes
Social Ecology
Harmful Algal Bloom
34. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Ammonification
Superfund Law
Savannah
Detrivores
35. A rainforest in the temperate zone which receives heavy rainfall.
Temperate Rain Forest
K-Selected Populations
Endangered Species Act
Ecosystem
36. Organisms which eat other organisms.
Consumers
Interplanting
Precipitation
Autotrophs
37. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Deciduous Forest
Oligotrophs
Air Pollution
Water Pollution Control Act
38. A layer of gasses surrounding the earth.
Cosmetic Spraying
Mesosphere
Atmosphere
Thermosphere
39. A forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.
Safe Drinking Water Act
Tropical Rain Forest
Coniferous Forest
Organism
40. The position of an organism on the food chain.
Trophic Level
Vienna Convention for the Protection of the Ozone Layer
Snowmelt
Homo Sapiens
41. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Subsistence Farming
Community
Ecological Niche
Australopithecus Afarensis
42. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Safe Drinking Water Act
Vienna Convention for the Protection of the Ozone Layer
Indicator Species
Ecotone
43. The study of the interaction between organisms and their environment.
Eutrophication
National Environmental Policy Act
Homo Habilis
Ecology
44. A partially enclosed part of the ocean with rivers or streams flowing into it.
Parasitism
Estuary
Consumers
Oligotrophs
45. An act which set standards for the amount of pollution in water.
Social Ecology
Water Pollution Control Act
Trophic Level
Biosphere
46. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Alley Cropping
Omnivores
Stratosphere
Earth Summit
47. 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.
R-Selected Populations
Economic Threshold
Ozone
Toxic Substances Control Act
48. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Deciduous Forest
Ozone
Nitrous Oxide
Troposphere
49. Plants taking in nitrates from the soil.
Coniferous Forest
Assimilation
Kyoto Protocol
Wildlife Management
50. Animals which eat leaves and shoots.
Sahelanthropus Tchadensis
Browsers
Subsistence Farming
Shifting Agriculture