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Test your basic knowledge |
DSST Environment And Humanity
Start Test
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Subjects
:
dsst
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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. The coexistence of two species using the same resource where the two will use the resource in different ways.
Hydrologic Cycle
Mutualism
Resource Partitioning
Indicator Species
2. A transitional area between two different ecosystems.
Oligotrophs
Interception
Ecotone
Social Ecology
3. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Surface Run-Off
Subsistence Farming
Water Pollution Control Act
Biomes
4. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Sublimation
Parasitism
Ecotone
Denitrification
5. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.
Aldo Leopold
Precipitation
Water Pollution Control Act
Gross Primary Product
6. The spraying of pesticides to keep produce from any injuries or damage.
Cosmetic Spraying
Superfund Law
Precipitation
Neanderthals
7. Single-celled organisms which lack a nucleus.
Prokaryotes
Autotrophs
Condensation
Eukaryotes
8. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Alley Cropping
Tundra
Social Ecology
Sublimation
9. The southern-most continent - of which 98% is ice. This continent includes 70% of the world's fresh water - and 90% of the world's ice. Although the average temperature is -49
Infiltration
Antarctica
Wilderness Act
Browsers
10. All of the water found on earth.
Deserts
Estuary
Hydrosphere
Economic Threshold
11. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Biogeochemical Cycle
Non-government Organizations
Polyculture
Surface Run-Off
12. 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.
Assimilation
Sublimation
Tropical Rain Forest
Interception
13. Precipitation which does not reach the soil but is instead collected by plants.
Temperate Rain Forest
Interception
Vienna Convention for the Protection of the Ozone Layer
Assimilation
14. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Ammonification
Shifting Agriculture
Tropopause
Air Pollution
15. The process of a gas transforming into a liquid.
Community
Condensation
Taiga
Australopithecus Afarensis
16. A partially enclosed part of the ocean with rivers or streams flowing into it.
Competitive Exclusion
Montreal Protocol
Estuary
Earth Summit
17. 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
Temperate Rain Forest
Commensalism
Condensation
18. Populations characterized by small size - short lifespan - and lots of offspring.
Homo Erectus
Wildlife Management
R-Selected Populations
Monoculture
19. A group of similar organisms capable of interbreeding.
Competitive Exclusion
Methane
Population
Species
20. Organisms which eat other organisms.
Nitrogen Fixation
Consumers
Cosmetic Spraying
Subsistence Farming
21. Growing only one crop at a time.
Vienna Convention for the Protection of the Ozone Layer
Monoculture
Speciation
Toxic Substances Control Act
22. Animals which eat grass and roots.
Nitrogen Fixation
Grazers
R-Selected Populations
Environmental Protection Agency
23. The uppermost atmospheric layer. Here satellites orbit the earth.
Exosphere
Savannah
Interception
Detrivores
24. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Non-government Organizations
Wildlife Management
Commensalism
Indicator Species
25. 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.
Temperature Inversion
Methane
Competitive Exclusion
Aldo Leopold
26. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Nitrogen Fixation
Antarctica
Resource Partitioning
Deserts
27. All of the ecosystems on earth.
Transpiration
Biosphere
Tropical Rain Forest
Estuary
28. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.
Evaporation
Agroforestry
R-Selected Populations
Methane
29. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Denitrification
Species
Subsistence Farming
Aldo Leopold
30. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Stockholm Conference
Detrivores
Temperature Inversion
Agroforestry
31. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Advection
Snowmelt
Autotrophs
32. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.
Neanderthals
Sublimation
Stratosphere
Interplanting
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.
Savannah
Eutrophication
Vienna Convention for the Protection of the Ozone Layer
Ecological Niche
34. 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.
Carnivores
Carbon Dioxide
Safe Drinking Water Act
Stockholm Conference
35. Political organizations not affiliated with the government which try to bring about social change.
Homo Sapiens
Non-government Organizations
Eutrophication
Producers
36. A greenhouse gas which also plays a key role in regulating ozone levels.
Keystone Species
Shifting Agriculture
Superfund Law
Nitrous Oxide
37. Surface run-off caused by melted snow.
Cosmetic Spraying
Homo Sapiens
Eutrophication
Snowmelt
38. An international protocol designed to stabilize global warming.
Methane
Grazers
Vienna Convention for the Protection of the Ozone Layer
Kyoto Protocol
39. Organisms which produce their own food.
Coniferous Forest
Water Pollution Control Act
Copiotrophs
Autotrophs
40. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Cosmetic Spraying
Grazers
Ecology
Savannah
41. Modern man.
Biosphere
Stockholm Conference
Insurance Spraying
Homo Sapiens
42. 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.
Alley Cropping
Insurance Spraying
Ammonification
Biodiversity
43. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Community
Infiltration
Shifting Agriculture
Copiotrophs
44. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.
Resource Partitioning
Toxic Substances Control Act
Grazers
Superfund Law
45. An agency created to establish regulations concerning pollutants to protect humans and the environment.
Australopithecus Afarensis
Intensive Subsistence Farming
Species
Environmental Protection Agency
46. A community of species interacting with their nonliving (abiotic) environment.
Organism
Precipitation
Ecosystem
Denitrification
47. 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.
Vienna Convention for the Protection of the Ozone Layer
Nitrification
Prokaryotes
Deserts
48. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Montreal Protocol
Hydrologic Cycle
Water Pollution Control Act
Tropical Rain Forest
49. The position of an organism on the food chain.
Trophic Level
Tropopause
Ecotone
Biodiversity
50. 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.
Estuary
K-Selected Populations
Chaparral
Biomes
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