SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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 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
Silent Spring
Omnivores
Precipitation
2. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Indicator Species
Species
Ecology
Precipitation
3. 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.
Ozone
Mesosphere
Aldo Leopold
Deserts
4. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Population
Taiga
Temperature Inversion
Tropopause
5. 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.
Hydrosphere
Parasitism
Chaparral
Subsistence Farming
6. A layer of gasses surrounding the earth.
Atmosphere
Wildlife Management
R-Selected Populations
Producers
7. 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
Ecosystem
Shifting Agriculture
Air Pollution
Nitrous Oxide
8. An influential book by Rachel Carson which helped begin the environmental movement.
Silent Spring
Grazers
Parasitism
Consumers
9. Populations characterized by large size - long lifespan - and few offspring.
K-Selected Populations
Kyoto Protocol
Biogeochemical Cycle
Grasslands
10. Precipitation which does not reach the soil but is instead collected by plants.
Wilderness Act
Chaparral
Interception
Ecological Niche
11. An act created to protect endangered and threatened species.
Wildlife Management
Brackish Water
Competitive Exclusion
Endangered Species Act
12. Organisms with a nucleus.
Condensation
Ecological Niche
Eukaryotes
Polyculture
13. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Hydrologic Cycle
Browsers
Copiotrophs
Eukaryotes
14. A type of symbiosis where each species will benefit from interacting with the other.
Advection
Mutualism
R-Selected Populations
Alley Cropping
15. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.
Hydrosphere
Evapotranspiration
Copiotrophs
Hetrotrophs
16. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.
Brackish Water
Australopithecus Afarensis
Earth Summit
Evaporation
17. The study of the interaction between organisms and their environment.
Ecology
Acid Rain
Nitrogen Fixation
Keystone Species
18. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.
Mutualism
Coniferous Forest
Ecological Niche
Subsistence Farming
19. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.
Nitrification
Snowmelt
Turbidity
Montreal Protocol
20. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.
Troposphere
Thermosphere
Environmental Ethics
Environmental Protection Agency
21. The flow of water in the water table.
Snowmelt
Copiotrophs
Carnivores
Subsurface flow
22. Consumers which eat both plants and animals.
Tundra
Aldo Leopold
Superfund Law
Omnivores
23. 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.
Agroforestry
Ecotone
Commensalism
Hydrologic Cycle
24. 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.
Speciation
Tropopause
Environmental Protection Agency
Keystone Species
25. Single-celled organisms which lack a nucleus.
Cosmetic Spraying
Wildlife Management
Resource Partitioning
Prokaryotes
26. The uppermost atmospheric layer. Here satellites orbit the earth.
Tundra
Biosphere
Alley Cropping
Exosphere
27. Modern man.
Grasslands
Carbon Dioxide
Ecology
Homo Sapiens
28. Animals which eat grass and roots.
Temperature Inversion
Commensalism
Grazers
Ecological Niche
29. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Neanderthals
Exosphere
Carbon Dioxide
Aldo Leopold
30. Organisms which produce their own food.
Toxic Substances Control Act
Autotrophs
Social Ecology
Acid Rain
31. Plants taking in nitrates from the soil.
Biogeochemical Cycle
Grasslands
Assimilation
Antarctica
32. 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.
Precipitation
Advection
Hetrotrophs
Environmental Ethics
33. The crust and upper mantle of the earth.
Biogeochemical Cycle
Lithosphere
Deciduous Forest
Aldo Leopold
34. A theory that our current ecological problems are a product of deeper social problems.
Hetrotrophs
Social Ecology
Homo Habilis
Earth Summit
35. The coexistence of two species using the same resource where the two will use the resource in different ways.
Prokaryotes
Homo Sapiens
Resource Partitioning
Hetrotrophs
36. Any living thing on earth.
Subsistence Farming
Browsers
World Trade Organization
Organism
37. 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.
Snowmelt
Eutrophication
Deciduous Forest
Infiltration
38. The process by which pollutants are carried by flowing water - such as a river.
Ecosystem
Evapotranspiration
Advection
Earth Summit
39. An international convention which created the framework for protecting the ozone layer.
Precipitation
Coniferous Forest
Vienna Convention for the Protection of the Ozone Layer
Hydrologic Cycle
40. A greenhouse gas which also plays a key role in regulating ozone levels.
Nitrous Oxide
Consumers
World Trade Organization
Hydrosphere
41. An act which set standards for the amount of pollution in water.
K-Selected Populations
Coevolution
Snowmelt
Water Pollution Control Act
42. Excess water which cannot be infiltrated into the soil and instead flows along the ground.
Producers
Surface Run-Off
Deserts
Species
43. The process of a gas transforming into a liquid.
Condensation
Biodiversity
Neanderthals
Surface Run-Off
44. The middle atmospheric layer. Meteors burn up after entering this layer.
Population
Detrivores
Mesosphere
Evapotranspiration
45. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.
Neanderthals
Sublimation
Taiga
Carnivores
46. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
R-Selected Populations
Population
Homo Habilis
Homo Sapiens
47. The amount of pests needed before spraying pesticides is economical.
Interception
Economic Threshold
Acid Rain
Ecological Niche
48. Growing only one crop at a time.
Monoculture
Air Pollution
Estuary
Polyculture
49. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.
Troposphere
Biogeochemical Cycle
Snowmelt
K-Selected Populations
50. 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.
Ozone
Ecological Niche
National Environmental Policy Act
Assimilation