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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 be the last common ancestor between man and apes.
Hydrosphere
Sahelanthropus Tchadensis
Assimilation
Subsistence Farming
2. A layer of gasses surrounding the earth.
Atmosphere
Stratosphere
Commensalism
Oligotrophs
3. Modern man.
Eutrophication
Montreal Protocol
Homo Sapiens
Condensation
4. Animals which eat grass and roots.
Surface Run-Off
Grazers
Stratosphere
Sahelanthropus Tchadensis
5. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.
Speciation
Wildlife Management
Ecological Niche
K-Selected Populations
6. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.
Tundra
Population
Subsistence Farming
Savannah
7. A type of symbiosis where one species benefit at the expense of the other.
Parasitism
Economic Threshold
Methane
Aldo Leopold
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.
Ammonification
Commensalism
Carnivores
Carbon Dioxide
9. An international convention which created the framework for protecting the ozone layer.
Homo Erectus
Sahelanthropus Tchadensis
Vienna Convention for the Protection of the Ozone Layer
Environmental Protection Agency
10. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.
Eutrophication
Deciduous Forest
Indicator Species
Grasslands
11. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.
Non-government Organizations
Interplanting
Stratosphere
Nitrogen Fixation
12. The study of the interaction between organisms and their environment.
Grasslands
Gross Primary Product
Tropical Rain Forest
Ecology
13. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.
Symbiosis
Homo Habilis
Assimilation
Total Fertility Rate
14. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.
Parasitism
Biogeochemical Cycle
Non-government Organizations
Nitrification
15. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.
Omnivores
Brackish Water
Nitrogen Fixation
Exosphere
16. Average expected birth rate for 1 -000 women.
Keystone Species
Total Fertility Rate
Parasitism
Brackish Water
17. Precipitation which does not reach the soil but is instead collected by plants.
Interception
Infiltration
Harmful Algal Bloom
Silent Spring
18. The flow of water in the water table.
Coevolution
Snowmelt
Gross Primary Product
Subsurface flow
19. The rate at which producers create organic material.
Consumers
Gross Primary Product
Advection
Biodiversity
20. 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.
Copiotrophs
Homo Habilis
Intensive Subsistence Farming
Savannah
21. Consumers which eat both plants and animals.
Omnivores
Ecological Niche
Kyoto Protocol
Tundra
22. The amount of pests needed before spraying pesticides is economical.
Savannah
Economic Threshold
Biomes
Ozone
23. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.
Hydrologic Cycle
Savannah
Subsurface flow
Tropopause
24. 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.
Interception
Community
Biodiversity
Homo Habilis
25. A greenhouse gas which also plays a key role in regulating ozone levels.
Nitrous Oxide
Aldo Leopold
Chaparral
Ecosystem
26. A community of species interacting with their nonliving (abiotic) environment.
Ecosystem
Endangered Species Act
Tundra
Hydrologic Cycle
27. An act which established and enforced acceptable levels of air pollution.
Interplanting
Non-government Organizations
Environmental Protection Agency
Clean Air Act
28. 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.
Superfund Law
Safe Drinking Water Act
Temperate Rain Forest
Shifting Agriculture
29. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.
Savannah
Mesosphere
Clean Air Act
Indicator Species
30. An act which set standards for the amount of pollution in water.
Nitrification
Tropopause
Hetrotrophs
Water Pollution Control Act
31. The UN's first major conference on environmental issues.
UN Conference on Population and Development
Stockholm Conference
Non-government Organizations
Snowmelt
32. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.
Temperate Rain Forest
Eutrophication
Tropopause
Advection
33. Growing only one crop at a time.
Monoculture
Homo Erectus
Transpiration
Grazers
34. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.
Montreal Protocol
Atmosphere
Copiotrophs
Earth Summit
35. The spraying of pesticides to prevent a pest problem before it happens.
Insurance Spraying
Precipitation
Subsurface flow
Omnivores
36. An act which protects certain lands as national parks.
Wilderness Act
Deciduous Forest
Intensive Subsistence Farming
Browsers
37. Animals which eat leaves and shoots.
UN Conference on Population and Development
Snowmelt
Atmosphere
Browsers
38. Plants taking in nitrates from the soil.
National Environmental Policy Act
Autotrophs
Hetrotrophs
Assimilation
39. Single-celled organisms which lack a nucleus.
Biogeochemical Cycle
Prokaryotes
Keystone Species
Monoculture
40. Organisms which consume autotrophs for food.
Hetrotrophs
Carbon Dioxide
Condensation
Coevolution
41. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.
Temperature Inversion
Grasslands
Resource Partitioning
Ecotone
42. A type of symbiosis where each species will benefit from interacting with the other.
Mesosphere
Mutualism
Wilderness Act
Oligotrophs
43. Populations characterized by small size - short lifespan - and lots of offspring.
Surface Run-Off
Interplanting
R-Selected Populations
Hydrosphere
44. The coexistence of two species using the same resource where the two will use the resource in different ways.
Omnivores
Resource Partitioning
Alley Cropping
Ammonification
45. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.
Carnivores
Temperature Inversion
Antarctica
Precipitation
46. Political organizations not affiliated with the government which try to bring about social change.
Oligotrophs
Non-government Organizations
Competitive Exclusion
Vienna Convention for the Protection of the Ozone Layer
47. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.
Tundra
Eutrophication
Aldo Leopold
Speciation
48. Surface run-off caused by melted snow.
Consumers
Snowmelt
Tropical Rain Forest
Aldo Leopold
49. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.
Commensalism
Evaporation
Deserts
Thermosphere
50. The cloudiness of a liquid due to small suspended particles.
Kyoto Protocol
Intensive Subsistence Farming
Turbidity
Prokaryotes