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Environment and Humanities DANTES Practice Test
1) What are pond pioneers?
A) Algae and other submerged plants which develop in the beginning stages of pond succession.
B) The animals which begin to inhabit a pond as pond succession proceeds.
C) Plants which cover the surface of a pond as it begins to fill in.
D) None of the above
2) _________ is calculated by the number of live births per 1000 population.
A) Birth rate
B) Death rate
C) Infant mortality rate
D) Fetal death rate
3) ________ is when so many nutrients are brought to a body of water that algae grows abundantly, consuming all the oxygen in the water.
4) Which countries have the least and most energy used per person respectively?
A) Denmark, China
B) India, USA
C) Bangladesh, USA
D) China, Russia
5) What is the specific name for large, open grasslands in southern Africa?
6) Where do organisms in deep sea ecosystems get their energy?
A) Gamma rays from the sun, which are invisible to the human eye, penetrate deep into the ocean giving energy to the organisms found there.
B) Geothermally heated waters which issue from hydrothermal vents on the ocean floor.
C) All energy is derived only through decomposing organisms which fall from the waters above.
D) All of the above describe ways the organisms receive energy.
7) Which of the following is NOT a nonrenewable resource?
8) Which of the following is not a part of the three Rs?
9) The area of the atmosphere where temperatures are reversed
D) Ozone shield
10) Which of the following biogeochemical processes is the slowest?
A) Water cycle
B) Nitrogen cycle
C) Phosphorous cycle
D) Sulfur cycle
DSST Practice Test Answer Key:
- A:) Algae and other submerged plants which develop in the beginning stages of pond succession.
- A:) Birth rate. Birth rate is calculated by the number of live births per 1000 population.
- A:) Eutrophication. Eutrophication is when so many nutrients are brought to a body of water that algae grows abundantly, consuming all the oxygen in the water.
- C:) Bangladesh, USA.
- D:) Veldt. Veldts are very similar to steppes, but the term is specific to the grasslands in southern Africa.
- B:) Geothermally heated waters which issue from hydrothermal vents on the ocean floor. Hydrothermal vents allow organisms to thrive, where it wasn’t thought life was even possible.
- C:) Water. Water is considered a renewable resource.
- B:) Repair. The three Rs consist of reduce, re-use, recycle.
- A:) Tropopause. Tropopause is the area of the atmosphere where temperatures are reversed.
- C:) Phosphorous cycle. The phosphorous cycle is the slowest biogeochemical process. This is because phosphorous is released slowly through weathering rocks or decomposition of organisms who had consumed phosphorous.