Q: Scurvy is a disease that sailors often got on long voyages. It was discovered that scurvy could be prevented by eating oranges and lemons. This suggests that scurvy is a disease caused by OPTIONS:
- exposure to sea air
- a nutritional deficiency
- a microorganism
- lack of exercise
A: a nutritional deficiency

Which of the following identifies the primary function of a radio station tower in a communication system?
OPTIONS:
- decoder
- encoder
- receiver
- transmitter

transmitter

Q: Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms? ---- OPTIONS:
- consumers
- decomposers
- predators
- producers

A: decomposers

Some of Earth's water is stored underground in porous rock formations known as aquifers. Which of these could use up groundwater in aquifers?
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OPTIONS:
- abundant rain in the Ozarks
- excessive pumping from wells
- dams on the lower Mississippi
- community water conservation

excessive pumping from wells

Question:
Which two processes in the water cycle are primarily responsible for the creation of a lake?
OPTIONS:
- evaporation and runoff
- evaporation and condensation
- precipitation and runoff
- precipitation and condensation
Answer:
precipitation and runoff

[Q]: Which situation is the best example of ecological succession?
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OPTIONS:
- An organism survives a difficult winter.
- The populations in an area remain the same.
- One species replaces another species in an ecosystem.
- Each of several species uses the same amount of resources.
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[A]:
One species replaces another species in an ecosystem.