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 General Science Questions

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Q:

The transfer of minerals from top soil to subsoil through soil­water is called?

A) Percolation B) Conduction
C) Leaching D) Transpiration
 
Answer & Explanation Answer: C) Leaching

Explanation:
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Q:

A kind of foliated metamorphic rock

A) slate B) gneiss
C) phyllite D) All of the above
 
Answer & Explanation Answer: D) All of the above

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Q:

Which of these is a starting point for primary succession?

A) a surface exposed by a retreating glacier B) a neglected yard
C) abandoned farmland D) an abandoned city
 
Answer & Explanation Answer: A) a surface exposed by a retreating glacier

Explanation:

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.

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Q:

Data collected to date indicate that

A) New species of bacteria may be discovered in wild animals. B) Humans and marine mammals cannot be infected by the same pathogens.
C) Marine mammals do not get infectious diseases D) None of the above
 
Answer & Explanation Answer: D) None of the above

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Q:

Plants that are more rare today are

A) Hydrophytes B) Xerophytes
C) Mesophytes D) None of the above
 
Answer & Explanation Answer: A) Hydrophytes

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Q:

Photorespiration lowers the efficiency of photosynthesis by

A) consuming carbon dioxide B) removing ribulose bisphosphate molecules
C) releasing RuBP carboxylase molecules D) None of the above
 
Answer & Explanation Answer: B) removing ribulose bisphosphate molecules

Explanation:

photorespiration lowers the efficiency of photosynthesis by removing ribulose bisphosphate molecules.

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Q:

Which energy source generates the least greenhouse gases?

A) Fossil fuels energy B) Nuclear energy
C) Solar energy D) All of the above
 
Answer & Explanation Answer: A) Fossil fuels energy

Explanation:

Fossil fuels energy source generates the least greenhouse gases. Of them, i.e, oil, natural gas and coal, natural gas source generates the least greenhouse gases.

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Q:

Which receptors adapt most slowly?

A) touch receptors B) smell receptor
C) pressure receptors D) nociceptors
 
Answer & Explanation Answer: D) nociceptors

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