ALL stratified lakes contain a thermocline. (True or false?)

ALL stratified lakes contain a thermocline.
 
  Indicate whether the statement is true or false.

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Microbial life has been identified at depths of 3 km despite being anoxic.
 
  Indicate whether the statement is true or false.

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Gammaproteobacteria can be used for biodegradation of hydrocarbons.
 
  Indicate whether the statement is true or false.

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Chemoorganotrophic bacteria can facilitate the formation of soil through the secretion of organic acids.
 
  Indicate whether the statement is true or false.

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Soil particles are classified based on their size.
 
  Indicate whether the statement is true or false.