In response to falling levels of testosterone, which hypothalamic hormone rises?

a. prostaglandins
b. FSH
c. LH
d. GnRH
e. hCG


ANSWER: d

Biology & Microbiology

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When a plant becomes infected by pathogenic bacteria or fungi, it may respond by way of a fight or

flight response – a defense that cordons off an infection site surrounding it with dead cells.

Indicate whether the statement is true or false.

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Fossil fuels ____

a. can be recycled b. are produced by living organisms c. are the organic remains of ancient organisms d. can reduce climate change e. release less energy than wood when they are burned

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Fossils used to define and identify geologic periods are ________ fossils.

A. index B. body C. trace D. stromatolite

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