Which commonly used group of chemicals suppresses testosterone secretion?

a. phthalates
b. chlorine bleaches
c. PCBs
d. food dyes
e. artificial flavors


a

Biology & Microbiology

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In a malarial infection, only sporozoites can infect the human liver

Indicate whether this statement is TRUE or FALSE.

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The compression of a large amount of wave energy into a suddenly smaller volume of water causes: a. a shallow-water wave

b. a seismic sea wave. c. a deep-water wave. d. breakers.

Biology & Microbiology

There has been and remains great interest in developing safe and effective herbicides. In some situations, it would be desirable to have a herbicide that killed a wide variety of different plants,

but in other cases it would be best to have a herbicide that was much more selective. a) What plant activity would you target to kill the widest variety of plants? b) What plant activity would you target to kill C4 plants? c) What plant activity would you target to kill CAM plants? Be as specific as possible. What will be an ideal response?

Biology & Microbiology

What is the approximate age of Earth?

a. 4.6 million years b. 500 million years c. 2.7 billion years d. 3.6 billion years e. 4.6 billion years

Biology & Microbiology