Which of the following functions by activating an enzyme?

A) acetylcholine
B) epinephrine
C) estradiol
D) insulin


B

Environmental & Atmospheric Sciences

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On the average, how much of the Sun's energy that is intercepted by the earth system is reflected to space?

A) 30 percent B) 45 percent C) 25 percent D) 19 percent E) 51 percent

Environmental & Atmospheric Sciences

Which of the following does not belong with the others?

A) Topographic influences B) Light C) Edaphic influences D) Oxygen cycle E) Wind

Environmental & Atmospheric Sciences

Describe how hail might form in a cumulonimbus cloud

What will be an ideal response?

Environmental & Atmospheric Sciences

Phytoplankton are primarily classified as what type of organism?

a. heterotroph b. organotroph c. photoheterotroph d. autotroph e. chemoheterotroph

Environmental & Atmospheric Sciences