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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Phytoplankton are primarily classified as what type of organism?
a. heterotroph b. organotroph c. photoheterotroph d. autotroph e. chemoheterotroph
Environmental & Atmospheric Sciences
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
Describe how hail might form in a cumulonimbus cloud
What will be an ideal response?
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