Volcanic ________ are big fragments that are liquid when airborne.
A. blocks
B. cinders
C. bombs
D. ash
Answer: A
Environmental & Atmospheric Sciences
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The UN reports that how many children die each day from unsafe water and lack of basic sanitation?
A) 4000 B) 40000 C) 400 D) 100 E) 10000
Environmental & Atmospheric Sciences
The ocean appears to be in ____ because the proportion and amounts of its dissolved salts per unit volume are nearly constant
A) constant chemical flux B) acid-base balance C) thermal inertia D) chemical equilibrium
Environmental & Atmospheric Sciences
What is the minimum number of carbon atoms present in an anhydride?
A) 1 B) 2 C) 3 D) 4
Environmental & Atmospheric Sciences
As ecological development proceeds, a biological community
A. Becomes less complex B. Goes through repeated primary succession stages C. Gradually stagnates D. Goes through repeated secondary succession stages E. Becomes more diverse
Environmental & Atmospheric Sciences