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 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
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
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
What is the minimum number of carbon atoms present in an anhydride?
A) 1 B) 2 C) 3 D) 4
Environmental & Atmospheric Sciences