Which of the following elements has two valence electrons?
A. Ne
B. Mg
C. H
D. Li
E. Na
Answer: B
Environmental & Atmospheric Sciences
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Which of the following has provided information associated with past temperature changes?
a. tiny bubbles of ancient air found in ice cores b. tree rings c. radioisotopes in rocks and fossils d. layers of soot trapped in ice cores e. all of these answers
Environmental & Atmospheric Sciences
Which of the following is the largest region of the Earth's interior?
A) crust B) mantle C) outer core D) inner core
Environmental & Atmospheric Sciences
The gravel bed load of a stream moves by ________.
A. solution B. flotation C. sliding and rolling D. dissolution E. suspension
Environmental & Atmospheric Sciences
________ is the turbulent water created by breaking waves
A) A swell B) A refracted wave C) A tombolo D) Surf
Environmental & Atmospheric Sciences