Rare earths are predominantly mined in ________
A) Russia
B) China
C) Indonesia
D) Argentina
E) Zambia
Answer: B
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Together, these three natural elements make up 99% of the Earth's biomass
A) hydrogen (H), oxygen (O), and carbon (C) B) hydrogen (H), helium (He), and oxygen C) oxygen (O), argon (Ar), and helium (He) D) hydrogen (H), nitrogen (N), and helium (He) E) carbon (C), nitrogen, and helium (He)
Explain how incinerator ash can become toxic when the initial material that is incinerated is not toxic.
What will be an ideal response?
The Pacific coast is commonly called a(n) ____
A) ?active margin B) ?passive margin C) ?margin that gradually transitions from a passive to an active margin D) ?margin that continually changes from being a passive margin to an active margin and then back to passive margin
Engineering is a "Back Office" function
Indicate whether the statement is true or false