Which of the following elements is in the fourth period?
A) chromium (Cr)
B) hydrogen (H)
C) beryllium(Be)
D) carbon (C)
E) zirconium (Zr)
A
Environmental & Atmospheric Sciences
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Electromagnetic induction is employed in
A. computers. B. credit card readers. C. mobile phones. D. all of the above
Environmental & Atmospheric Sciences
Despite their instability, over 70 barrier islands off the United States have been commercially
developed. Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
What was the name of the super-continent landmass proposed by Alfred Wegener, who formulated the idea of continental drift?
A. Pangaea B. Eurasia C. Gondwanaland D. Rodinia
Environmental & Atmospheric Sciences
Which of the following best describes the known biological effects of BPA (bisphenol
A), an estrogen-like compound? A) linked to early onset of puberty B) linked to breast cancer C) both a and b D) neither a nor b
Environmental & Atmospheric Sciences