At home, when confronted with an approaching tornado, you should:a
open the windows right away.
b. grab a video camera and start filming.
c. listen to see whether the tornado has an audible roar.
d. seek shelter immediately.
d
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Balance these equations. ________ H2 (g) + ________ N2 (g) ? ________ NH3 (g)
A. 2, 2, 5 B. 3, 3, 2 C. 3, 1, 2 D. 2, 2, 3
Flowering plants called ____________________ flourished in the Late Cretaceous. Fill in the blank(s) with the appropriate word(s)
Which of the following are ways in which a geologist may determine the density of earth materials?
A. by measuring the different velocities of seismic waves B. through direct measurement in the laboratory C. using instruments to measure the pull of gravity D. All of these choices are correct.
Which of the following is a neurotoxin shown to decrease IQ in children?
A) BPA B) Asbestos C) Lead D) PCB