Why is Mars red?
A) It is made primarily of the red rock known as reddite.
B) Its surface rocks were rusted by oxygen.
C) Its atmosphere scatters blue light more effectively than red light.
D) Its surface is made of ices that absorb blue light.
E) Its surface is made of ices that absorb red light.
B) Its surface rocks were rusted by oxygen.
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The northern Atlantic Ocean is the source region for the ______________ type of air mass
a. cA b. cP c. mP d. mT
Graphical Analysis: The graph in the figure shows the position of a particle as a function of time as it travels along the x-axis.(a) What is the average speed of the particle between t = 2.0 s and t = 4.0 s?(b) What is the average velocity of the particle between t = 2.0 s and t = 4.0 s?
What will be an ideal response?
If a sound level increases by 20 dB, the intensity increases by a factor of _______.
a. one thousand b. one hundred c. ten d. ten thousand
Complete the equation: CH3CH = CH2+ H2? ____________________
Fill in the blank(s) with correct word