Which of the following tests can best you classify a rock as sedimentary, metamorphic, or igneous?
a) pour acid on it and see if it bubbles.
b) examine its layers, texture, and color.
c) hold a light to it and examine its luster.
d) examine its streak color.

The answer is d the box plots show the data distributions for the number of customers who used a coupon each hour during a two-day sale. which measure of variability can be compared using the box plots? interquartile range standard deviation mean median

Why would the composition of a meteorite resemble the earth's interior?

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)