Which of the following statements best describes chemical weathering?
a. it always results in dome-shaped formations.
b. it happens only in cool environments.
c. it's the process by which rocks and minerals undergo changes in their composition.
d. it's the type of weathering in which rocks and minerals break down into smaller pieces.

Which of there factors contributed most to us westward expansion in the second half of the nineteenth century?

There are 4 red balls, 6 white balls, and 3 green balls in a bag. if one ball is drawn from the bag at random, what is the probability that it is not white?

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.