What is the difference between binary & polyatomic ions? & how to differentiate

Augustus of prima porta connects to the subtheme identity performance cultures power

Environmental science jobs are expected to grow by how much between now and 2016? a) 5% b) 15% c) 25% d) 100%

Question 4(multiple choice worth 10 points elise chooses to watch a movie with her friends instead of studying for her english test. this is an example of wasting talent getting distracted allowing others to set goals