HELP!! 1. 2 or more atoms chemically bound
2. The region of the earth where two ecosystems interact

List charasteristics of athenosphere

If your blood becomes too concentrated with iona, what will happen to the red blood cells

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers