An bond forms when two atoms share one or more pairs of electrons?

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

What is responsible for the uneven heating between the poles and the equator on any given day