Which represents an endothermic reaction? burning wood

shining sun

exploding firecracker

melting ice

Blood made up of red and white blood cells work together to form

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.

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?