2. Deduce Each atom of protium has one proton, no neutrons, and one electron. Each
atom of deuterium has one proton, two
neutrons, and one electron. Are these the
same or different elements? Why?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery

White-headed woodpeckers are adapted to have strong beaks that can break into tree trunks to find bugs and can also open pine cones to get at the seeds. white-headed woodpeckers are best adapted to living in the biome.