An example of selective breeding and why or how this is used in or by living things

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Identify and describe the three ways that mutations affect organisms.

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.