Explain how natiral selection is responsible for distribution of allel abnormal form of haemoglobin

What happens when a magniseum ion ia atracked to a chlrene ion

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Which type of landform forms at the plate boundary as a result of divergent stress