Which curve corresponds to chlorophyll a?

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

The smallest parts of these that retain their original properties are called

Procedure in pregnancy to have access to fetus. what do you call this procedure?