What are the two different groups of diatoms called

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

How do you date a sample of rock that you suspect as being one of the earliest on earth

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2