Which is not a function of nutrients?

What do scientists need to look at before developing an argument

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

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity