Please help me with this question with an explanation, will give brainliest answer.

Which is an example of a population?

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

What kinds of molecules can pass through the cell membrane without any problem?