What is the point at which a dna strand is unzipped so that it can form new complementary bases?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

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