A cell sends messages to itself via O paracrine signaling
o the endocrine system
k
o the nervous system
O autocrine signaling

Are the earth's ocean floor and continents the same age geologically? why or why not?

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

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm