Compare a porifera to a commercial sponge.

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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