What happens to organisms if they are not able to adapt to a changing environment?

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

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