Which of the following is incapable of
reproducing outside a host cell?
-alga
-mold
- moss
-virus

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

The most effective way to provide children with safety messages is to

Which statement describes the punctuated equilibrium theory?