The pumpkins used for carving at Halloween are typically 7 kilograms in weight what is the approximate weight in pounds

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

This rapid change in species that rarely leaves behind fossil evidence is referred to as

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