Supergiant stars a. form from red giants. c. form planetary nebulae. b. fuse hydrogen into carbon. d. form supernovas.

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.

What are some possible consequences of preventing prescribed burns and natural wildfires

Agriffin is a mythical creature that appears in many stories. it has the head of an eagle and the body of a lion. what role if any could the griffin have in the science of biology