The seed plants become dominant during the late when the climate became

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.

How do living things obtain phosphorus

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water