Which racer was the fastest? 5 points
distance
time
Racer A
Racer B
Racer C
o
Racer D

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.

On his trip to the galapagos islands, darwin determined that animals on the islands

What are positive impacts of algae? how is it used?