Solution a neutralizes an acidic solution and solution b neutralizes a basic solution. what kind of solutions are solutions a and b?

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

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.

Which of these parts of the membrane large moecules pass through it ?