Please help me on this

Select all that apply. which of the following are functions of the skeletal system? 1. to provide the body with a strong and mobile framework 2. to allow the body to move 3. to protect internal organs from sunlight, bacteria, and injury 4. to supply the body with blood cells and minerals

Bacteria can cause different infections, check all that apply. a. sore throat b. measles c. ear infection d. flu e. cavities

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.