3. Which areas of the bathroom are most likely to be contaminated? Taps
Flushes
Toilet Seat
Door Handles
Communal Towels
TODOS
All of the Above

toilet seat

Explanation:

the dookie in the toilet

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.