The ph balance is maintained by which organ?

Wha arrow in the figure points to the section that indicates how much food is in the package/container

Fresh meats (e. g., pork loin) are a better choice for heart health than processed meats (e. g., pork sausage) because (check all that apply) check all that apply fresh meats are lower in fat than processed meats. fresh meats are lower in fat than processed meats. fresh meats are lower in sodium than processed meats. fresh meats are lower in sodium than processed meats. fresh meats are lower in cholesterol than processed meats. fresh meats are lower in cholesterol than processed meats. fresh meats are higher in fiber than processed meats.

Which is the lipid molecule that controls what types of molecules can pass though?