If you are going from a high gradient to a low gradient it’s passive transport. Think of a hill if you put a rock at the top of that hill it will go down no energy involved. Active transport is going up the hill you must use energy to push that rock up the hill because it’s from a low gradient to the top. Hope this helps
According to source. remain outside the danger (hot) zone is right.
The most primitive form of life is Bacteria.
C. Bacteria.
External nares are another term for nostrils. Naturally, pigs use their nares to breathe in air and expel filtered air from the lungs. The scientific terminology for air entering the lungs is known as inspiration, while air going out is termed expiration.
