You can determine that the deer population was reduced by 1, due to the losses being more than the gains. It can also be expressed as a math problem
6 - 5 - 3 + 1= -1
B) The cells growth would slow down
Cancer cells divide endlessly
Nothing will happen. This is know as an isotonic solution. Meaning the osmotic pressure inside the cell equals the osmotic pressure outside of the cell. Aka. theres the same amount of water inside and outside the cell, so no osmosis will happen because a difference in concentrations is required.