A living organism is a cell that is similar to the humanoid ones. This excludes cells such as plant cells. A living organism also had to be able o make proteins for itself, such as humans do. A human would be a living organism. An animal would be a living organism.
The answer is C.) Sac. More formally known as the amniotic sac. It's also sometimes called the bag of waters.
The brain which, along with the spinal cord gathers informationand responds to changes in the environment.
Answer:
Letter a) Protists would have less permeable membranes than those in hypotonic or Isotonic environments, wlowing less water to enter the coll. Also, they could possibly develop higher salt concentration within the cell to retain water.
