2. Ionophores because they are class of proteins that move cell membranes. They are small, hydrophobic molecules that increase a cell's permeability to certain ions.
The puppies heads are often to big to fit through their mothers birth canal. They may get birth defects like flat chests, if their face are wrinkly they get acne and eye problems, and they are prone to skeletal disorders like hip dysplasia.
Answer:
Electrons can move from one substance to another when objects are rubbed together.
This is the excretory system
