Answer:
Invertebrates can have bilateral or radial symmetry, or they can be asymmetrical. Bilateral symmetry means that the animal is arranged in the same way on both sides. Radial symmetry means the body parts are arranged in a circle around a central point.
Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
Nutrients enter a cell up the concentration gradient by the process of active transport.
