Microtubules provide a rigid structure, or cytoskeleton
Answer:
The blood vessel from lungs to heart is pulmonary vein which carries oxygenated blood.
Minerals
Explanation:
Minerals can be found in the cactus and ground and are very resourceful
Sweat glands. :)
Perspiration leaves the body through the sweat glands.
The subatomic particles of protons and neutrons are found in the nucleus of an atom. Protons are particles with a positive charge, while neutrons have no charge. Electrons, which have a negative charge, are particles that can found orbiting outside the nucleus of an atom.
