Hi there!
The stage after Protostar would be - Sequence Star.
Hope this helps you!
~DL
Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.
Because they are not trained to
Fluffing creates a pocket of air near the bird that acts as insulation.
White blood cells (D) aid in the immune system to fight infections.
