Millions of sperm are needed because most of them don't make it up there to the egg. So i'm thinking maybe more sperm means the higher chance of the egg being fertilized.<span />
Answer:
creo que la respuesta es cuádriceps femoral
Modern stromatolites – living fossils. Originating over 3 billion years ago, stromatolites are the oldest known fossils (timeline). Fossilized stromatolites were laid down as colonial structures built by photosynthesizing Cyanobacteria and other microbes.
A.) Veins in the pulmonary circuit carry oxygen-rich blood
red blood cells are used to circulate oxygen through out the body, thus it is true.
