What makes the worms in phylum annelida so successful

Elongated worm like body <1 mm to 3 meters hollow tube-within-a-tube design one of the most successful animal designs a room for development of complex organs with muscle layers a allows for circulation of body fluids a provides hydro static skeleton

Only algae, oak trees, and bermuda grass produce atp by photosynthesis i am almost positive

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass