What do chordates have that makes them different?
a. no body cavities
b. a notochord
c. under-developed organ systems?

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation:

b. read the phase at the intersection of any given temperature and pressure.