Answer:
They are both celestial bodies orbiting our Sun, and they both can have unusual orbits, sometimes straying close to Earth or the other planets
Veins contain valves that ensure blood flows in only one direction. Valves also help blood travel back to the heart against the force of gravity.
Hope this helps.....
Explanation:
- <em>Permian Triassic Extinciton</em>
Lots of places were affected, extinction; in species, vertebrates, etc, etc.
- <em>Devonian extinction</em>
Extinction-- in marine species...
