Which evolved first: the bones, ligaments, tendons, blood supply, or the muscles to move the bones?

Which evolved first: the windpipe, the lungs, or the ability of the body to use oxygen?

Which evolved first: blood, the heart, or the blood vessels for the blood to travel through?

Shells from living snails have been “carbon dated” to be 27,000 years old.

If gravity was stronger or weaker by the slimmest of margins, then life sustaining stars like the sun could not exist. This would also make life impossible. How can we account for this?

If the neutron were not about 1.001 times the mass of the proton, all protons would have decayed into neutrons or all neutrons would have decayed into protons, and therefore life would not be possible. How can we account for this?