What could a dog living now and a cat living thousand years ago have in common

You need to make 500ml of 7h9(+) media with 1x adn and 30ug/ml of the antibiotic kanamycin. your stock solutions are 10x adn and 30mg/ml of kanamycin. the solvent is distilled water. how much of each component will you need to make the desired final solution?

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Wich level of organization includes all the other levels or organizations