The answer would be C. Penicillin :)
Maybe answer c) i can't name it exactly why but it seems reasonable .
i think because anatomist is a dissector
D, light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.
Living things in the environment such as plants, animals, and bacteria are biotic factors. Biotic factors also include once-living parts such as dead leaves on the forest floor. Abiotic factors are nonliving aspects of the environment such as sunlight, temperature and water. One important abiotic factor is soil.
