At what time in evolution did genes coding for keratins appear? a. at the time plants and animals diverged b. at the time modern humans diverged from neanderthals c. at the time animals moved from water to land d. at the time primates first appeared e. at the time that animals with soft exteriors appeared mcb 252

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit