The fibrous protein that makes up your hair, fingernails, and toe nails is called:

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Wich level of organization includes all the other levels or organizations

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above