What is an “altered or damaged” part of dna called

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

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

Which of th following is needed for cellular respiration to occur