THREE ways hiv is transmitted from infected to uninfected

Which of the following is not associated with invasive species?

Why has two different alleles for the same trait?

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