Many cars today are designed to get better gas mileage than those made in the past. This change resulted from a need to

a. recycle materials
b. improve safety
e. produce chemicals
d. conserve resources

According to the cladogram, which organisms have roundworms as a common ancestor?

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

What will happen if two of the base pairs of the stand of the dna are switched