Guys plese me with my two most recent questions! i will mark as brainliest!

The body is protected against harmful flu viruses by

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.