Help please
for 10 points

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

Competition occurs between species when

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing