Which of the following is a carbohydrate? O A. C4H1503
O B. C7H1405N
C. C52H120070N30P21
O D. C5H1005
PEN

What do scientists need to look at before developing an argument

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

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.