Combustion is an example of what type of reaction?
a. synthetic
b. exothermic
c. endothermic
d. thermophyllic

Describe how alleles and genes are related

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

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