What are altitudes? help pls

What is the importantence of the carbon and nitretan cycles in the environment

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

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?