Which of the following types of power does not use a turbine to generate electricity?
O A. Wind
B. Nuclear
C. Coal
O D. Solar

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

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

Why are common names a problem for scientist?