Which of the following is an example of an
alternative energy source?
O A. Coal
O B. Oil
O C. Natural gas
O D. Wind

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell