5. Global warming may cause O A. rise in sea levels
O B. increase in ocean temperatures
O C. melting of glaciers and polar ice caps
O D. all of the above

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Discuss the functions of epithelial connective nerviud and muscular tissues