Which two forms of energy travel in waves?
a. light and sound eliminate
b. heat and electricity
c. mechanical motion and light
d. electricity and mechanical motion.?

Is snow a type of precipitation? explain why or why not.

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia