Which way can heat never flow? a. hot to colds b. cold to hot c. liquid to solid d. solid to liquid

What is the relationship of air masses and the temperature of oceans?

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum