How much water does one calorie heat through one degree celsius?
a) one milligram
b) one gram
c) one ounce
d) one cup

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

When the mercury level in a barometer decreases that atmospheric pressure has