1. Your body needs to breathe in order to get oxygen . True
False
2. Only some cells in your body need oxygen.
True
False
3. Your diaphragm and other muscles work together to help you inhale and exhale.
True

False

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?

The fact that the total amount of energy in a system remains constant is a(n)