1. Supplying oxygen to cell and tissue
2. Providing nutrients to cells
3. Protecting your body from infections
The object's mass. Weight would be how gravity affected it, size is how large it is, density is how tightly the molecules are to each other. Mass is how much matter is in the object.
Water is essential to life because it creates us humans, plants, animals, etc. So, if we find water on Mars it would be important because water is essential to life, meaning we would know that there would be some kind of life on Mars because water makes up anything.
If is 67 because of the truck kbsisbe blue
