Which statement describes gravity? check all that apply.1. there is no defined unit of measurement for gravity.2. gravity is the force that pulls objects toward earth’s center.3. objects that have a small mass will have no gravitational pull.4. gravitational pull between two objects increases as the mass of one increases.5. gravitational pull decreases when the distance between two objects increases.

1. There is not defined unit of measurement for gravity.

Newtons are the unit of measurement for gravity.

2. Gravity is the force that pulls objects toward Earth's center

Because the Earth is a sphere the gravitational pulls counteract with each other and it balances out in the middle, so if you were to fell the gravity of the center of the earth it would be weightless.

most community's take hundreds of years to become stable

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.