Its mass. The mass of the moon is even the single and only cause of its gravity.
the moons gravity
the moons gravity.
Our moons gravity.
It causes the tides. Tides are also caused - to a lesser degree - by Sun's gravity.
the tides and gravity
In our solar system, at least, the planet with the greatest mass does happen to be the one with the most known moons. But I think the cause and effect work the other way. It's not the moons that give the planet strong gravity. It's the strong gravity of the planet that captures a bunch of moons.
Everything has gravity, the bigger it is the more it has. Moons DO have gravity, but it might be less than Earth's.
The forces of gravity between two masses are the cause of all orbits.
by gravity
The gravity of the Moon, and to a lesser extent, the gravity of the Sun.
Not specifically. The Moon's gravity does cause Earth's tides, and tides do affect the weather, but weather is more of a local phenomenon.
gravity