Because of Saturn's rings, what are we unable to observe from Earth? Its bright blue color
Its solid core
Its well defined shaped
Its lack of moons

Its well defined shaped

Explanation:

Due to Saturn's rings, we are unable to observe from earth the well defined shape.

Saturn is made up of pieces of comets and asteroids under the pull of the Saturn's gravity.

This ring is not transparent and very opaque. It obstructs the view of the planet's surface. Thereby making it difficult to see the shape of the planet.

Magma is outside the volcano  and lava is inside the volcano. 

Answer volcanic outgassing;