Which statements apply to comets? Check all that apply.

formed of ice, rock, and dust

develop tails near the Sun

Explanation:

Comet is a smaller celestial body which is mainly composed of ice and dust.

The other components of this comet are rocks and gas.

When any comet approaches a sun it can deliver a tail of dust or gas.

hope this will help you

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.