What is composed of more than 200 billion stars including the sun

The galaxy, not solar system. A solar system is a system around a singular star or central point, while a galaxy is a collection of solar systems and orbital structures.

The solar system consist of stars and sun

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric