Volcanoes play an important role in determining climate change. when a volcano erupts it throws out large volumes of gas and ash into the atmosphere which can influence climatic patterns for years. a) nitrogen b) oxygen c) sulfur dioxide d) carbon dioxide

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?