Which of the four fundamental forces pulled together hot, dense areas of matter in the early universe to jumpstart the process of star formation?

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Factors that determine climate can a- latitude, topography, huracan, ocean current b- sun, precipitation, winds, precipitation c- sun, ocean currents, latitude, topography, winds, precipitation d- latitude, topography, lighting, ocean current

Given: m∠apc = 27°, m dc = 27° find: m ab