Teaching Essential Principle Two Climate is regulated by complex interactions among components of the Earth system. Teaching this principle is supported by six key concepts. Click here to see them all. Earth';s climate is influenced by interactions involving the sun, ocean, atmosphere, clouds, ice, land, and life. Climate varies by region as a result of local differences in these interactions. Covering 70% of Earth';s surface, the ocean exerts a major control on climate by dominating Earth';s energy and water cycles. It has the capacity to absorb large amounts of solar energy...