Why does weather vary from day to day? A. because cold fronts are always followed by a series of colder fronts, before a warm front returns

B. because weather is a complex interaction among many different variables that are constantly changing

C. because the rotation of the Earth causes the atmosphere to expand and contract as it nears the Sun or Moon

D. because the Sun's energy heats all parts of the Earth evenly but does not heat the atmosphere

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas