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select the correct answer from each drop-down menu.
water is an important part of the biogeochemical cycles on earth. complete the sentences about water,
in the water cycle, water from rivers, lakes, and streams, enters the atmosphere through
in the carbon cycle, water exits the pores of leaves in plants by a process known as
in the nitrogen cyde,
move nitrogen from the atmosphere into the soil.
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Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.