Why pushing a box up a hill is harder than pushing it on flat ground?

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explanation:

wind is defined by the direction it blows from.   for example, a wind blowing from north to south is called a northerly wind.

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

it was given as a lesson and guide for prayer.

it's a b and