Deforestation and inappropriate agriculture otherwise known as over farming are factors of and causes of desertification.
I believe it becomes less dense, bc when you heat something it’s molecules spread further apart.
No, according to physics no work has been done.
Work must have been done by muscular force but in terms of physics no work has been done.
In physics,work is said to be done only if the force applied produced some kind of displacement in the direction of force.
In this example provided, no work has been done since the boulder doesn't get displaced,it continues to remain at its original position.
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