What technique did renaissance painters use to create light-dark gradations that form the illusion of objects in space?

hello

i dont understand the question much but the kind my family always gets is the pillsbury's kind

hope this

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i think cheerleading is definitely a form of art. or at least it should be! not everyone has what is takes/and or the determination to become a cheerleader. it takes practice and hard work, along with being able to master a move correctly, like dancing. dancing is a form of art, and i think cheerleading is too. not everyone can dance, just like not everyone can be a cheerleader.