Answer: I think is C - sand + cobalt oxide + lime + heat
Explanation:
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In basic terms, shape describes a flat, enclosed area of space. Shapes can be constructed with colors and lines, but all shapes are limited to two dimensions – width and length. Curves and other irregular, flowy shapes are known as organic shapes, while angular shapes like squares and triangles are geometric shapes.
Simultaneous contrast refers to the way in which two different colors affect each other. The theory is that one color can change how we perceive the tone and hue of another when the two are placed side by side.
