Which visual elements do achromatic and monochromatic schemes rely on to make them more interesting?

Can be made more interesting by varying the types, sizes, forms and textures of white flowers.

Explanation:

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basicall y it's thefour turtles as we all know and love which is micheangelo(my fav) leonardo, donatello, anmd ralphealla and they basically are trying to save the world in this and in this movie beat bop amd rock