Erosion of limestone buildings fountains and sculptures is caused largely by

From my understanding, limestone wears down by water (rain and snow). This could be bad if the limestone is outside in a rainy/snowy environment.

Ihaven't heard of any of them but by their name probably kevin gates

Idid the quiz. the true answers to this question is  2.michelangelo used the hatching technique of drawing parallel line close together  1.leonardo used the sfumato technique of blending and blurring chalk so edges nearly dissapear3.van gogh used a variety of expressive strokes to create different surfaces and textures. to the above answer, i got it wrong. i have copy-pasted from the question, putting the answers here.i hope this .  ~rosy67read more on -