. Yazmin is watching her teacher do an experiment. As she is observing, what should she be looking for to identify the experiment as a chemical reaction?

A. A gas being produced

B. Color change

C. Temperature change

D. Any of the above

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.