Life forms on a newly discovered exo-planet (planet found outside of our solar system) are very similar to those found on earth, except their proteins are made of 128 different amino acids. otherwise, their dna and rna compositions are identical to those found on earth. this observation suggests that the codons coding for the amino acids are likely to be at least how many bases long?

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.

im not intirely sure but i think the anwser is d relative humidity