the three dimensional structure of dna was determined by two scientist named james d watson and francis crick they determined that the dna moleclue was shaped like a cross shaped. during replication

the fossil record provides evidence of a common ancestor to many species.

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.

my teacher would say no s