How do scientists collect data? A. Through educated guesses
B. Through interpretation of the conclusions
C. Through analysis of the results
D. Through careful observation and measurement

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

the answer for this question would be d. glaciers

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.