They are different in structure as one serves in an open system (lymphatic system) while the other serves is closed system (circulatory system).
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*This question is common, so this answer I use a lot. I copied my own work.*
Answer: A. Phenotype
Explanation:
Phenotype: the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
Genotypes produce phenotypes.
Answer:
B. It will erode rocks over long periods of time.
Explanation:
because the snow and rain are gonna keep hitting the rock and after a long period of time it's going to slowly get eroded from the force of the rain and snow.