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Why is it essential to operationally define the variables in a study?

Which of the following is a reason to approach smaller banks for a business loan? question options: their criteria for approving a loan are much less stringent than those for larger banks. they emphasize personal relationships and may give more weight to personal attributes. they have lower fees. they grant larger loans.

Which of the following situations would most likely occur if a human-induced event caused the ocean water to become the same temperature around the world? deep ocean current circulation would increase salt distribution around the world's oceans. surface ocean current circulation would distribute heat around land masses at a faster rate. new, fresher water would float on top of dense salt water and limit thermohaline circulation. some land masses in the northern hemisphere would start to warm up over time, melting snow and ice. runoff of surface freshwaters and rainfall would no longer have an effect on the salinity of ocean waters.