Science is concerned mainly with the difference between right and wrong. a. natural world. b. spiritual world. c. furthering of physical truths.

Natural world

Explanation:

From the definition of science, we can see that science is concerned with the natural world and has nothing to do with the spiritual world or the furtherance of physical truth. According to the definition, science is the study of nature and how natural things behave. It also goes ahead to understand the knowledge acquired from these natural things.

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d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer