Answer:The opportunity cost in this scenario is the three lost opportunities Harry experiences by deciding to go to his parents house. The term opportunity cost refers to the loss of potential gain from other alternatives when one alternative is chosen. The potential gain Harry may have lost by choosing to go to his parents for dinner instead could be relaxation while fishing, His house painting being finished, and time spent with his friends at the birthday party. These all can be considers lost opportunity due to choosing an alternate opportunity, that being dinner at his parents.
Explanation:
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Rock composition and measuring the seismic waves provide knowledge for the scientists to study the interior of the earth.
Explanation:
When the crust gets distributed it is easy to study the layers of the different materials that got settled and compacted in the earth. Patterns that are formed in the rocks provides to be a good source to know about the earth's crust. rock cores are cylindrical sections which are cut and removed from the earth crust for research purposes.
It is impossible to drill to the center of the earth and so scientists rely on seismic waves and the speed of the seismic waves depends on the material on which it is passing through. The toughness and stiffness obstruct the speed of the waves which is a means for the scientists to undertake research on the substance which hampered the speed of the seismic waves. P-waves, or pressure waves, which go through both liquids and solids, and S-waves, or shear waves which go through solids but not liquids. This provides the best data to undertake research regarding the earth' crust by the scientists.
<span>The answer is, Dwight D. Eisenhower .</span>
