Geothermal energy is an alternative energy source. however, it is not resourceful enough to replace more than a minor amount of the earth's energy needs. why is this? a. once the cool water is poured down the well and filters through the rocks, the rocks cool off and are no longer hot enough to turn water into steam. b. drilling through the earth to reach areas hot enough to create steam is possible, but very expensive and difficult. c. the center of the earth is not hot enough to make a significant energy contribution. d. there are only a few places where the earth's core is hot. it is cool in places like antarctica.
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Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be โbumpy.โ his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. jโs skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)
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