Which phase of the above-described situation could be called computer simulation?
a. when the scientists gathered woodrat dropping for lab analysis
b. when the scientists learned from the computer that woodrat nest numbers would impact cactus populations
c. when the scientists first observed the proximity of woodrat nests and cactus plants
d. all of these answers
e. none of these answers
B
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What term describes the straight scratches on rock surfaces created by glacial abrasion?
A)rock flour B)glacial striations C)glacial till D)varves E)moraines
Which of the following is true regarding groundwater?
A) It is unlimited when compared with the amount of surface water supplies. B) When polluted, it is actually easier to clean up than is surface water. C) The total amount of groundwater has been reduced by the mining of water. D) In terms of total amount, it is second to streams in the United States.
A(n) ________ is a silicate structure where no silica tetrahedra share any oxygen ions
A) single chain B) double chain C) framework D) independent
Which of the following is present in fetal hemoglobin but not adult hemoglobin?
A) a-chains B) b-chains C) g-chains D) none of these