Which issue is a negative effect of cell technology on society?
immortal animal cell lines can be used to model human cells.
the use of human cells in research can lead to ethical problems.
organ culture increases the time between donation and transplant.
people are more aware of the results of cell technology research.

the use of human cells in research can lead to ethical problems

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.