Question 4 (3 points)
a biogeochemical cycle is
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the process of moving materials in and out of a cell by normal diffusion
the process of inorganic salts entering and leaving seawater,
the tendency of a liquid, gas, or solute to flow from an area of high concentration to an area of low concentration
the process of elements and compounds moving continuously to and from organisms and the earth.
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Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical? a. some people consider embryos to possess rights equal to those of fully developed human beings. b. extracting stem cells from embryos is a very energy-intensive process, which consumes resources that could be used elsewhere. c. embryos are difficult to obtain, so the monetary cost of using them for research outweighs their benefit. d. the process of extracting stem cells from embryos generates biohazardous waste that cannot be safely disposed of.