Which dietary standard, expressed as percentages of total energy, defines the recommended intake range for the macronutrients?
a. recommended dietary allowance (rda)
b. acceptable macronutrient distribution range (amdr)
c. tolerable upper intake level (ul)
d. estimated average requirement (ear)

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

What molecules does hemoglobin decay into over time

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.