What is the source of embryos used for embryonic stem cell research? What would have been the outcome for these cells had they not been used for research? Why do some people consider this to be unethical while others do not?

Which of the following is not a classification of marine organisms? a. benthos c. neritic b. nekton d. plankton select the best answer from the choices provided a b c d

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

Could someone me with number one you