Why are excessive concentrations of phosphorus sometimes considered a pollutant

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above

In which area of the neuron is an action potential initially generated?

Which organelle in a eukaryotic cell is most noticeable under a microscope? nucleus nucleolus ribosome nuclear envelope