Robert Hooke looked at a sliver of through his microscope, where he noticed "pores" or "cells" in it.

Which plains area lies in both the united states and canada? altiplano central canadian shield coastal plains great plains

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13