Which structure is found in all eukaryotic cells?
a.) chloroplast
b.) mitochondria
c.) cell wall
d.) pili

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

Which of the following is the most likely outcome of global warming

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi