How many electrons does carbon lack in its outer shell?

What feature of cell theory is best demonstrated in the image

What is the similarities and differences between bacteria and eukaryote?

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions