4 deletion
Explanation:
deletion is a type of genetic mutation involving the removal of a base pair
Rain falling to the ground. water runs downhill and flows toward the sea.
Nitrogen is not a product of photosynthesis
-identify the symptoms that people develop due to the strain
-work on an effective vaccine to help prevent the spread of the virus
Its either a or d
a because if someone takes a photo of the wings they could see how the wings work
or
d because then the person could see the colors in the pictures
