The natural blind spot is due to lack of receptors where the optic nerve and blood vessels leave the eye. There can also be artificial blind spots when something blocks light from reaching the photoreceptors, or when there is local adaptation of the retina as just after seeing a bright light
In lakes and ponds there is a whole ecosystem, with its animals and plants. Between them they are in charge of maintaining the entire habitat in favorable conditions for living. The fish tank does not have that cleaning system.
4 deletion
Explanation:
deletion is a type of genetic mutation involving the removal of a base pair
Kinetic sand is what I would pick
Most likely ion channel-linked receptor if u look it up
