Literacy :)))))))))))))))))))))))))
The general term of it all is Cytology, which means the study of the cells. This in turn is split into smaller sciences like Cytophysiology (Study of cell physiology and anatomy), Ctyopathology (Study of diseases effects on cells), and Cytochemistry (study of cell biochemistry).
The answer would be too much exposure to the sun...
An excessive amount of sunlight can damage the skin. If you’ll notice, Even the effects of sunburn cause a wrinkly look to the skin.
There are many animal-like characteristics of Euglena. One of the common features that makes euglena be considered an animal is the flagellum which is the tail it used for locomotion.