Some bacteria are not able to function properly and replicate at the fever-high temperatures hence this reduces their infection rates in the body. More research has also shown that the temporal increase in body temperature, during the fever, increases the activity of the cytotoxic T-cells that are significant in fighting infection.
The endosymbiosis explains how eukaryotic cells may have evolved from prokaryotic cells.
Tissues form when many similar specializes cells come together.
The level of complexity in organisms from smaller to larger are:
Cells, tissue, organ, organ system, and organism finally.
Cells makes up tissue, tissue makes up organ, organs makes up organ systems, and organ systems makes up an organism.
Therefore, if the same type of cells come together, they'll make up tissue.
As seen in the video game death stranding.
Two extinction level events happened and wiped out half of all human life. Building and cars and homes were destroyed and replaced by growling grass or dirt. A new species of bug came about called a cryptobite and a bridge was formed between the world of living and dead and hence forth came the rise of beached things