According the theory developed by Lynn Margulis (endosymbiotic theory, why was it adaptive for a host cell to keep an engulfed cell alive, rather than digesting it and using it as food?

The engulfed cell provided the host cell with adenosine triphosphate (ATP).

Explanation:

The engulfed cell provided the host cell with adenosine triphosphate (ATP) therefore, as long as they continued their partnership, the host cell can get free energy.

multiplying and dividing the two decimals and the eqations by the same number of the overalls

voluntary muscles are controlled by the cerebellum.