Endotherms usually, but don't always, maintain a body temperature that is than that of the environment.

The correct answer are "constant and higher".

Endotherms are described as an is an organism that maintains its body state at a metabolically favorable temperature, in large part by using heat set free by using its internal physical functions as opposed to depending nearly simply on ambient warmth.

Very minute and important evidence needs to be collected in order together detail and figure out what had happened