What muscle do people usually flex to show off their strength?

What noticeable trend from this graph might be used to make a conclusion?

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of