Why is the idea of common descent only a conclusion? It's based on directly observable data.
It's not observable, but is determined based on a large amount of
related evidence.
It's a recent idea without much evidence supporting it.

It's not observable, but is determined based on a large amount of

related evidence.

Explanation:

did you mean: energy is defined ashyperactivitya caloric measurementthe ability to move matterthe ability to think and analyze this form of energy is called "energy in motion" or "energy of moving matter"potential energy kinetic energy electrical energy1 ptlights on a stage can be examples of all of the following forms of energy exceptelectrical energylight energythermal energysound energywhen one type of energy changes to another this is called energy energy is stored based on their position or shape this is called energy.kinetic potential sound electromagnetic