<span>habitat destruction, pollution, over-harvesting, disease, predation, and other natural or man-made factors must be reviewed and evaluated before an animal or plant can be placed on the federal endangered or threatened species list</span>
They were better off. Without the discovery of the uses of fire, mankind would not be here. Fire led to the rapid increase of newer, more advanced tech, such as a sword instead of a club.
I do not understand what exactly your question is but,
The 3 branches are the <u><em>Executive</em></u> branch, <em><u>Legislative</u></em> branch, and <em><u>Judicial</u></em> branch.
The <em>Legislative</em> branch <em>makes the laws</em>.
The <em>Executive</em> branch <em>enforces laws or put them in action</em>.
The <em>Judicial</em> branch <em>passes the law</em>.
This separation is called <u><em>"The Separation of Powers"</em></u>.