Cov qhov rooj hluav taws tau muab faib ua feem ntau qhib hluav taws qhov rooj thiab ib txwm kaw qhov rooj hluav taws. Feem ntau qhib qhov rooj hluav taws yog khaws cia rau lub sijhawm zoo tib yam thiab siv rau kev hla. Nquag kaw qhov rooj tua hluav taws tuaj yeem tiv thaiv kev cuam tshuam ntawm cov pa taws thiab hluav taws tom qab hluav taws, yog li lawv yog ib qho tseem ceeb rau kev tiv thaiv hluav taws.