Place in the oven and roast for 1 1/2 hours, or 30 minutes per pound. 7. Test the roast to make sure it's done. Remove the lid or foil from the pan and insert a meat thermometer into the roast.1  Rare meat is done when its temperature has reached 125 degrees Fahrenheit(52 degrees Celsius).lace in the oven and roast for 1 1/2 hours, or 30 minutes per pound. 7. Test the roast to make sure it's done. Remove the lid or foil from the pan and insert a meat thermometer into the roast. 1  Rare meat is done when its temperature has reached 125 degrees Fahrenheit(52 degrees Celsius).
The eastern lowland gorilla has a black color. The mountain gorilla is black like the eastern lo â¦ wland gorilla, but the hair is longer. The adult male who controls the group develops silver hairs on his back, thus the name silver-back. 12 people found this useful.
There are four subspecies of gorillas: the eastern lowland or Grauerâs gorilla (Gorilla beringei graueri); the mountain gorilla (Gorilla beringei beringei); the western lowland gorilla (Gorilla gorilla gorilla); and the Cross River gorilla (Gorilla gorilla diehl).ike all great apes, gorillas have arms that are longer than their legs and tend to walk on all four limbs at certain times â a movement that is called knuckle walking. Adult males are known as 'silverbacks' due to the distinctive silver-colored hair on their backs.