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.
WWF works to designate new gorilla sanctuaries, such as in Congo. Adult male gorillas weigh up to 440 pounds and can reach a height of six feet when standing on two legs. Mature male gorillas are known as âsilverbacksâ for the white hair that develops on their back at about 14 years of age.Females have a gestation period of 8.5 months and nurture their young for several years. Generally, females give birth to one baby every four to six years.ature male gorillas are known as âsilverbacksâ for the white hair that develops on their back at about 14 years of age. Females have a gestation period of 8.5 months and nurture their young for several years. Generally, females give birth to one baby every four to six years.