Passage A:
Mountain gorillas are large mammals that weigh up to 440 pounds and when standing, reach heights ranging from four to six feet. As their name states, these animals live in forests high in the mountains in the Democratic Republic of Congo, Rwanda, and Uganda. To survive the harsh, cold temperatures of the mountain range, these gorillas have thick, dense fur to help them stay warm. However, as the human population continues to grow, humans are moving into the mountainous and forested areas. This means the gorillas keep moving further up the mountain, where weather and land conditions make it difficult to survive. As a result of human activity, the mountain gorilla is classified as critically endangered. At one point, scientists thought the species might be completely extinct by the 20th century. However, with the implementation of conservation efforts, there are now 880 mountain gorillas. Although they are still critically endangered, there is hope for this species.

Passage B:
In the thick mountain forests of Central and West Africa, the large and powerful mountain gorilla can be found. In the wild, mountain gorillas travel in families called troops. A troop can consist of up to 30 gorillas, including males, females, and their infants. Within the troop, the gorillas are very playful, gentle, affectionate, and protective. The uniqueness of these animals is one reason why they are classified as a critically endangered species. In the early 20th century, many people flew to Africa to hunt and collect mountain gorillas. Hundreds of mountain gorillas were taken as trophies or for personal collections. Many people who collected gorillas as trophy items wanted baby gorillas. The entire troop of gorillas would protect the baby to the point that they were all wiped out. Additionally, many people hunted gorillas for their meat. As their population became shockingly low, conservation efforts began. With conservationists' hard work and determination, populations are beginning to rise. These efforts ensure the mountain gorillas are happy and protected from harm. Select a detail in Passage B that helps explain why Passage A states that mountain gorillas are endangered because of human activities.

O Atroop can consist of up to 30 gorillas, including males, females, and their intants.

O In the early 20th century, many people flew to Africa to hunt and collect mountain gorillas.

O The uniqueness of these animals is one reason why they are classified as a critically endangered species.

O Within the troop,the gorillas are very playful ,gentle ,affectionate, and protective ​