Jawaban:

1. the orang utan, a primate native to Borneo, is endangered
2. large areas of rainforest, most of which are home to diverse, rare and endangered fauna, are being lost to deforestation
3. many of the world's rivers, such as the Yangtze and the Volga, are becoming polluted

Penjelasan:

intinya bikin penjelasan sendiri

kalau di b. Indo contohnya kek begini

"orang utan, ... ((yang merupakan) binatang khas Kalimantan, yang mirip teman saya, (yang) terkenal karena kepintarannya, dsb.), sekarang terancam punah"

semoga membantu