Epoxy resin may be reacted with itself in the presence of an anionic catalyst (a Lewis base such as tertiary amines or imidazoles) or a cationic catalyst (a Lewis acid such as a boron trifluoride complex) to form a cured network. This process is known as catalytic homopolymerisation.
A gorilla's lifespan is normally between 35 and 40 years, although zoo gorillas may live for 50 years or more. Colo, a female western gorilla at the Columbus Zoo and Aquarium was the oldest known gorilla, at 60 years of age when she died on January 17, 2017.
Montane bamboo forests are the most common habitats of eastern gorillas with the range measuring at 600â3308 m (1969-10,853 ft). Western gorillas also live in the submontane forests, lowland forests, and swamps with the range measuring 150â1600 m (492â5249 ft). Most gorillas exist in humid equatorial rainforest, but few of them reside in primary forests.