This 18 August 2019 video from the USA says about itself:
“Mother Nature has it figured out. She’s designed a master scheme that connects plants and animals, all working in concert to keep every living thing in balance. Imagine a stack of dominoes—knock down one of them, and the rest will tumble. The same can happen in nature.
This is especially evident in places like central Africa and in South American tropical rainforests where certain animals—from the world’s largest to its smallest—help keep trees safe and healthy, which is critical as trees absorb vast amounts of planet-warming carbon pollution.
Recent research warns that losing the creatures that nurture trees puts forests in danger. This, by extension, is helping to accelerate dangerous climate change.
In central Africa, for example, elephants eat fast-growing trees, making room for those that grow more slowly. The slow-growing trees—with their very dense wood—store more carbon than their thinner, faster-developing counterparts. Without elephants, more carbon would accumulate in the atmosphere, worsening climate change, according to a new study that used computer models to project what could happen if elephant populations continue to dwindle or become extinct.”
Read more here.