Curbing global heating will not save our planet's ecosystems. They are threatened more immediately by other human activities including deforestation, overgrazing, overfishing, desertification, and soil degradation.

A relationship does exist: global heating will eventually destroy many ecosystems, if they survive that long. But we have to curb the other environmental threats, too.

Having fewer children will help reduce all those forms of excessive human impact, all at once. And will free up your effort to work on the other problems.