an example of keystone species would be what
Some examples of keystone species, and why they are considered keystone species Let us start by a pretty common example, such as the grey wolf (Canis lupus). This is an apex predator that feed on large herbivores such as moose, deer and roe deer, and are in many parts of the world important to keep these herbivore populations from growing too high.
Sea otters are an example of a keystone species because due to their feeding habits, kelp is allowed to flourish which leads to absorption of high amounts of #CO_2#, preservation of the organisms which rely on kelp for survival, as well as protecting coastlines.