Prompt: African Elephant, Sapling, Grassland (Woods), Antelope, Zebra, Tiger, LionThe African Elephant is a keystone species that devours saplings to ensure that grasslands do not turn into woods, so that the herbivores on the savannah have enough grass to graze on, and also to help the large carnivores get a good supply of prey. We can represent the role of keystone species with dominoes: each card represents a species, and together they are the ecosystem. When we carefully remove the antelope domino, the other cards can remain intact, but if we remove the keystone species (the African elephant), it's like knocking down the series of dominoes and the whole ecosystem collapses