Question

student argues that carnivores such as lion Cheetah and tiger are seen in grassland ecosystems rather than thick forest justify​

Answer 1

Lions did kill cheetah in Etosha; the recorded cases were translocated cheetah versus resident lion; in other areas in Namibia, and currently in Etosha, lion and cheetah co-exist; several of the big five carnivore (cheetah & leopard; cheetah & brown hyena) also co-exist;  more so, the presence of one of the five predict (often) the presence of the other.