The answer to this question is
burning trees
The grassland preserve, without the lion pride, will have an increase on antelope and zebra, therefore decreasing the amount vegetation as they eat the vegetation, without a control in the population, this could be potentially dangerous for the preserve
Mountains determine wind flow, as well as serving as a cloud break. Depending on which side of the mountain you’re on, you will either have a mostly dry, dead region. Or a moist, fertile region.