Two p r i d e s or l i o n s compete with one another for the same prey a n t e l o p e which is e n a r i o what caused the crease in c o m p e t i o n a disease kill individuals from the line population and invasion species are competitors and replace a n t e l o p e d drop reduce the water available for all species
The sentence seems to be talking about a scenario in which two pride of lions are competing for the same prey, an antelope. The competition could have arisen due to a number of factors, such as a decrease in the availability of prey due to disease, a decrease in the population of lions, or the invasion of another species that competes with lions for antelopes. Additionally, the sentence mentions that a reduction in water availability could affect all species involved in the competition.
