An animal is a kangaroo.
Two resources that a kangaroo might have to compete for is grasses and shrubs.
Due to many animals eating grasses and shrubs, overgrazing could happen. If there is not enough grass in a specific location where animals live, then the animals may die from starvation.
Two adaptations that kangaroos have is they can use their legs to jump from place to place up to high speeds.
Also, kangaroos from desert and semi-arid environments have adapted to drier conditions and have several features that help them deal with the lack of water.
Hope this helped!