Competition
Competition explained in an easy to understand way:
Imagine arriving late to a popular café only to find there’s just one croissant left, and multiple customers eyeing it. This situation is similar to the competition in nature where organisms vie for limited resources such as food, water, or space. Just as you and other café patrons 'compete' for that last croissant, living things in an ecosystem compete for limited resources, with each trying to ensure their own survival, much like securing that coveted pastry.
Practice Version
Competition: The struggle between two or more living things for the same limited resource. Competition. In Science, competition is when animals or plants try to get the same food, space, or other resources they all need to survive.