- Competition
Competition is when organisms fight, or compete, with each other for food and habitat. Whoever has the most desirable traits and being able to obtain more than their competitors would have a high chance of surviving and thrive in the environment.
In very dense forests, plants must compete with each other for sunlight that is hardly found on the surface level. The ones that can grow higher would have the ability to obtain more sunlight and survive.
- Mutualism
Mutualism is when two organisms live close and benefit from each other.
Ants and trees is among the many examples of mutualism. The ants could live in the tree and eat some of its leaves, while the tree is defended by the ants against other predators.
- Predation
Predation is when one organism preys on another organism.
One example is when lions hunt and kill zebras for food.
- Parasitism
Parasitism is when one organism benefits through another organism.
Ticks and mosquitoes are common examples of parasitism. They feed off of bodies of other organisms, like humans, for their blood.
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