Biology

The correct answer is: B.Limited resources

Here's why:

Competition occurs when organisms in an ecosystem vie for the same limited resources, such as food, water, shelter, or mates. When these resources are in short supply relative to the demand, organisms must compete for access to them, which can lead to competitive interactions.

Why the other options are not correct:

A.Cycling of minerals: The cycling of minerals (like nitrogen, phosphorus, etc.) is an important ecological process, but it doesn’t directly promote competition. In fact, the cycling of nutrients helps maintain ecosystem productivity by replenishing essential elements.

C.Decomposition of organic matter: Decomposition breaks down organ...