In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next ...

New research from the University of Minnesota upends long-held understanding about how wolves, bears and cougars—three of ...

Competition will occur between organisms in an ecosystem when their niches overlap, they both try to use the same resource and the resource is in short supply. Animals compete for food ...

When an individual directly alters the resource-attaining behavior of other individuals, the interaction is considered interference competition. For example, when a male gorilla prohibits other ...

Our comprehensive search suggests that venom delivery systems fully analogous to those of animals exist among plants, fungi, protists, bacteria, and viruses. Thus, venomous organisms are far more ...

If asexual reproduction survives at all, conditions must sometimes favor it, even in competition for a niche ... is on the side of asexual organisms: Without the need for males, every clonal ...

Organisms within an ecosystem are organised into levels. Producer Producers are plants and algae, which photosynthesise. Primary consumer Primary consumers are herbivores, which eat producers ...