1.3 Interactions among living things

Adapting to the environment – Natural selection – A process by which characteristics that make an individual better suited to its environment become more common in the species – Niche – The role of an organism in its habitat, or how it makes it’s living.

Niche

3 types of interactions among organisms 1.Competition – The struggle between organisms to survive as they attempt to use the same limited resources. 2.Predation – Effects of predation on population size – Predator adaptations – Prey adaptations 3.Symbiosis – Mutualism – Commensalism – parasitism

3 types of interactions among organisms Predation – An interaction in which one organism kills another for food. – Effects of predation on population size – Predator adaptations – Prey adaptations

Predator adaptations

Prey adaptations

3 types of interactions among organisms Symbiosis – a close relationship between two species that benefits at least one of the species. – Mutualism – Commensalism – parasitism

3 types of Symbiosis – Mutualism – a relationship between two species in which both species benefit. ns+Among+Living+Things (Rhino and bird)

3 types of Symbiosis – Commensalism - a relationship between two species in which one species benefits and the other is neither helped nor harmed.

3 types of Symbiosis – Parasitism - a relationship in which one organism lives in or on a host and harms it.