2 Two parts of an Environment Biotic – All the living organisms in an environment.Abiotic – All the non-living objects and factors in the environment.
3 How an organism makes a living. NicheHow a population responds to the abundance of its resources and enemies.How an organism makes a living.
4 Organization in the Environment Organism – individualPopulation – group of organisms of the same species that live in a specific location.
5 Organization in the Environment Community – all the populations of species that live in the same habitat and interact with each other.Ecosystem – A community of organisms and their abiotic environment.Biosphere – the part of Earth where life exists.
6 Producers – make food from the sun. Flow of EnergyProducers – make food from the sun.Consumers – Eat producers and/or other consumers to get energy.Decomposers – break down waste and dead organism. Natural recyclers.
7 Kinds of Consumers:Herbivores – Eat nothing but plantsCarnivores – eats other animalsOmnivores – eat both plants and animalsScavenger – omnivores that eat dead plants and animals. Example turkey vultures.
8 Food Chains and Food Webs Food Chain – The flow of energy from one organism to the next.Food Web – Diagram that shows the feeding relationships between organisms in an ecosystem.
9 Energy PyramidA triangular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain.
10 Types of Interactions: Limiting Factors – When a resource that is so scarce that it limits the size of a population.Carrying Capacity – The largest population that can live in the environment can support.
11 Interactions between Organisms Competition – organisms compete for food, water, shelter, space, sunlight.Predator and preySymbiotic relationshipsCoevolution
12 Predator and Prey:Predators and Prey each of adaptations to use against the other.Prey have camouflage, defensive chemicals, and warning colorations.
13 Symbiosis- relationship between two different organisms Mutualism – When two organisms benefitCommensalism – When one organisms benefits and the other is not affected.Parasitism – When one organism benefits and the other is hurt.
14 CoevolutionThe evolution of two species that is due to mutual influence often in a way that makes the relationship more beneficial to both species.