Speciation
The Formation Of New Species Through Processes Such As Reproductive Isolation, Genetic Divergence, And Natural Selection.

Gene Flow
The Movement Of Alleles Between Populations Through Migration, Which Can Increase Genetic Variation And Influence Evolution.

Genetic Drift
A Random Change In Allele Frequencies Within A Population Over Time, Often Having A Stronger Effect In Small Populations And Contributing To Evolution.

Natural Selection
A Process In Which Individuals With Heritable Traits That Increase Survival Or Reproduction Leave More Offspring, Causing Those Traits To Become More Common In The Population Over Time.

Evolution
A Change In The Heritable Characteristics Of Populations Over Generations, Driven By Processes Such As Natural Selection, Mutation, And Genetic Drift.

Food Web
A Network Of Interconnected Food Chains In An Ecosystem That Shows The Many Feeding Relationships Among Organisms.

Food Chain
A Linear Sequence Showing How Energy And Nutrients Pass From Producers To Various Levels Of Consumers In An Ecosystem.

Decomposer
An Organism Such As A Fungus Or Bacterium That Breaks Down Dead Organic Matter And Recycles Nutrients Back Into The Ecosystem.

Consumer
A Heterotrophic Organism That Obtains Energy By Eating Other Organisms, Including Producers And Other Consumers.

Producer
An Autotrophic Organism Such As A Green Plant Or Alga That Produces Organic Molecules Through Photosynthesis And Forms The Base Of A Food Chain.