An ecosystem includes all The different organisms

Living in a certain area, alongWith their physical environment.

An ecosystem is composed of Both biotic factors and

Abiotic factors.

Biotic factors are the living Parts of an ecosystem…

Animals-Plants-Microorganisms

Abiotic factors are the Nonliving parts of an ecosystem…

Temperature-Sunlight-Water

An organism is one individualLiving thing.

A species is a group of organismsThat are able to produce Fertile offspring, and thatShare common genes and

Therefore resemble each other.

A population is a group of Individuals of the same

Species living in a Particular place.

A community is a group of Interacting populations of

Different species.

An organisms niche is its way Of life.

The actual place an organismLives is called its habitat.

In predation, one organismKills and eats another.

The organism that is eaten Is the prey and the organism That does the eating is called

The predator.

Predators tend to feed on youngAnd weak individuals and

Often limit the size of Prey populations.

Competition occurs when two Or more organisms of theSame or different species Attempt to use the same

Limited resource.

A parasite is an organism thatLive in or on another

Organism and feed on it Without it killing it.

Mutualism is a cooperative Partnership between 2 species

In which both benefit.

Commonsalism is a relationshipIn which one species benefits and

The other is neither harmed Nor helped.

Darwin used the term natural Selection to describe the

Unequal survival and Reproduction that results

From the presence or Absence of particular traits.

A change in the genetic Characteristics of populationsFrom one generation to the Next is known as evolution.

An adaptation is an inheritedTrait that increases an

Organisms chance of survivalAnd reproduction in a Certain environment.

Coevolution is when two Or more species evolve in Response to each other.

The irreversible disappearanceOf population or a species

Is called extinction.