Relationships
Cycles
Changes in ecosystems
Sustainable environments
100

In this type of symbiosis, one organism benefits while the other is harmed.

Parasitism

100

These are the three parts of the water cycle.

Evaporation, condensation, precipitation

100

A stable community or species that is not easily replaced.

Climax community

100

(POPSICLE)

This describes a species that no longer exists.

Extinct

200

This symbiotic relationship benefits both organisms involved.

Mutualism

200

(POPSICLE)

These organisms, such as fungi and bacteria, help recycle nutrients back into the ecosystem.

Decomposers

200

When life appears in places where no life has existed before.

Primary succession

200

This describes a species whose numbers are declining

Threatened

300

(POPSICLE)
This relationship occurs when two species live closely together and at least one benefits.

Simbiosis

300

This process is how producers make their own food using sunlight, water, and carbon dioxide.

Photosynthesis

300

The first species to arrive to an area without life, usually lichen.

Pioneer species

300

This is the measure or land that is required to support your activities.

Ecological footprint

400

This term describes a community of living and non-living things that interact with each other in a specific environment.

Ecosystem

400

This term describes organisms that feed on the remains of dead animals.

Scavengers

400

When life appears again in destroyed or disturbed areas that previously had life.

Secondary succession

400

What caused a drop in peregrine falcon populations?

Pesticides causing eggs to thin and crack

500

These non-living factors, such as water, temperature, and sunlight, influence an ecosystem's environment.

Abiotic factors

500

This is the source of energy that all living things depend on. 

The Sun

500

(POPSICLE)

When different species or organisms require the same space, food, or water.

Competition

500

List 3 species that were accidentally affected by spraying DDT to kill mosquitos.

wasps, geckos, cats