Biology quiz ecological succession, Material cycle, energy flow 4.23

Ecological Succession

Process over time of organisms in a ecological community

Primary Succession

Area that is new with no soil

Pioneer Species

very first organisms to grow and change the environment

They break down rocks to make new soil

Secondary Succession

Area where an ecosystem once existed but was destroyed

Climax Community is…

the highest level of biodiversity

Autotrophs (primary)

can produce their own food using photosynthesis

Heterotrophs (consumers)

rely on other organisms for food

Decomposers

Eat on dead organisms/bacteria and fungi

Individual organisms

Any living thing

Species

Type of organisms that cannot breed outside their group

Population

group of organisms of specific species that live in a specific area

Community

a population of living organisms of different species

biodiversity

Many different types of living things together in one place

Ecosystem

More than a community, living or dead

Biome

set of ecosystem with similar characteristics

Biosphere

Sum of all ecosystem

Nitrogen Cycle

• present in all living organisms

• Moves through food chains

• Recycled when organisms die

Carbon cycle

• present in all living organisms

• Carbon is recycled when a organisms dies

Water cycle

• Describes how water moves between different locations

• Cycle is completed once the water changes state

Carbon - oxygen cycle (graph)

Carbon dioxide in the air → Photosynthesis (autotrophs) → Oxygen in air → Burning fossil fuels and Respiration

Nitrogen cycle (graph)

Nitrogen waste/dead organisms → decomposers → Nitrites (plant fertilizers) → plants → eaten by animals