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Ecosystem Basics
Energy Flow/ Cycles in Ecosystems
Natural Changes in Ecosystems
Relationships
100

The place where an organism calls home

Habitat

100
Chemicals required for growth and other life processes.
Nutrients.
100
The process where individuals with advantages are better able to reproduce and pass along their traits.
Natural Selection.
100
When two or more individuals desire the same resource.
Competition.
200
All the organisms within an ecosystem that have similar characteristics and can reproduce with each other.
Species.
200

This nutrient is a greenhouse gas that has been increasingly rapidly (through combustion) since the Industrial Revolution.

Carbon.

200

What causes secondary succession?

Some disaster has come through and eliminated life, basically leaving only soil behind.

(Typically a forest fire)

200
Remora fish attach themselves to sharks and eat the scraps of food that are left over from the shark’s meal. This is an example of ___________.
Commensalism.
300
All the members of a certain species within an ecosystem.
Population.
300
The breakdown of dead organic material.
Decomposition or biodegradation.
300
The first organisms to survive and reproduce in an area after primary and secondary succession have started are called ___________.
Pioneer Species
300
The relationship between organisms when one hunts and consumes the other

Predation

400

The term that represents all of the different species that live together in a habitat

Community

400
Animals that eat both plants and animals.
Omnivores.
400

The pioneer species for primary succession are. . .

Lichens and mosses

400

What is the difference between INTERspecific and INTRAspecific competition

INTERspecific - competition between different species

INTRAspecific - cometetion between the SAME species

500

The term for all biotic AND abiotic organisms/ features represented in an area

Ecosystem

500

The term for all living things on earth

Biosphere

500

The pioneer species for secondary succession are. . 

Grasses and weeds.

(Although mosses and lichens will also typically be present)

500
The relationship when one organism is benefits, while the other is harmed (but not killed)

Parasitism