Ecosystems
A system of living and non-living things interacting in an area.
Ecosystem
Organisms that make their own food.
When one organism hunts and eats another.
Predation
The main source of energy for most ecosystems.
The Sun
A group of different populations living and interacting in the same area.
Community
Non-living parts of an ecosystem like sunlight, water, and temperature.
Abiotic factors
Organisms that eat other organisms
Consumers
Both organisms benefit from this relationship.
Symbiosis or mutualism
Energy stored in food molecules.
Chemical Energy
The gradual buildup of toxins in an organism over time.
Bioaccumulation
A large region with a specific climate and types of organisms.
biome
The arrows in a food chain represent this.
Flow of Energy
One benefits, the other is harmed.
Predatory or parasitism
Process of converting light energy to chemical energy by plants.
Photosynthesis
The increase in toxin concentration as you move up a food chain.
Biomagnification
The area between two ecosystems with greater diversity.
Ecotone
A diagram that shows all feeding relationships in an ecosystem.
Food web
Organisms competing for the same limited resource.
Competition
Only about this percent of energy moves to the next trophic level.
10%
The role of an organism in transferring energy by breaking down dead matter.
Decomposer
Give two examples of ecosystems.
various
Why can’t food chains have many trophic levels?
Not enough energy to be transferred to the top levels.
Location of gas exchange on a leaf.
Stomata
Energy is lost at each level mainly as this.
Heat
A species is introduced into a new environment, spreads quickly, and harms native species because it has no natural predators. This species is:
Invasive Species