1. ECOLOGY

2. Competition – two species share a requirement for a
limited resource  reduces fitness of one or both species

3. Predation – one species feeds on another  enhances
fitness of predator but reduces fitness of prey
herbivory is a form of
predation

4. Symbiosis – two species live together  can include
parasitism, mutualism, and commensalism

5. Parasitism – one species feeds on another  enhances
fitness of parasite but reduces fitness of host

6. Mutualism – two species provide resources or services
to each other  enhances fitness of both species

7. Commensalism – one species receives a benefit from
another species  enhances fitness of one species; no
effect on fitness of the other species

8. Living part of the environment
Biotic
Abiotic
Sun provides energy for living things
Ecology – the study of the interactions b/tw organisms & their environment
Nonliving part, water, soil, light, etc.
2 Parts – Biotic and Abiotic
Prey Predator
Symbiosis
Mutualism
Commensalism Parasitism
Consumers
An organism that eats another organism
Part of Earth where life exists
An organism that is eaten by another organism
biosphere
Herbivore – A consumer that eats plants Ex – prarie dog
Carnivore – A consumer that ears animals.
Omnivore – a consumer that eats a variety of organisms
Scavenger – an animal that feeds on the bodies of dead animals
Organisms and their nonliving environment
A close, long term relationship between 2 or more species
ecosystems
communities
Both species benefit. (a type of symbiosis)
All the pops of different species
populations
Same species
One species benefits and one is not affected
One species benefits and one is harmed
Individual organisms
Niche
Habitat
An organism’s way of life (its job)
producers
consumers
carnivores
herbivores
The environment where an organism lives
Producer consumer decomposer
Organisms that eat producers or other organisms (see list on the left)
Bacteria and Fungi that breakdown the remains of dead animals
Organism that uses sunlight
To make food (direct)