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- One celled organism
- Examples: plant or animal cell, bacteria, euglena


- Multi-celled organism
- Examples: human, plant, fungi


- Organism with no nucleus or lacking a nucleus
- Example: Bacterial cell

Prokaryote or Prokaryotic

- Organism with a nucleus
- Examples: human, fungi, plants

Eukaryote or Eukayotic

- An organism that makes its own food
- Example: plants

Autotroph or Autotrophic

-Part of planet earth's outer shell
- including air, land, and water— within which biotic (life) processes occur


- All the living and nonliving things that interact in an area
- Example: Owls, prairie dogs bison, grass, dirt, climate


- Living or once was living part of an ecosystem
- Examples: Organisms, leafs

Biotic Factors

- Nonliving part of an ecosystem
- Examples: water, air, sunlight

Abiotic Factors

- A living thing
Examples: human, sunflower, puffball mushroom


- A group of similar organisms whose members can produce other (fertile) offspring
- Examples: Golden Retrievers, tuna, oak trees


- All the members of one species in a particular area
- Examples: pack of wolves


- All the different populations that live together in a area
- Example: Wolves, bison, elk, and rabbits


- Place where an organism lives (home) and that provides the things the the organism needs
- Obtains food, water and shelter


- An organism's particular role in an ecosystem or how it makes its living
Examples: teacher- teaches lion - carnivore vulture - scavenger


- Environmental factor that prevents a population from increasing
Examples: food, space, and weather conditions

Limiting Factors

- Number of individuals in a specific area
- Example: class room size of 32 students

Population Density

What occurs when:
- Organisms that enter the population or leave the population
- Leading factors: Birth or immigration; death or migration

Changes in population size

- An organism that cannot make its own food
- Examples: humans, fungi

Heterotroph or Heterotrophic

Another name for Predator-prey


- An adaptation that makes it a better predator
- Examples: Sharks powerful jaws, owls ability to hunt at night

Adaptations (Predator)

- An adaptation that makes it harder to be a prey
Examples: Mimicry, camouflage, protective coverings

Adaptations (Prey)

- Mutualism, Commensalism, Parasitism

3 symbiotic relationships

Example of Symbiosis (symbiotic relationship) involving a Tapeworm and Human


Example of Symbiosis (symbiotic relationship) involving Spanish Moss (flowering epiphyte) growing harmlessly on an Oak tree


Example of Symbiosis (symbiotic relationship) involving a Redbilled Oxypecker eating bugs off the back of a Rhinoceros


Example of Symbiosis (symbiotic relationship) involving a mutualistic relationship between fungus and Algae. Importantant in breaking down rock into soil


An autotroph that can make its own food
Examples: Plants/Trees/Algae


Type of Heterotroph that can't make its own food


Consumer that eats only plants


Consumer that eats only animals


Consumer that eats both plants and animals


Carnivore that feeds on dead organisms


Organisms that break down wastes and dead organisms


Three major organisms that break down wastes and dead organisms

Fungi, Bacteria, Earthworms

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