Ecosystems
This contains all the nonliving and living parts of the environment in a given area
Habitat
This is a place within an ecosystem that provides the biotic and abiotic factors an organism needs to survive and reproduce
Biotic
Living
Abiotic
Nonliving
Population
All the organisms of the same species that live in the same area at the same time
Community
All the populations living in an ecosystem at the same time form a
Niche
This is the way a species interacts with abiotic and biotic factors to obtain food, find shelter and fulfill other needs
Predation
This is the art of one organism, the predator, feeding on another organism, its prey
Symbiosis
This is a close long-term relationship between two species that usually involves an exchange of food or energy.
Mutualism
This is a type of symbiosis where both species benefits from the relationship
Commensalism
This is a type of symbiosis where only one species benefits from the relationship and the other is neither harmed nor benefited
Parasitism
This is a type of symbiosis where one species benefits and the other is harmed
Competition
This describes interactions between two or more organisms that need the same resource at the same time
Carrying capacity
This is the largest number of individuals of one species in an ecosystem can support over time
Extinction
This is when all the members of a population die or move away from an area or from earth
Parasitism and mutualism
Describe two ways in which two species might interact with eachother
When one species dies off the organism that needs that species as a food source will die off as well.
Explain how the extinction of one population can affect other populations in the same community
The weather causes food and resource changes
The number of mice in a grassland community rises every summer and falls every winter. What could cause the changes in population size?
Shark and remora
Give an example of symbiosis:
Clown fish and an enename
Give an example of mutualism:
Cow and egret
Give an example of commensalism:
Human to mosquito
Give an example of parasitism:
Producers
These are organisms that use an outside energy source, such as the sun, and produce their own food
Consumers
These are organisms that cannot make their own food
Herbivores
Eat producers
Omnivores
Eats producers and consumers
Carnivores
Eat herbivores, omnivores and other carnivores
Detritivores
They consume the bodies of dead organisms and wastes produced by living organisms
Scavengers
These are detritivores that eat the bodies of animals killed by carnivores or omnivores
Decomposers
These are microscopic detritivores
Food chain
This is a simple model that shows how energy moves from a producers to one or more consumers through feeding relationships
Food web
This is a model of energy transfer that can show how the food chains in a community are interconnected
Energy pyramid
Is a model that shows the amount of energy available in each link of a food chain
Nitrogen cycle
This shows how protein is produced