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Environmental Science Hannah by Mind Map: Environmental Science Hannah
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Environmental Science Hannah

Levels of Organization


A living thing example: A fish


A group of similar organisms Example: A school of fish


Many different species of organisms living together. Example: Fish, seaweed, and plankton


Where a group of biotic and abiotic factors that interact with one another. Example: A pond, coral reef, and safari.


A geographical area with many ecosystems with a specific climate Example: Rainforest, tundra, marine, desert, coniferous forest, deciduous forest, fresh water, and savanna.



Temperate Deciduous Forest

Pennsylvania is a temperate deciduous forest biome.

Coniferous Forest






Food Chains/Food Webs

A food chain and a food web show where the energy is flowing when prey is consumed. The difference between a food web and a food chain is that a food chain is one direct line from the producer to a certain level consumer.  A food web shows the many different food chains altogether and shows an organisms prey and predators.

Trophic Levels

Look at the link and attachment for a definition of trophic levels.

Biotic Factors

A biotic factor is something that is living, was living, or part of a living thing.

Abiotic Factors

An abiotic  factor is non-living and have never been living, nor will never be living.


The variety of organisms on earth and in an ecosystems. Biodiversity saves species because if there was a certain species that had a disease going through an ecosystem, the disease could be stopped within a short time. Causes of biodiversity are: human destroying environments, humans over-hunting and over-fishing species, and introducing exotic species. The loss of biodiversity can lead to losing genes that might have been useful for things including nutrition and medicine.

Genetic Biodiversity

Species have different genes to differentiate between the species.

Species Biodiversity

Different types of species

Ecosystem Biodiversity

Different ecosystems

Hot Spots

Hot spots are where more than half of Earth's species are found.

Endangered/Threatened Species

Endangered species are species that are in danger of extinction.  Threatened species are likely to become endangered in the near future. Human development, the introduction of foreign species, and over- hunting and over-fishing species all lead to endangerment and species being threatened.

Indicator Species

Indicator species are the plants and animals that demonstrate some distinctive aspect of the character quality of an environment.

Ecological Succession

Ecological Succession is a process in which the communities of an ecosystem overtime. We would need ecological succession on Earth because without it, everything would die and nothing would regrow - therefore, making Earth barren and having no life.

Primary Succession

Primary Succession occurs in places where an ecosystem has never existed. This means that an ecosystem has begun on barren land that has never been developed before.  This can occur with seeds washing ashore, seeds being carried by wind, or seeds being carried by animals.

Secondary Succession

Secondary succession begins in an ecosystem when something has disturbed or destroyed the natural community.  Basically, it is regrowing what was already there. Natural disasters that can set secondary succession are tornadoes, floods, fire, volcanic eruption, and drought.

Climax Community

The climax community is the time when there is the most biodiversity.  This means, that along with small shrubs, there are large trees and many other species.


Carrying Capacity

The number of individuals of species that an ecosystem can support.  It cannot support more than the carrying capacity.  Because of limiting factors, each ecosystem has a limited capacity for growth connected to its carrying capacity.

Limiting Factors

Limiting factors are conditions of the environment that limit the growth of a species.  The biotic an abiotic factors that prevent the continuous growth of a population. Populations increase if they had unlimited resources available - but have factors that limit their increase.

Population Growth Rate

The population growth rate is the rate in which a population grows in a year.  It is measured by births-deaths.  Lately, our growth rate is increasing because our births outnumber deaths.  This is due to the rise of technology, medications, and the fact that we can avoid death for as long as possible with our technology.

Exponential Growth

In population, exponential growth shows the amount the population has rapidly increased at one point in time.


An S-curve has the beginning of a J-curve but then (speaking in population) the population will level off to form an S.

Water Pollution



Water purification



Natural Resources

Renewable Resource

Nonrenewable Resource