Systems
2.1 Species
Sustainability and Biomes
2.2 Ecosystems
Soil
100

Occurs when energy or matter flows and changes location but does not change its state

Transfers 

100

A group of organisms that share common characteristics and that are able to reproduce and produce fertile offspring

Species 

100
All people affected by a situation or issue 
Stakeholders 
100

Organisms at the bottom of the food web. These are plants or algae. Use photosynthesis

Producers 

100
Soil horizon that is rich in decaying plant and animal matter. Typically at the top 

Organic Layer (O Horizon) 

200

Value system that believes that humans must sustainability manage the global system

Anthropocentric 

200

a relationship between two species in which both species benefit. Ex: bees and flowers 

Mutualism 

200

The largest biome that takes up 70% of the Earth

Aquatic 

200

a group of populations living and interacting with each other in a common habitat 

Community 

200

The movement of broken-down particles from one location to another. Due to wind, water or gravity 

Erosion 

300

a system in which both matter and energy are exchanged across boundaries

Open

300

a relationship between two species in which one species lives in or on another gaining food from it. Example: Deer Tick

Parasitism 

300

1 of the 3 cells of the Tri-Cellular model that is near the equator and circulates precipitation and temperature

Hadley 

300

a model that shows relationships between all of the plants and animals in a community. It shows how different food chains interact and overlap 

Food Web 

300

3 Types of weathering 

Chemical, Biological, Physical 

400

When the output of a process inhibits or reverses the operation of the same process in such a way as to reduce change. Counteracts deviation

Negative Feedback Loop 

400

Curve that has no limiting factors. Nothing to limit the population 

J curve (exponential growth) 

400

3 pillars of sustainability 

Economic, Environmental, Social 

400

Build up of non-biodegradable pollutants within an organism

Bioaccumulation 

400

Movement of water through soil 

Percolation 

500

5 disturbances that can happen to an ecosystem

Fires, drought, flooding, pollution, deforestation, urbanization, hurricanes, windstorms, climate change, invasive species etc. 

500

the maximum number of organisms of a single species that an ecosystem can support 

Carrying capacity 
500

The area of land and water required to sustainably provide all resources at the rate of consumption and the assimilation of all wastes at the rate of production by a given human population

Ecological Footprint 

500

The increase in concentration of non-biodegradable pollutants along a food chain

Biomagnification 

500

This soil horizon contains minerals leached from above. It has fewer nutrients.

Subsoil (B Horizon) 
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