Succession
Energy
Interactions
Populations & More
Cycles
100

The first plant species to invade an area where succession has started. Often small and fast growing.

What are pioneer species?

100

As energy moves up through trophic levels, it does this, with only this amount of energy being passed on.

What are decreases and 10%?

100

An example of this would be a wasp laying its eggs in a fig while also pollinating the fig.

What is mutualism?

100

All of the birds, worms, bacteria, squirrels, trees, grass, foxes, and shrubs in an area comprise this.

What is a community?

100

Water is returned to the atmosphere through these two processes.

What are transpiration and evaporation?

200
A type of succession that occurs where there has previously been growth.

What is secondary succession?

200

All energy in an ecosystem ultimately comes from this.

What is the sun?

200

An example of this would be a school of fish swimming together to ensure safety in numbers.

What is cooperation?

200

All of the birds, worms, bacteria, squirrels, trees, grass, foxes, shrubs, soil, air, water, and sunlight in an area comprise this.

What is an ecosystem?

200

Carbon is removed from the atmosphere through this process.

What is photosynthesis?

300

A type of succession where there has been no previous growth, only bare rock.

What is primary succession?

300
Otherwise known as producers and consumers, these organisms produce their own food or eat other organisms, respectively.

What are autotrophs and heterotrophs?

300

Head lice are an example of this.

What is parasitism?

300

This estimation method is better suited for fast moving or clumped population.

What is mark and recapture?

300

All living things do this, releasing carbon into the atmosphere.

What is respiration?

400

This pioneer species invades areas of bare rock, for example, after volcanic activity.

What are lichen or mosses?

400

Most of the energy in an ecosystem is lost in this form.

What is heat?

400

No two species may share this in an ecosystem without one being driven to extinction.

What is a niche?

400

A population of slow/non-moving, randomly or evenly distributed organisms would be a good suitor for this type of population estimation.

What is random sampling?

400

Atmospheric nitrogen is converted into a usable form by this bacteria and this process.

What are nitrogen fixing bacteria and nitrogen fixation?

500

This is a stable, end result of succession in which the species in the community no longer change.

What is a climax community?

500

The lowest trophic level is always occupied by this group of organisms.

What are producers?

500

Lynx and hare are an example of this type of interaction.

What is predation?

500

The levels of organization from species to biosphere.

What is species, population, community, ecosystem, biome, and biosphere?

500
Atmospheric nitrogen is released back into the atmosphere by this bacteria and this process.

What are denitrifying bacteria and denitrification?

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