Biotic vs Abiotic
Energy Flow
Food chains & food webs
relationships in ecosystems
Ecosystem roles
100

A tree is a 

biotic 

100

Organisms that make their own food are called this

producers

100

one path of energy flow

food chain

100

When two organisms both benefit

mutualism

100

an organism's role or job is its 

niche

200

Water, temperature and sunlight are

abiotic

200

The main source of energy for most ecosystems 

the sun 

200

this shows many connected chains

what is a food web

200

when two organisms fight over the same resource

competition

200

A beaver building dams is part of its 

niche

300

A Skeleton is 

biotic

300

A rabbit that eats grass is this type of consumer

Primary consumer

300

in a food web, arrows shows this

direction of energy flow

300

A hawk eating a rabbit is an example of this relationship

predation

300

all members of one species in an area 

population

400

A drought mainly affects which type of factor first: biotic or abiotic?

Abiotic

400

Grass-> mouse-> snake-> hawk

the snake is this type of consumer

secondary consumer

400

if the mouse population decreases, name one organism that would be affected and explain how

Snakes or hawks that eat mice

400

in predation, this organism does the hunting

predator

400

all living organisms ( even of different species) 

community

500

Explain why soil can be considered both biotic and abiotic

soil contains nonliving and living properties

500

Explain what would happen to a food chain if all producers disappeared

the food chain would collapse

500

Why are food webs more accurate than food chains

organisms eat more than one thing

500

Explain how competition can limit population size

limited food or resources

500

A flood changes habitats and food availability. Explain how this could affect community 

it could change population size or food webs or survival of a species

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