enviro 20 feedback loops quiz study

Front

why are decomposers important?

Back

they break down dead plants and animal matter. Recycling nutrients back into the ecosystem.

Front

examples of negative feedback loops

Back

a thermostat, or predator-prey relationships

Front

define negative feedback loops

Back

Regulates and stabilizes the environment, its relationships and maintains a state of homeostasis.

Front

are positive feedback loops common?

Back

NOT in natural environments, but common in areas that have been changed by people.

Front

4 examples of a positive feedback loop

Back

1. 1. erosion

2. 2. melting arctic sea ice

3. 3. agriculture and overpopulation with ppl

4. 4. fruit ripening

Front

what is a positive feedback loop?

Back

NOT POSITIVE!! instead of stabilizing the environment, it is a self perpetuating drive towards an extreme change, for the worse.

Front

Tell me the least productive aquatic ecosystem

Back

an open ocean.

Front

what is the most productive aquatic ecosystem?

Back

estuaries

(a water passage where the tide meets a river current)

Front

list 3 LOW productivity terrestrial ecosystems

Back

1. 1. extreme desert

2. 2. desert scrub

3. 3. tundra

Front

list 3 HIGH productivity terrestrial ecosystems

Back

1. 1. swamps and marshes

2. 2. rainforest

3. 3. temperate forest