2.2 - COMMUNITIES AND ECOSYSTEMS Flashcards
1
Q
What is biomass?
A
The mass of organic material in organisms or ecosystems (per unit area).
2
Q
Describe photosynthesis
A
Process by which a plant converts:
carbon dioxide + water –> glucose + oxygen
3
Q
Describe respiration
A
conversion of:
glucose + oxygen –> carbon dioxide + water
“Wasted” energy is lost as heat.
4
Q
Describe trophic levels
A
It is the position an organism occupies in its food chain. Producers form the first trophic level, and decomposers feed at every level of the food chain.
