energy flow Flashcards
1
Q
Photoautrophic
A
using sunlight as a source of energy (all green plants and some bacteria)
2
Q
Energy flow
A
Energy enters most ecosystems as sunlight, where it is converted into chemical energy by producers. Chemical energy is stored in carbon compounds and transferred to heterotrophs via feeding
3
Q
Trophic levels
A
The position an organism occupies within a feeding sequence
4
Q
food chains
A
A food chain shows the linear feeding relationships between species in a community
5
Q
energy transformation loss
A
When energy transformation takes place it is never 100% efficient.
The higher up the trophic level the more energy is lost
6
Q
Biomass
A
total mass of a group of organisms
