transfer of energy and matter Flashcards
1
Q
ecosystems
A
complex units with many living and non-living things sharing a space
2
Q
open system
A
where energy can be exchnaged
3
Q
closed system
A
cant transfer energy to its surroundings
4
Q
consumer
A
gets its energy from eating producers
5
Q
producer
A
organisms which create its own food and energy
6
Q
saprotrophs
A
organisms which feeds on decaying organic matter
7
Q
autotrophs
A
producers- use external energy sources to synthesise carbon compunds from inorganic substrates
8
Q
heterotrophs
A
consumers- synthesise organic compounds by taking in and digesting carbon compunds
9
Q
biomass
A
total mass of a group of a organisms within one trophic level
