Summary Topic 5 Ecology

Ecology
Biotic
and Biotic Abiotic
Abiotic

factors
S.I units -
nutrient
cycles .




Foodchain e Biotic part

factors :
-competition
-predation

Population number of he
organisms of
-

same

species


Community interacting populations
-




Riche-role of an
organism in an
ecosystem

Egestion -


undigested food
Excretion-metabolic Waste .




Ecosystem-interaction of biotic and abiotic factors
Habitat -



physical and chemical characteristic

Abiotic
factors
Edaphic factors
pH of soil
-




-

humus (minerals) decomp osing material which
also helps stick soil together and allow better drainage .




-
moisture level2 moisture retention

-




Oxygen conc & rate of decomposition

-

soil dept anchorage