Study of an ecosystem Flashcards
Organism adaptation and its importance
A structural feature change
e.g Natural selection
To increase the chance of survival
Types of adaptation
Structural - Change in physical structure
Competitive -
Behavioural - Change in the way it acts
Abiotic Factors (non-living)
Water
Humidity
Frost
Qualitative survey
Type of organisms present
Quantitative Survey
Numbers of individuals
Biotic factors (Living Factors)
Animals
Plants
Bacteria
Habitat
Where an organism lives
Community
all the organisms in an area
Population
All the organisms of a species living in an area
Niche
Role of an organism in its ecosystem
Biosphere
The part of the earth where life can exist
Factors that influence the human population
War: High death rate
Famine: High death rate
Disease: Decrease in population
Conservation
Management of the environment
Ecological pyramids
Method of comparing different communities in order of different trophic levels