Topic 7 Abiotic And Biotic Factors Flashcards
What are abiotic factors
Moisture level
Light intensity
temperature
carbon dioxide level (for plants)
wind intensity and direction
oxygen level (for aquatic animals)
soil pH and mineral content 
What can changes in abiotic factors do to the population
Changes can affect the size of populations in a community
this means they can also affect the population sizes of other organisms that depend on them
What are biotic factors
Living factors
Examples of biotic factors
New predators arriving
Competition -One species compete another so that numbers are too low to breed
New pathogens
Availability of food
What affects can biotic factors have on environment
A new biotic factor can change the size of population and a community which can I have a knock on effect because of interdependence
