EcologyEcology

E 2.1 Abiotic FactorsE 2.1 Abiotic Factors

Abiotic FactorsAbiotic Factors

Living organisms depend on one Living organisms depend on one another and their environmentanother and their environment

Biotic – features of the environment Biotic – features of the environment that are alive or once alivethat are alive or once alive

Abiotic – non-living physical features Abiotic – non-living physical features of the environmentof the environment

Abiotic FactorsAbiotic Factors

1. Air1. Air Atmosphere – air that surrounds the EarthAtmosphere – air that surrounds the Earth 78% of the atmosphere is Nitrogen while 78% of the atmosphere is Nitrogen while

21% is oxygen21% is oxygen Photosynthesis – use carbon dioxide and Photosynthesis – use carbon dioxide and

water to make sugarwater to make sugar Cellular respiration – breakdown of sugar Cellular respiration – breakdown of sugar

with oxygen to make carbon dioxide and with oxygen to make carbon dioxide and waterwater

Abiotic FactorsAbiotic Factors

2. Water2. Water Most living things are made of Most living things are made of

50% to 95% water50% to 95% water 3. Soil3. Soil Soil is mainly made of minerals Soil is mainly made of minerals

and small rocks but it also has and small rocks but it also has materials that used to livematerials that used to live

Abiotic FactorsAbiotic Factors

4. Sunlight4. Sunlight Helps photosynthesis take placeHelps photosynthesis take place 5. Temperature5. Temperature Altitude and latitude change temperatureAltitude and latitude change temperature

Abiotic FactorsAbiotic Factors

6. Climate – average weather conditions 6. Climate – average weather conditions over timeover time

Includes rainfall, precipitation, Includes rainfall, precipitation, temperature, and windtemperature, and wind

Wind is created by the sun and convectionWind is created by the sun and convection Rain-shadow effect may cause one side of Rain-shadow effect may cause one side of

the mountain to have forests while the the mountain to have forests while the other side is desert.other side is desert.

Abiotic FactorsAbiotic Factors

BioticBiotic AbioticAbiotic AirAir WaterWater SoilSoil SunlightSunlight TemperatureTemperature ClimateClimate