Download 13.2 Biotic and Abiotic Factors Chemosynthesis

13.2 Biotic and Abiotic Factors
Every ecosystem includes both living and nonliving
factors.
13.2 Biotic and Abiotic Factors
Biodiversity - the variety of living things in an ecosystem.
• Rain forests contain more than 50% of the world’s species.
13.2 Biotic and Abiotic Factors
Biotic factors are living things.
– plants
– animals
– fungi
– bacteria
plants
13.2 Biotic and Abiotic Factors
Abiotic factors are nonliving things.
– moisture
– temperature
– wind
– sunlight
– soil
– water
sunlight
moisture
13.2 Biotic and Abiotic Factors
Producers (autotrophs) – make their own food.
• get their energy from non-living resources. (sun)
• provide energy for other organisms in an ecosystem
13.2 Biotic and Abiotic Factors
Consumers (heterotrophs)- organisms that get their energy
by eating other living or once-living resources.
13.2 Biotic and Abiotic Factors
Chemosynthesis – process in which an organism forms
carbohydrates using chemicals instead of light.
carbon dioxide + water +
hydrogen sulfide + oxygen
sugar + sulfuric acid