Presentation on theme: "Biotic and Abiotic Factors SC.912.L.17.7. What is an ecosystem? The biosphere is the part of the Earth that contains all the living things on the planet."— Presentation transcript:
What is an ecosystem? The biosphere is the part of the Earth that contains all the living things on the planet. Each ecosystem that we study is a part of the biosphere. A system is a group of things that interact with one another.
What are biotic factors? The organisms that make up the living part of an ecosystem are called biotic factors. An organism depends on other biotic factors for food, shelter, protection, and reproduction.
What are abiotic factors? Nonliving things that we find in an ecosystem are called abiotic factors. Abiotic factors have an effect on the type and number of organisms living in an ecosystem. Some abiotic factors include soil, water, temperature, and sunlight.
Ecosystems do not necessarily have clear boundaries due to biotic and abiotic changes can change daily as things move from one ecosystem to another Biotic: migration, seed dispersal Abiotic: flood, erosion, drought