1. Abiotic Factors Ch. 20 Sect. 1

2. What is an ecosystem?
All organisms need both living (biotic) and nonliving (abiotic) things to survive.
Ecosystem – is all the living and non living things in a given area.
Biotic factors – are the living things in an ecosystem. Ex. Birds, frogs, plants, humans, bacteria, fungi,
Abiotic factors- are the nonliving things in an ecosystem. Ex. Water, air, sunlight.
Biotic factors and abiotic factors depend on each other.

3. What are the nonliving parts of an ecosystem?
Sun is the source of almost all energy on Earth. Has 2 abiotic factors: climate and temp.
Climate describes average weather conditions in an area over time. Includes: temperature, moisture, wind, precipitation.
Temperature describes how hot or cold something or an area is.
Water – All life on Earth require water.
Atmosphere – the layer of gases that surround the Earth.
Soil – bits of rock, water, air, minerals and remains of living things.