​What we will learn about...

• ​what is an ecosystem?

• ​biotic vs abiotic

• ​intro to food chain and food webs

​What is an ecosystem?

• ​a geographic area and all living and non-living things within it

• ​OR biotic and abiotic factors

• ​can be very large or very small

• ​includes everything, from larger organisms, to tiny bacteria, to temperature, sun, wind, and rain

​Biotic vs Abiotic Factors

• ​Biotic = living

  • ​plants, animas, bacteria

• ​Abiotic = non-living

  • water, soil, atmosphere

​Food Chains and Food Webs

• ​Food chain = who eats whom

• ​Food web = all food chains in the ecosystem

• ​All organisms occupy a specific trophic level or position in the food chain or food web