1. 16.1 Teacher Notes Interactions of Living Things

2. An environment has two parts:
ecology – the study of the interactions between organisms and their environment
An environment has two parts:
biotic – living organisms
abiotic – nonliving, the physical factors that affect living organisms such as water, soil, light, & temperature

3. 6 levels of environmental organization:
individual – a single living thing
population – two or more organisms of the same species that live together in the same area at the same time
community – two or more populations of different species that live and interact in an area
ecosystem – two or more populations in their abiotic environment (water, soil, light, temperature)
biome – the climate affects the plant community which affects the animal community (rainforest, desert)
biosphere – the part of the Earth where life exists