Ecology is studied at different levels The levels increase in complexity Populations are a group of individuals of the same species Communities include populations of multiple species that interact Ecosystems include the community and the abiotic factors
Ecology is studied at different levels The levels increase in complexity Biomes are similar ecosystems due to similar climates and geology The biosphere is all ecosystems on Earth – all living and non-living things
Ecosystem Communities of organisms with their physical environment. Organisms connect through the flowing of energy and the cycling of materials.
Ecology The study of interactions between organisms and the environment An ecosystem includes abiotic (nonliving) and biotic (living) factors
Organisms in an ecosystem are classified by source of energy Producers are autotrophs that make their own food by capturing energy (photosynthesis) Consumers are heterotrophs that eat other organisms for nutrients and energy Decomposers and detritivores are heterotrophs break down organic matter from dead organisms
Energy through ecosystem Energy enters through ecosystem through producers Energy passes through from producers to consumers and decomposers Much of the energy is released as heat
Nutrients through ecosystem Nutrients are the chemicals organisms need Nutrients are recycled through ecosystems
Producers are the energy base of all ecosystems Since producers capture energy from an external
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