28. Which of the following is an accurate statement about ecosystems? a. Energy is recycled through the trophic structure. b. Energy is usually captured from sunlight by primary producers, passed to secondary producers in the form of organic compounds, & lost to detritivores as heat. c. Chemicals are recycled between the biotic and abiotic sectors, whereas energy makes a one way trip through the food web and is eventually dissipated as heat. d. There is a continuous process by which energy is lost as heat, and chemical elements leave the ecosystem through runoff. e. A food web shows that all trophic levels may feed off each other.

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Communities and Ecosystems

Ecology contains two words: Eikos means dwelling, and logy means to study, so the combined meaning is studying habitat or living.