Biologists identify four major components in an ecosystem: producers, consumers, decomposers, and the abiotic environment. what links them?

Flows of nutrients and energy

Flows of nutrients and energy link the producers, consumers, decomposers, and the abiotic environment in an ecosystem. Within an ecosystem, the producers obtain energy from the abiotic environment (sunlight). Consumers get nutrients and energy by feeding on other organisms. Decomposers get nutrients and energy by feeding on dead organisms or organic materials.

not only is it colder, it also becomes darker, less salty, and more dense.