Multiple choice

Ecosystem is

  1. can be open or closed

  2. always closed

  3. both open and closed, depending on biomass

  4. both open and closed, depending on community
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are two types of ecosystems, closed and open. Closed ecosystems are ones that do not have any inputs (exchanges of energy from the surrounding environment) or outputs (exchanges of energy from within the ecosystem). Open ecosystems are ones that have both inputs and outputs.

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