An example of a terrestrial ecosystem is one that contains sand and water, where fish feed on plankton, and the plankton in turn feed on algae.

is the above example true or false, and why?

false; an ecosystem with sand, water, fish, plankton, and algae would be aquatic, not terrestrial.

true; an ecosystem with sand, water, fish, plankton, and algae is an example of a terrestrial ecosystem.

false; this example is missing whales as another organism in the ecosystem.

true; these organisms and factors, as well as whales, are a part of a terrestrial ecosystem.

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