Energy Flow in Ecosystems Answers

Which process do plants use to turn sunlight into food energy?

What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?

Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?

Which organisms are heterotrophs?

Which organism is an example of a producer?

Maggots feed on dead and decaying organisms for energy. What are maggots?

Which kind of organism is an autotroph?

Yellowfin tuna, or Thunnus albacores, are large sport fish that are found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to a food source such as smaller herbivorous fish that may be foraging for food around the structures. Which trophic level does yellowfin tuna fill in a food chain?

A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?

Why are mushrooms important to the food chain?