A scientist wants to write an explanation for how energy transfers to and from each organism in an ecosystem. Which of the following explanations is best?
Heat energy is used by each organism to fuel its daily activities and this transfers to other organisms.
Chemical energy is stored within the tissues of each organism and is available only to consumers.
Consumers are the only organisms that need energy to live. That is why they are the only ones to eat.
Chemical energy is stored within the tissues of each organism and is available to both producers and consumers.
All of the explanations model how energy flows through an ecosystem.