How do land plants generate the energy they need for their metabolic energy? What do they do with excess energy? Where do scavengers in an ecosystem obtain their energy from? How can scavenging be a beneficial strategy for an organism?
What is the role of decomposers?
What kind of problems can you foresee if every speck of carbon were turned into biomass? Why?
Define an ecosystem.
Distinguish between abiotic and biotic factors. Give examples of each.
Where does the energy come from for many ecosystems?
Name two nutrients that are recycled through an ecosystem.