Ohio Learning Standards
LIFE SCIENCE (LS)
Topic: Interconnections within Ecosystems - This topic focuses on foundational knowledge of the structures and functions of ecosystems.
5.LS.1: Organisms perform a variety of roles in an ecosystem.
Populations of organisms can be categorized by how they acquire energy.
Food webs can be used to identify the relationships among producers, consumers and decomposers in an ecosystem.
5.LS.2: All of the processes that take place within organisms require energy.
For ecosystems, the major source of energy is sunlight. Energy entering ecosystems as sunlight is transferred and transformed by producers into energy that organisms use through the process of photosynthesis. That energy is used or stored by the producer and can be passed from organism to organism as illustrated in food webs.