Organisms and their environment

Topics

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Sample objectives

What this unit covers

• Energy flow: Identify the Sun as the main source of energy for biological systems.
• Energy flow: Explain how energy moves through living organisms, starting from light energy from the Sun, converting to chemical energy within organisms, and ultimately being transferred to the environment.
• Food chains and food webs: Explain how a food chain illustrates the flow of energy from one organism to another, starting with a producer.
• Food chains and food webs: Create and analyze basic food chains.
• Carbon cycle: Explain the carbon cycle, focusing on the processes of photosynthesis, respiration, feeding, decomposition, the creation of fossil fuels, and combustion.