Energy and Substances in Food Chains

Important notes to know:

• Producer converts light energy into chemical energy this takes the form of organic molecules. 
• The organic molecules can be carbohydrates, proteins or lipids. 
• These molecules are carbon to hydrogen, carbon to oxygen, carbon to carbon, oxygen to hydrogen and carbon to nitrogen. 
• The carbon, oxygen hydrogen and nitrogen is matter/substance.
• The substances contain energy which was fixed from sunlight. This now in the form of chemical energy.