4.6 : Energy and substances in food chains

producer = Bush grass
primary consumer = Impala
secondary consumer = Leopard
tertiary consumer = Lion

• producer converts light energy into chemical energy
• CE takes the form of different organic molecules such as:
- carbohydrates
- proteins
- lipids

These molecules (called food) consist of
C-H
C-O
C-C
O-H
C-N
bonds
• These bonds represent energy and carbon, hydrogen, oxygen and nitrogen are the matter(substances)

• The substance (the energy in the bonds) is passed down at each stage in the food chain