Trophic levels - 1

Question 1

energy flow meaning:

Answer 1

All energy in biological systems comes first from the Sun. The full route taken is described below

Question 2

examples of energy:

Answer 2

• light energy from sun
• chemical energy in plants
• chemical energy in animals
• energy in decomposing matter

Question 3

food chains process:

Answer 3

Food chains show the feeding relationships and transfers of energy within a community. Below are some important definitions of the types of organisms found in food chains:
Producer.
An organism that makes its own organic nutrients, usually using energy from sunlight.
Consumer.
An organism that gets its energy by feeding on other organisms.
Depending on the position of the consumer in the food chain, it may be classed as primary, secondary or tertiary.
Herbivore.
Animals that get their energy from eating plants.
Primary consumers.
Carnivore.
Animals that get their energy from eating other animals.
Secondary and tertiary consumers.
Food webs show networks of interconnected food chains.