3 groups according to their role in the ecosystem….. :
3 groups according to their role in the ecosystem….. Producers-They produce their own food.
Consumers-organisms that eat other organisms.3 type of consumers-primary-herbivore, secondary-carnivores and omnivores and tertiary consumers-large animals feed on secondary consumer.
Decomposers-Are organisms that break down dead animal and plant materials.
Food Pyramid :
Food Pyramid
Food pyramid :
Food pyramid As u you can see the bottom is the producer,the second is the primary consumer,the third one is the secondary consumer and the last is the tertiary consumer.