When the owl is the secondary consumer , the food chain will be
Grasses ⇒mouse⇒ owl
When the owl is the tertiary consumer , the food chain will be
Grasses⇒grasshopper⇒frog⇒ owl.
Food chain contains series of branches which depicts how energy flows
within an ecosystem.
The primary producers such as plants usually begin the food chain which is
then followed by primary consumers which are mostly herbivores. The
secondary or tertiary consumers are mostly carnivores or omnivores.
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