Our Environment Mind Map

An ecosystem is a place where living things and non-living things interact with one another as a working unit.

Always mention both biotic and abiotic components when defining an ecosystem in an exam answer.

A food chain is a simple straight sequence that shows how food and energy pass from one organism to another.

When writing a food chain, always start with the producer and keep the order of feeding clear.

A food web is a network of many interconnected food chains in an ecosystem.

Use the word network or interconnected food chains when explaining a food web.

A trophic level is each feeding position in a food chain or food web.

Count trophic levels from producers upward when answering exam questions.

Biological magnification is the gradual increase in the concentration of harmful, non-biodegradable substances at higher trophic levels in a food chain.

In answers, write the words non-biodegradable and higher trophic levels to show full understanding.