Question

A natural food web ______.

Options

• contains only grazing food chains

• contains several trophic levels

• is usually unstable

• all of the above

Answer 1

A natural food web contains several trophic levels.

Explanation:

A natural food web is an interconnected network of food chains within an ecosystem, each containing several trophic levels. It shows the flow of energy and nutrients from producers to various consumers. Unlike a simple food chain, it has many linkages and alternative pathways at different trophic levels, making it more stable and better representative of natural ecosystems.