LIFE SCIENCE

Detailed explanation-1: -Organisms in food chains are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers (second, third, and fourth trophic levels), and decomposers. Producers, also known as autotrophs, make their own food.

Detailed explanation-2: -The first trophic level is formed by the producers, as they produce food. The second trophic level is formed by the primary consumers. The third trophic level is formed by the secondary consumers. The fourth trophic level is formed by the tertiary consumers.