LIFE SCIENCE

Detailed explanation-1: -Every food chain starts with producers because only plants are capable of changing light energy into chemical energy, which is then used by both plants and other consumers.

Detailed explanation-2: -A food chain always starts with a producer, which is an organism that makes food. This is usually a green plant, because plants can make their own food by photosynthesis.

Detailed explanation-3: -All energy pyramids, food chains, and food webs are based on producers. These organisms provide energy for all other trophic levels that come above them. These trophic levels consist of organisms called consumers that consume (eat) other organisms for energy.