LIFE SCIENCE

Detailed explanation-1: -Here, trees and mushrooms are plants or products of plants. Squirrels come under animals and bacteria is a microbe. All these come under the category of biotic factors.

Detailed explanation-2: -Forests consist not only of living (biotic) components like trees, animals, plants, and other living things but also of nonliving (abiotic) components such as soil, water, air, and landforms. All of these components together make up a forest ecosystem.

Detailed explanation-3: -Green plants and animals are the biotic or living component of environment.

Detailed explanation-4: -A biotic factor is a living organism that shapes its environment. In a freshwater ecosystem, examples might include aquatic plants, fish, amphibians, and algae. Biotic and abiotic factors work together to create a unique ecosystem.