Ecosystem, components and impact of human activities on it.

• Ecology is the scientific study of interactions between organisms and their environment.
• The biosphere includes all living things and their habitats on Earth.
• Biotic factors are biological or living parts of an ecosystem such as plants, animals, fungi, bacteria, viruses, etc.
• Biome - A large community of plants and animals occupying a major habitat or region of the earth's surface, e.g., tropical rainforest biome.
• The ecosystem is the sum total of all living organisms (biotic) and their non-living environment (abiotic).
• Abiotic factors are non-living parts of an ecosystem such as air, water, soil, sunlight, temperature, pH level, nutrients, etc.
• Community - All populations of different species that live together at one time and place.
• Abiotic factors are non-living parts of an ecosystem such as temperature, water availability, soil type, light intensity, etc.
• Population - Group of individuals of the same species living in the same area at the same time.