SSC Biology Chapter 13 | Environment around life | জীবের পরিবেশ | Fahad Sir скачать в хорошем качестве

SSC Biology Chapter 13 | Environment around life | জীবের পরিবেশ | Fahad Sir

Explained ecosystem, the interrelationship between the elements of an ecosystem, food chain and food web, energy flow and the nutrient elements of an ecosystem, compared the relationship between energy performances in between more tropic levels, the concept of ecological pyramid in limiting the food chains. Explained biodiversity and types of biodiversity, the roles of biodiversity in sustaining the stability of an ecosystem, conservation of environment,importance of conservation of environment in maintaining the balance in it, the reciprocal interrelationship between the producers, consumers and transformers in a given locality. the causes of pollution of all the elements of a specific environment,the flowchart showing the flow of energy, food chain and food web in an ecosystem.