Human takes in nutrients by consuming food from animals or plants. A stable food source is therefore very crucial to human survival. Agriculture and animal husbandry are developed with vegetables are grown and animals are raised in a massive scale to provide food for us. In this project, we try to look into soil-conserving methods of agriculture. In particular, our project aims to show that using compost tea is a better method than using chemical fertilizers, in terms of environmental sustainability. We will also try to explain why using compost tea is a better method to farm, in terms of the relationship between plants and microorganisms in the soil. According to the international initiative "4 per 1000", launched by France on 1 December 2015 at the COP 21(https://www.4p1000.org/), agriculture, and in particular, agricultural soil can play a crucial role where food security and climate change are concerned. By using the method of compost tea, it can theoretically reduce carbon stocks in the soil, dealing with the problem of both climate change and sustainability of the environment.