Biodiversity under investigation

     The premise of maintaining biodiversity is to have a large number of ecosystems. All ecosystems are composed of at least three parts: producers, consumers and  decomposers. At the same time, there are three levels: genetic diversity (genetic diversity), species diversity and ecosystem diversity. These differences are mainly reflected in genes. It's like a biological web, where the components are interdependent. Once a factor changes, the whole system will be affected, resulting in positive or negative consequences. There are many reasons for this, such as human activities. It includes the destruction and pollution of living environment, the over exploitation of species by human beings, the active or passive introduction of alien species due to population flow, and the accelerated spread of diseases. In this regard, we can establish nature reserves to protect biodiversity.