Biodiversity supports food security and sustained livelihoods through overall genetic diversity. ​Genes regulate all biological processes on the planet and increase the ability of organisms to cope with environmental stressors. Biodiversity underpins global nutrition and food security. Millions of species work together to provide us with a large array of fruits, vegetables and animal products essential to a healthy, balanced diet but they are increasingly under threat. Biodiversity conservation protects plant, animal, microbial and genetic resources for food production, agriculture, and ecosystem functions such as fertilizing the soil, recycling nutrients, regulating pests and disease, controlling erosion, and pollinating crops and trees. Biodiversity is the number and variety of plants, animals and other organisms that are living in an ecosystem. Biodiversity is a measure of the variety of organisms that exist in different ecosystems. Bio means 'life', diversity means 'variety'. The species is the fundamental unit by which we can measure biodiversity. Biodiversity supports habitats for all species by providing many unique environments in which species can exist; these include ecosystems of all types and sizes, rare ecosystems, and corridors between habitats.

Biodiversity play the fundamental function throughout the world. Their diversity provide various environment habitats. Through examining their presence or not in different time or years, they can act as indicator for climate change.

Dear Dr Chaofeng Wang Thank you your contribution to the discussion.

Biodiversity maintains the ecological balance. It helps in the healthy existence of humans and other species in the ecosystem. It helps in high productivity and human wellness. Biodiversity provides humans with valuable genetic diversity. The biggest impact of biodiversity is on the environment. Healthy ecosystems help to maintain the Earth's natural processes. Soil turnover, water purification, pest control, and other processes wouldn't be possible without the species that Biodiversity is an input to aspects of ecosystem functioning and thus to the supply of ecosystem services which in turn provide benefits to people. Maintaining biodiversity is essential for organic waste disposal, soil formation, biological nitrogen fixation, crop and livestock genetics, biological pest control, plant pollination, and pharmaceuticals. Thus, they help in soil formation, reducing pollution, protection of land, water and air resources. These functions of biodiversity are important for ecosystem functions and stability and biodiversity underpins the basis of all the ecosystem services on the planet. Agriculture, forestry and fisheries products, stable natural hydrological cycles, fertile soils, a balanced climate and numerous other vital ecosystem services depend upon the conservation of biological diversity. Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations. Even if certain species are affected by pollution, climate change or human activities, the ecosystem as a whole may adapt and survive. Biodiversity conservation protects plant, animal, microbial and genetic resources for food production, agriculture, and ecosystem functions such as fertilizing the soil, recycling nutrients, regulating pests and disease, controlling erosion, and pollinating crops and trees. Biodiversity should be conserved to prevent species extinction. It is preserved to maintain a balance in nature. If one organism in the food chain gets extinct it will impact the lives of other organisms. Plants and animals depend on each other in order to survive, therefore the destruction of one would affect the life of the other. Hence, we should conserve biodiversity to prevent these species to become extinct and to maintain a balance in the nature.

With most of it summed up above by RK Naresh and Chaofeng Wang, I want to add that biodiversity is invaluable as resource for future development and health. Each genome is unique in itself which has evolved through billions of years. It is the wealth we have which has been provided by natural evolution. We shouldn't lose any of it. We have copied some of the nature's gifts to develop our own stuff like the shape of bullet train, velcro, shape of fast submarines, radar/sonar systems among others. If we lose any of the unique species, we (I mean the whole wold) are going to be less wealthy.

Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. Its conservation preserves the ecological diversity and life support systems water, air and soil. Biodiversity conservation protects plant, animal, microbial and genetic resources for food production, agriculture, and ecosystem functions such as fertilizing the soil, recycling nutrients, regulating pests and disease, controlling erosion, and pollinating crops and trees. Thus, they help in soil formation, reducing pollution, protection of land, water and air resources. These functions of biodiversity are important for ecosystem functions and stability. Biodiversity is the number and variety of plants, animals and other organisms that are living in an ecosystem. Biodiversity is a measure of the variety of organisms that exist in different ecosystems. Bio means 'life', diversity means 'variety'. The species is the fundamental unit by which we can measure biodiversity. Biodiversity maintains the ecological balance. It helps in the healthy existence of humans and other species in the ecosystem. It helps in high productivity and human wellness. Biodiversity provides humans with valuable genetic diversity. Protection of species and species subdivisions will support biodiversity. Maintaining habitat is fundamental to conserving species. Ecological value generally as the level of benefits that the space and water, minerals, biota, and all other factors that make up natural ecosystems provide to support native life forms. The biggest impact of biodiversity is on the environment. Healthy ecosystems help to maintain the Earth's natural processes. Soil turnover, water purification, pest control, and other processes wouldn't be possible without the species that support them.

Ecosystem stability is the ability of an ecosystem to maintain a steady state, even after a stress or disturbance has occurred. Many factors influence the magnitude and stability of ecosystem properties, including climate, geography, and soil or sediment type. These abiotic controls interact with functional traits of organisms to control ecosystem properties. The higher the biodiversity, the greater the stability of the ecosystem. Biodiversity in ecosystems, species, and individuals’ leads to greater stability and species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change. There is growing concern about the health consequences of biodiversity loss. Biodiversity changes affect ecosystem functioning and significant disruptions of ecosystems can result in life sustaining ecosystem goods and services. Biodiversity plays a major role in many ecosystem services such as replenishing oxygen through photosynthesis, pollination through bees, regulation of global climate, control of flood, and soil erosion, nutrient cycling”, microbial waste treatment, biological control of pests etc. Food production relies on biodiversity for a variety of food plants, pollination, pest control, nutrient provision, genetic diversity, and disease prevention and control. Declining biodiversity lowers an ecosystem's productivity and lowers the quality of the ecosystem's services. When land is converted for agriculture, some animal and plant species may lose their habitat and face extinction. But climate change is playing an increasingly important role in the decline of biodiversity. Climate change has altered marine, terrestrial, and freshwater ecosystems around the world. Climate change is the shift or abnormal change in climate patterns. As the planet warms quickly, mostly due to human activity, climate patterns in regions around the world will fluctuate. Ecosystems and biodiversity will be forced to fluctuate along with the regional climate, and that could harm many species.

Biodiversity plays a major role in maintaining the balance of the earth. Furthermore, everything depends upon the biological diversity of different plants and animals. But due to some reasons, biodiversity is decreasing day by day. If it does not stop then our earth could no longer be a place to live in. Biodiversity should be conserved to prevent species extinction. It is preserved to maintain a balance in nature. If one organism in the food chain gets extinct it will impact the lives of other organisms. Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations. Even if certain species are affected by pollution, climate change or human activities, the ecosystem as a whole may adapt and survive. Biodiversity maintains the ecological balance. It helps in the healthy existence of humans and other species in the ecosystem. It helps in high productivity and human wellness.Maintaining biodiversity is essential for organic waste disposal, soil formation, biological nitrogen fixation, crop and livestock genetics, biological pest control, plant pollination, and pharmaceuticals. Thus, they help in soil formation, reducing pollution, protection of land, water and air resources. These functions of biodiversity are important for ecosystem functions and stability. The biggest impact of biodiversity is on the environment. Healthy ecosystems help to maintain the Earth's natural processes. Soil turnover, water purification, pest control, and other processes wouldn't be possible without the species that support them.

Prior to my response, everyone has had very intelligent responses. But there is one more thing - biodiversity makes our human life much more exciting and interesting. I LIKES it!