42 Scientific research and development in the field of carbon sequestration, namely, microalgae-based carbon sequestration; Scientific research and development in the field of bioremediation, namely, microalgae-based bioremediation of waterways; Scientific research and development in the field of carbon sequestration and bioremediation, namely, computer modeling and simulations of microalgae-based carbon sequestration and bioremediation of waterways; Scientific research and development in the field of carbon sequestration and bioremediation, namely, machine-learning models of microalgae-based carbon sequestration and bioremediation of waterways; Scientific research and development in the field of water remediation, namely, microalgae-based water remediation, microalgae-based sequestration of pollutants, microalgae-based sequestration of fertilizers, heavy metals, microplastics; Scientific research and development in the field of water treatment; Scientific research and development in the field of pollution control in waterways