The skin represents the first physical barrier to protect our bodies from harmful toxins, pathogens and dangerous environmental factors and plays an important role in social and visual experiences. South Africans have used traditional herbal medicinal products to increase immunity in
The cost of building materials contributes significantly to overall construction costs, with ordinary Portland cement (OPC) being one of the main components. The production of OPC is not environmentally friendly. It is energy-intensive, uses natural resources such as limestone, and produces high

Water hyacinth (Eichhornia crassipes) is an aquatic weed which has one of the highest growth rates of all plants in the world. This fast-growing plant causes numerous problems in water bodies. These problems are related to navigation, recreation, irrigation and hydropower generation. The complete