Wetlands purify water through natural processes where aquatic plants act as bio-filters. Plants absorb phosphates and nitrates from the water and roots help to put back oxygen into the water.
Constructed wetlands are a cost-effective method of treating wastewater and polluted water bodies. These are low cost solutions and can be easily made or replicated.
The food we eat comes from various sources, among them, plants are the largest group of souces and our primary food producers. Can you think of the food items we get from plants?