Three Importantees of sustainable development​

sustainable development is important as it saves national budget,fulfill the needs of people , help in the coordination between the natural resources and people and conserve natural resources for future generations.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.