Question

what is the use of spinach and lettuce

Answer 1

they are used for making vegetables.

Answer 2

Spinach and other leafy greens high in vitamin C are crucial for the building and maintenance of collagen, which provides structure to skin and hair. Iron deficiency is a common cause of hair loss, which may be prevented by an adequate intake of iron-rich foods, such as spinach.

Most lettuce is used in salads, either alone or with other greens, vegetables, meats and cheeses. Romaine lettuce is often used for Caesar salads, with a dressing that includes anchovies and eggs. Lettuce leaves can also be found in soups, sandwiches and wraps, while the stems are eaten both raw and cooked.

Hope it helps....