1, take out a slightly larger square dot colored paper, fold it diagonally, and then fold it into a triangle.

2. Open, and fold the two right-angled sides of the triangle to overlap at the middle crease.

3. Fold the other half to the middle crease for later use. Take a piece of green paper and fold it diagonally.

4, open, two sides folded in half to the middle, two sides folded up a part, together.

Introduction to nouns:

Carrot is a variety of wild carrot in Umbelliferae, an annual or biennial herb. Roots are stout, rectangular, conical, orange-red or yellow. Stems erect, up to 90 cm, much branched. Long-stalked leaves, pinnately compound leaves, lobes linear or lanceolate, and acute apex; The petiole base swells to form a leaf sheath. Compound umbel; Peduncle hairy; Flowers are usually white and sometimes reddish; Petals are unequal in length. This kind of fruit is conical with white thorns on the edge.

Main value:

People pay more and more attention to the nutritional value of carrots. This is mainly because carotene in carrots is the main source of vitamin A, which can promote growth, prevent bacterial infection and protect epithelial cells such as epidermal tissue, respiratory tract, digestive tract and urinary system. Lack of vitamin A can lead to xerosis conjunctiva, night blindness, cataracts and other diseases, such as muscular atrophy, atrophy of internal organs and genital degeneration.

For ordinary adults, 2200 international units of vitamin A are needed every day to maintain normal life activities. It has anti-cancer effect, which is mainly because carotene can be converted into vitamin A in human body.