With it, you can identify and locate constellations and stars. A typical star chart (see below) shows the relative positions of the stars and their brightness. Chart of Winter Sky. To use a star chart to identify stars and constellations, you must first find the one appropriate for the time of year you are observing.
Spinach leaves are an excellent source of vitamin-K. 100 g of fresh greens provides 402% of daily vitamin-K requirements. Vitamin-K plays a vital role in strengthening the bone mass by promoting osteoblastic activity in the bones.
Iron Content. A 100-gram serving of fresh, raw spinach leaves provides 23 calories and 2.71 milligrams of iron, according to the USDA. The same size serving of fresh spinach that has been boiled without salt and then drained provides an equal number of calories and 3.57 milligrams of iron.