Which two statements best describe fertilization and meiosis in the life cycle of plants? I. These processes are part of the life cycle.
II. These processes produce gametophytes.
III. Fertilization produces a zygote, and meiosis produces haploid spores.
IV. Fertilization is used only by seedless plants; meiosis is used only by seed plants.

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image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: