The amount of magnetic flux that rises up to the Sun's surface varies with time in a cycle called the solar cycle. This cycle lasts 11 years on average. This cycle is sometimes referred to as the sunspot cycle. Near the minimum of the solar cycle, it is rare to see sunspots on the Sun, and the spots that do appear are very small and short-lived.
exists and is an alternate of . Making the world better, one answer at a time. The three main parts of the cell are the cell membrane (surrounds and protects the cell), the cytoplasm (the liquid inside the cell), and the nucleus (control center of the cell). Minor edit?
Cytoplasm. All cells in the human body have three distinctive parts. These are the nucleus, the cytoplasm, and the cell membrane. The cell membrane is the outer-boundary of a cell, and it contains various channels to let materials into and out of a cell.The nucleus is at the center of the cell, and it is home to all of a cellâs chromosomes, or genetic material.ome of the most important organelles that cytoplasm contains are the ribosomes, mitochondria, proteins, the endoplasmic reticulum, lysosomes, and the the Golgi apparatus. The mitochondria are areas of âenergy-makingâ, because they contain the materials necessary for ATP synthesis, or the fueling of the cell.