This would help a lot if there was an image to look at?
The Hertzsprung-Russell diagram is one of the most important tools in the study of stellar evolution. Developed independently in the early 1900's by Ejnar Hertzsprung and Henry Norris Russell, it plots the temperature of stars against their luminosity (the theoretical HR diagram), or the color of stars against their absolute magnitude
Depending on its initial mass, every star goes through specific evolutionary stages dictated by its internal structure and how it produces energy. Each of these stages corresponds to a change in the temperature and luminosity of the star, which can be seen to move to different regions on the HR diagram as it evolves. This reveals the true power of the HR diagram – astronomers can know a star’s internal structure and evolutionary stage simply by determining its position in the diagram.
The Hertzsprung-Russell diagram the various stages of stellar evolution. By far the most prominent feature is the main sequence (grey), which runs from the upper left (hot, luminous stars) to the bottom right (cool, faint stars) of the diagram. The giant branch and supergiant stars lie above the main sequence, and white dwarfs are found below it.
Monosomies is the point at which one chromosome does not have its homolog which is uncommon. Monosomies happen in cells From slip-ups in cell division amid mitosis and are related to compound presentation and cancers.Once preparation happens the gamete with 22 chromosomes shapes a zygote with 45 chromosomes. Most don't survive the just a single known to survive is monosomy 21 which resembles down disorder and causes many birth deformities and they don't survive long.
According to endosymbiosis theory, the mitochondria was once free-living prokaryotic cell. The cell was engulfed by other cell (host cell) via the process of phagocytosis.
The “eaten” cell survived inside the host. The host cell provided a nutrition and safe environment to live and the future mitochondria produced energy that the host cell can use. Over time the organelle and the host cell have evolved together.
Cultural Control
Eliminate the food supply for pink bollworm by cutting off irrigation early enough to stop production of green bolls by early September. Regardless of when the crop is terminated, immediately shred the cotton plants following harvest.
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