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.
Humans, when exhaling release carbon which helps them to make sugar, and as a biproduct plants release oxegen which humans inhale.
Answer:
<u>Red blood cell in humans -</u> it has no nucleus. Hence it offers the cell to carry more haemoglobin.
- they are disc shaped allowing them to pass through narrow capillaries.
<u>Root hair cells in plants-</u> they have a large cytoplasm which enables them to take water from the soil.
<u>White Blood Cells in humans -</u> they have lobed nucleus and so can change their shape to pass through narrow capillaries.
- <em><u>HOPE IT HELPS...</u></em>
Arthritis is a term that is initially used to describe inflammation of the joints. Cartilage is a type of body tissue that keeps joints moving freely and functional well, and when they begin to break down or get inflamed, the joints don’t work as well, and it becomes painful to move
Mitosis should be the answer. if not that, then cell division. hope this helps :3
