Which main-sequence on the hertzsprung-russell diagram are the least massive? a.) yellow b.) blue c.) orange d.) red

D.) Red

Explanation:

A star's luminosity and surface temperature are its two most important observational properties and are related to its mass in the formation. A graph of luminosity against temperature produces the Herzprung-Russell Diagram. Its historical importance arises, not only because it allowed the observation that stars evolve, but because they have become extremely important in the study of stellar evolution.

This diagram owes its name to two astronomers: the Danish Ejnar Hertzsprung and the American Henry Norris Russell, who, independently, in 1911 found that in a diagram of this type the stars did not occupy a random position, but were mostly located in certain positions, according to its mass and its radius.

According to this diagram, the least massive sequence is that of red color.

its been noted for the past decade or so that there is some (approximately 5% to 7%) shrinkage in the brains of people who have schizophrenia, most notably in the gray matter, which is an important part structures in the brain’s amygdala, hippocampus and parahippocampus, which are all involved in memory storage and retrieval memory storage and retrieval.

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the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

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