The diagram below shows the stars that are nearest to our solar system. Students were discussing this diagram and why these are the brightest stars in our sky.

Study the diagram and explain why the student C is incorrect. Student C said , “I think it’s because these stars are very close and very luminous.”

Then rewrite Students C's explanation to be correct.

Which type of fossil does this image depict?

The arrangement of particles is most ordered in a sample of

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?