is the author of the article suggesting that there are exceptions to the general indicators of chemical or physical changes? Which selection from the article BEST supports your answer?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Stage in which a typical star has completely stopped fusion

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space