If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime? Ultraviolet light detects the presence of radioactive substances.
Ultraviolet light shows cold areas as blue and warm areas as red.
Ultraviolet light causes substances to fluoresce and give off visible light.
Ultraviolet light transmits information to AM and FM radio receivers.

Read the passage from sugar changed the world. but there is another story as well. information about sugar spread as human knowledge expanded, as great civilizations and cultures exchanged ideas. in fact, while sugar was the direct cause of the expansion of slavery, the global connections that sugar brought about also fostered the most powerful ideas of human freedom. how do the details in this passage support the authors’ purpose? the details about the expansion of sugar inform readers about how widespread the use of sugar was. the details about human knowledge inform readers about how humans learned about sugar. the details about ideas and global connections persuade readers that sugar’s story has multiple consequences. the details about the spread of information about sugar entertain readers with stories of travel.