The monarch, with its distinctive orange and black pattern, is considered one the world’s most beautiful butterflies. In North America, thousands of monarchs gather in autumn and migrate southward, sometimes more than 1,800 miles (2,900 km), and return north in spring. Their ability to return to the same spots over several generations has led scientists to research how circadian rhythm and the position of the sun are involved. What is aposematism, and how do monarch butterflies exemplify it? Discuss