Note on the left that when the carrier wave of FM radio is modulated with sound that the distance between the waves, or the frequency of the carrier wave, changes. Thus, AM radio works by changing the amplitude of the carrier wave and FM radio works by changing the frequency of the carrier wave. Frequency Response.
Scholars think Hernán Cortés brought the seeds in 1519 with the intent of the fruits being used ornamentally in gardens. By the 1700s, aristocrats started eating tomatoes, but they were convinced the fruits were poison because people would die after eating them. In reality, the acidity from the tomatoes brought out lead in their pewter plates, so they’d died of lead poisoning.
All jellyfish are Cnidaria, an animal phylum that contains jellies, sea anemones, and corals, among others. There are more than 10,000 species of Cnidaria, and less than 4,000 of these are Medusazoa—those animals we think of as jellyfish. Those 4,000 jellyfish can be divided into four different groups.