D. Twenty countries whose people share a common religion and cultural heritage
<span>Earthquake waves that vibrate from side to side and up and down only through solids are known as secondary waves, or simply S-waves. As you can see in the question, they pass through solids - to be more precise, they flow through rocks and cause them to change their shape. They are quite strong, but not as strong as primary waves, as they cannot pass through liquids or gases. </span>
The difference between a dry climate and a tropical climate is that the dry climate as you know is dry and the tropical climate is moist and wet, the compare is tropical wet climates receive much more rain than tropical dry climates do. However, the term “tropical wet and dry climate” actually refers to a single type of climate. Tropical dry climates occur in deserts, while tropical wet climates usually occur along the rainforest belt.
