<span>meteorology should be right</span>
They are electromagnetic waves because mechanical waves have to be physically created by something, while electromagnetic waves are just emitted without any effort or force.
Answer:
Birth rate.
Explanation:
Countries such as Japan are dealing with a low Birth Rate, meaning the population is aging due to the lack of births to lower the average age.
Answer: Excessive tariffs harm international trade. For countries that are dependent on exports to fund their economy, trade barriers can be detrimental to their economies. This creates a supply surplus. Businesses are then forced to sell products at a cheap price.