[Answer] 1. Many cultures have a custom of jumping over what household object as part of the wedding ceremony?

Step 1 : Introduction to the question "1. Many cultures have a custom of jumping over what household object as part of the wedding ceremony?"

...1. Broom 2. Pan 3. Chair 4. Dish There are many diverse cultures around the world who include jumping over a broom as part of their wedding celebrations. This practice can be found in the Gypsy, Scottish, and Hungarian culture. It can also be found in some African-American populations, especially the Caribbean regions. Exact practices vary slightly, but all indicate the start of a new family and home. It is believed to bring luck, fertility, and happiness to the new marriage. The exact origins of this practice are a topic of disagreement among cultural historians.

[Answer] 5. Ivan Pavlov is most famous for his demonstrations of classical conditioning. Which household pet did he use for his experiments?

Step 1 : Introduction to the question "5. Ivan Pavlov is most famous for his demonstrations of classical conditioning. Which household pet did he use for his experiments?"

...1. Cats 2. Tortoises 3. Hamsters 4. Dogs Pavlov noticed that dogs started to salivate when there was a stimulus that they associated with food. In the most famous experiment, Pavlov struck a bell when the dogs were given their food. After a few repetitions, the dogs began to associate the sound of the bell with being given their food. The dogs would then start to salivate just on hearing the sound of the bell.