Twelve percent of dog owners would prefer to own a cat, this state contains numerical evidence in the form of a statistic
A persuasive essay persuades the reader, like a debate. Note that you also need to have a debatable claim, you can't try to persuade someone that the sun is green.
Answer would only be: experts opinion
Science and technology of the future, the future world, space, or even another world/dimension, and its effects on humans
