The preposition in question is "on", and its purpose is to show you where the dog chewed. You can remove the preposition to form the sentence "The brown dog chewed the rawhide bone." You can also rearrange it to find the preposition, "on the rawhide bone, the dog chewed" in what is commonly known as the Yoda technique.
Answer:
distinguish
Explanation:
Tennis, one of the oldest of the modern sports, goes back as far as the 1500s, though the true modern game of "lawn tennis" goes back to the 1870s. The game primarily grew out of England, including the first Wimbledon Championships in 1877. The International Lawn Tennis Federation, now known simply as the International Tennis Federation, the sport's governing body, was founded in 1913, composed of 13 national tennis associations.
Main: What is autism?
1-5 ideas:
How does it affect those who have it and those around them?
What are the symptoms?
How is autism caused?
What are the statistics for autism? (What percent has it)
Can it be prevented?
Can it be cured?
I honestly know very little about autism, but I hope this is helpful, I did some brainstorming, but if you need more ideas let me know.
I believe that both are complete sentences.