Need more info. Not being specific
what day last summer did your uncle visit Canada?
Answer:
Sentence 3
Explanation:
While all of the other sentences explain how termites can be helpful, sentence 3 is unrelated as all it does is describe the size of the nest.
Answer:
One of the great contributions the Sumerians made to civilization was their many inventions. They invented the first form of writing, a number system, the first wheeled vehicles, sun-dried bricks, and irrigation for farming. All of these things were important for the development of human civilization.