Hello!
Topic sentences express the main idea of paragraphs, states the main point the writer wishes to make, and is usually the first sentence in a paragraph.
The sentence in this paragraph which meets all of the above criteria: <span>Writing is difficult because so many skills are involved.
This sentence states the main idea, lets us know what the author is trying to say, and is the first sentence of the paragraph--all the things we expect topic sentences to do.
I hope this helps you!</span>
Answer:
Historically important for explorers
Explanation:
The chronometer was used in navigation to determine the longitude by accurately measuring the time of a known fixed position, like for example Greenwich Mean Time (GMT), the Prime Meridian of zero in Greenwich, England. As a navigational tool it helped European explorers to measure their position and calculate longitude in any weather condition.
Answer:
To basically make sure you knew what you was talking about and so that you can also tell the reader about your writing in different words.
Explanation:
