Answer:
The word "protracted" means lasting longer than expected, or unusually long, so what protracted most clearly means based on the context of the excerpt is how the time period of celestial motion studies must have lasted unusually long.
Answer:
continuous innovation
Explanation:
The vast majority of new products can be classified as continuous innovations (or incremental innovations) where one existing product is changed into a new product. By carrying out continuous innovations, the producers do not alter existing consumer habits. Most consumers rarely notice continuous innovations and they do not even consider that they are actually using a new product. E.g. every time the formula for a soap, detergent, shampoo, etc., changes it is considered a continuous innovation even though people still buy the same product. Continuous innovations basically refers to improving existing products.
We are moving forward in science and math and health, which is saving lives.
The topic that would be best written with compare and contrast structure is "How does an arena football player train versus the training of an NFL player?"
<h3>What is a compare and contrast structure?</h3>
Essays written in a compare and contrast structure will:
- Choose two things, events, people, etc. to write about.
- Write one or a couple of paragraphs describing what is similar about those things. In other words, compare them.
- Write one or a couple of paragraphs describing what is different about those things. In other words, contrast them.
- Conclude, if possible, which one is the best out of those things. However, this is not mandatory. It can be left for readers to decide.
With that in mind, we must now choose among the answer choices the one that would be the best topic for a compare and contrast essay. The only possibility is option D. This topic is all about comparing and contrasting the training of an arena football player with the training of an NFL player.
We can conclude, thus, that the correct answer for this question is option D.
Learn more about compare and contrast here:
brainly.com/question/20362346
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