answer:If the well is 22 feet deep, the snail's progress remains the same: 3 feet up during the day, 2 feet back at night, for a net gain of 1 foot per day. However, on the day the snail reaches the top of the well, it won't slip back at night. So, it takes the snail 19 days to climb 19 feet (1 foot per day), and on the 20th day, it climbs the remaining 3 feet to reach a total height of 22 feet. Therefore, it will take the snail 20 days to reach the top of the 22-foot well.

answer:If the well is 21 feet deep, the snail's progress remains the same: 3 feet up during the day, 2 feet back at night, for a net gain of 1 foot per day. It takes the snail 18 days to climb 18 feet (1 foot per day), and on the 19th day, it climbs the remaining 3 feet to reach a total height of 21 feet. Therefore, it will take the snail 19 days to reach the top of the 21-foot well.

answer:To refine the writing and make it more sophisticated and impactful for a university audience, consider the following improvements: The initial sentence can be rephrased for better clarity and concision. Instead of The amount of plastic waste in the ocean doesn't just hurt animals and the ecosystem but humans are also getting affected, try Plastic waste in the ocean has far-reaching consequences, affecting not only marine life and ecosystems but also human health. The second sentence can be improved by providing more specific information and using more formal language. Replace Humans consume seafood that contains micro-plastics and due to this they can get cancer and other diseases with The consumption of seafood contaminated with microplastics has been linked to an increased risk of cancer and other health problems, highlighting the need for urgent attention to this issue. The third sentence can be rewritten for better coherence and impact. Instead of Furthermore, plastic waste in the ocean has an impact on economies so basically all countries are getting affected by it, try Moreover, the economic implications of oceanic plastic waste are substantial, with widespread consequences for global economies and international trade. Here's the revised text: Plastic waste in the ocean has far-reaching consequences, affecting not only marine life and ecosystems but also human health. The consumption of seafood contaminated with microplastics has been linked to an increased risk of cancer and other health problems, highlighting the need for urgent attention to this issue. Moreover, the economic implications of oceanic plastic waste are substantial, with widespread consequences for global economies and international trade. These revisions aim to improve the clarity, coherence, and sophistication of the text, making it more suitable for a university audience.

answer:To further refine the text and make it more polished for a university audience, consider the following additional changes: The phrase far-reaching consequences can be made more specific and academic in tone. Replace it with devastating environmental and health impacts to provide a clearer idea of the effects of plastic waste. In the second sentence, the phrase highlighting the need for urgent attention to this issue can be removed, as it's somewhat implicit in the context of the discussion. Instead, focus on providing more concrete information about the health risks associated with microplastic consumption. The third sentence can be expanded to provide more specific examples or details about the economic implications of oceanic plastic waste. This will help to strengthen the argument and make the text more engaging. Here's the revised text: Plastic waste in the ocean has devastating environmental and health impacts, affecting not only marine life and ecosystems but also human health. The consumption of seafood contaminated with microplastics has been linked to an increased risk of cancer, reproductive problems, and other health issues. Moreover, the economic implications of oceanic plastic waste are substantial, with estimated annual losses in the billions of dollars due to damage to fisheries, tourism, and other industries, as well as the costs associated with cleanup efforts and waste management. Additionally, consider adding transitions or connecting phrases to improve the flow of the text and make it easier to follow. You could also provide more specific data or statistics to support your claims and add credibility to the argument. In terms of tone, aim for a formal and objective voice, avoiding emotive language or sensationalist appeals. Use technical vocabulary and academic terminology where relevant, but be sure to define any specialized terms or concepts to ensure clarity and accessibility. Overall, the goal is to present a clear, concise, and well-supported argument that engages the reader and demonstrates a strong understanding of the topic.