Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair: 
Instruction: I would like for you to briefly summarize this body of text from an article on sports gambling.

Here is the text:

States are increasingly pushing for the legalization of sports betting and it could present investors with a grand opportunity in 2020, Wall Street analysts think.

Pennsylvania made sports gambling legal in 2017. New Jersey joined Pennsylvania in June 2018. More recently, Michigan’s state government signed into law a series of bills that will allow residents to wager on sporting events next year. Montana, North Carolina and West Virginia are also among the 20 states that have legalized sports betting.

The rapid adoption of sports betting not only has the potential to boost state revenues. It also could make certain gaming stocks a more attractive investment in the new year.
Response: Wall Street analysts indicate that investors may have a big opportunity with sports gambling as more states push to legalize it. Legalizing sports gambling can increase the attractiveness of gaming stocks as well as boost state revenues.

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Summarization. Write a long text of instruction by yourself, then summarize the given instruction in a response. Ensure that the responses are informative and accurate, suitable for an educational context. 

Store the generated pairs in valid JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance: 

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]} 

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.

Briefly summarize this paragraph on climate change and its impact on polar bears.
user
Climate change is causing the Arctic ice to melt, reducing the habitat for polar bears and making it difficult for them to find food, which threatens their survival.
assistant