Summarize the following text about the effects of climate change on crop yields:

Climate change is already affecting agricultural productivity across the globe, with effects varying from region to region. Increased temperatures can reduce crop yields by speeding up crop development, reducing grain-filling periods, and causing heat stress. Higher temperatures also increase water demand and drought risk. Changing precipitation patterns lead to more extreme events like floods and droughts, further impacting crop yields. Rising atmospheric carbon dioxide concentrations can have both positive and negative effects on crop growth and yield, depending on the crop type and growing conditions. Overall, many studies project declines in global crop yields if temperatures continue to rise and extreme events become more common.
Summarize the following text about the effects of climate change on crop yields:

Climate change is already affecting agricultural productivity across the globe, with effects varying from region to region. Increased temperatures can reduce crop yields by speeding up crop development, reducing grain-filling periods, and causing heat stress. Higher temperatures also increase water demand and drought risk. Changing precipitation patterns lead to more extreme events like floods and droughts, further impacting crop yields. Rising atmospheric carbon dioxide concentrations can have both positive and negative effects on crop growth and yield, depending on the crop type and growing conditions. Overall, many studies project declines in global crop yields if temperatures continue to rise and extreme events become more common.
user
The given text discusses the impacts of climate change on crop yields worldwide. Key points include: rising temperatures can reduce yields by accelerating crop development, shortening grain-filling, and causing heat stress; higher temperatures also increase water demand and drought risk; changing precipitation patterns lead to more extreme events like floods and droughts, impacting yields; elevated CO2 levels can have mixed effects on crop growth and yield depending on the crop and conditions; and many studies project global yield declines if temperatures continue rising and extreme events become more frequent.
assistant
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: Given the following article, write a summary of the key ideas.

This is the article:
Despite the city’s support, the number of farms in Tokyo has been slowly declining for years, by nearly 14.5 percent between 2005 and 2015. Over the same period, the average age of Tokyo’s farmers increased by 3.3 years, to nearly 64. Today, Ryoto Matsuzawa says there are 1,250 farms left, most of which are under one hectare in size. “We want to preserve those at all costs.”

The city recently made a crucial decision to do so. Eighty percent of the farms protected under the Law on Productive Green Areas were registered the year that law was enacted, in 1992. The law stipulates that after 30 years, the landowners can ask the city to buy their land at market price. But most cities, strapped for cash, can’t afford to. If they don’t, the land loses its tax subsidy and can be sold for commercial development.

In other words, about 80 percent of the farms protected under the law were eligible to come up for sale in 2022. “These areas are nearly 45 percent of the agricultural land in Tokyo,” says Ryoto Matsuzawa.
Response: Between 2005 and 2015, the number of farms in Tokyo decreased by 14.5 percent and the average age of farmers increased by 3.3 years. Preserving Tokyo's remaining 1,250 small farms feels priceless to many, but there is an ongoing issue where many cities cannot afford to buy the land protected under the Productive Green Areas Law at market value, as legally required. This leads to the land being lost for agricultural use, and usually being sold for commercial development.

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.
