Why are my cucumber leaves dying and how can I prevent it?

Cucumber leaves may be dying due to various reasons such as lack of water, nutrient deficiencies, pests, or diseases. To prevent this, ensure your cucumber plants receive adequate water, sunlight, and nutrients. Regularly inspect the leaves for signs of pests or diseases and take appropriate measures to control them. Proper spacing, good air circulation, and avoiding overhead watering can also help prevent leaf problems.