A "long-day" refers to a period when the duration of daylight is extended, typically occurring during the summer months. This phenomenon happens because of the tilt of the Earth's axis, which allows certain regions to receive more sunlight. In places like Scandinavia, long days can last for several weeks, leading to nearly 24 hours of daylight. Long days can affect various aspects of life, including plant growth and animal behavior. Many plants thrive in extended sunlight, leading to increased photosynthesis. Additionally, some animals may alter their activity patterns, becoming more active during these longer daylight hours.