给出一篇英文文章，让GPT模型帮助简化该文章，使其更容易理解。
原始文章:
Variations in climate and weather patterns can affect human behavior in various ways, such as influencing buying habits and mood. A study in 2015 found that colder temperatures can make people feel more depressed, while sunshine can elevate their mood. Similarly, more rain and snow fall in certain regions can affect retail sales, while drought may lead to water shortages and impact agriculture.
Climate and weather can impact human behavior. Cold weather can make people feel depressed, while sunshine can improve mood. Rain and snow can affect retail sales, while drought can lead to water shortages and impact agriculture.