How does exhaust heat energy coming from a heat engine affect the environment?

Exhaust heat energy from heat engines contributes to environmental issues primarily through its role in increasing ambient temperatures, which can exacerbate urban heat island effects. Additionally, when this heat is released into the atmosphere, it can impact local weather patterns and contribute to climate change. The energy loss also reflects inefficiencies in energy use, leading to higher fuel consumption and increased greenhouse gas emissions. Collectively, these factors can degrade air quality and harm ecosystems.