Rich countries (also called developed countries) are nations with strong economies, advanced technology, and higher living standards (e.g., USA, Germany, Japan).
Poor countries (developing countries) have weaker economies, less technology, and lower living standards (e.g., Bangladesh, Kenya, Nepal).
Climate change means long-term changes in the Earth’s climate caused mainly by greenhouse gases from human activity.
Examples of its effects include rising sea levels, stronger storms, droughts, and floods.