USA HISTORY

Detailed explanation-1: -Reducing U.S. greenhouse gas emissions 50-52% below 2005 levels in 2030. Reaching 100% carbon pollution-free electricity by 2035. Achieving a net-zero emissions economy by 2050. Delivering 40% of the benefits from federal investments in climate and clean energy to disadvantaged communities.

Detailed explanation-2: -Change refers to the alterations or transformations that occur in societies, cultures, political systems, or other aspects of the human experience over time. Change can result from a variety of factors, including technological advancements, natural disasters, wars, social movements, and economic developments.

Detailed explanation-3: -The early 1980s would mark a sharp increase in global temperatures. Many experts point to 1988 as a critical turning point when watershed events placed global warming in the spotlight. The summer of 1988 was the hottest on record (although many since then have been hotter).

Detailed explanation-4: -Earth’s climate has changed dramatically many times since the planet was formed 4.5 billion years ago. These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun’s intensity, variations in the orbit of Earth, and volcanic eruptions.