What significant prediction did Paul Ehrlich make in his book "Population Bomb"?

In "Population Bomb," Paul Ehrlich famously predicted that overpopulation would lead to widespread disaster, including famine, environmental degradation, and societal collapse. His concerns stemmed from the rapid increase in human population during the 20th century and the finite nature of resources available to support this growth. Ehrlich argued that if population growth continued unabated, it would outstrip food production and resources, resulting in catastrophic consequences. This prediction was rooted in the Malthusian theory, which emphasizes that population grows exponentially while resources grow arithmetically, underscoring the potential for a crisis if measures weren't taken to control population growth and improve resource management. This concept continues to provoke discussions around sustainability and resource management today.