Yousafzai, 24, said that women were disproportionately impacted by the climate crisis. “Even right now, it’s already evident that the climate crisis is ravaging different parts of the African continent,” Ms. She said that 1.5 degrees would “not be safe” for communities like hers. Nakate, a 24-year-old climate activist from Uganda and founder of the Africa-based Rise Up Movement, said at the panel discussion on Thursday that the pledge by leaders of the 20 largest economies to “pursue efforts” to keep the average global temperature rise to 1.5 degrees Celsius did not go far enough. Bolsonaro will follow through on his country’s pledge to end deforestation by 2028. Environmentalists say that China and Russia’s targets are not ambitious enough, and activists are skeptical that Mr. Putin of Russia and Jair Bolsonaro of Brazil, were also criticized for not attending the event in person.

Several key leaders, including President Xi Jinping of China, Vladimir V. Environmentalists, however, criticized the financing pledge as lacking in detail.

Rise of nations campaign