A, B, and D are negative effects of global warming.
A. Rising sea levels: As the Earth's temperature increases, the polar ice caps melt, causing sea levels to rise. This can lead to flooding, erosion, and other problems for coastal communities.
B. Desertification of previously fertile land: Global warming can lead to changes in precipitation patterns and temperature, which can cause some areas to become dry and desert-like. This can lead to a loss of fertile land and a decrease in agricultural productivity.
D. Loss of various species due to the change in climate: Global warming can lead to changes in the distribution and abundance of plants and animals. Some species may struggle to adapt to these changes and may become endangered or go extinct.
C. Acid rain: Acid rain is a type of air pollution that is caused by the release of sulfur dioxide and nitrogen oxides into the atmosphere. It can have negative effects on plants, animals, and the environment, but it is not directly caused by global warming.