Question

which of the following is a recently occurred problem. a, global warming b, ozone depletion c, green house effect
​

Answer 1

Explanation:

Global Warming and Ozone Layer Depletion:

STS Issues for Social Studies Classrooms

James A. Rye, Donna D. Strong, and Peter A. Rubba

“That’s depressing!” remarked a preservice teacher about the likely consequences of China and India achieving the energy-intensive lifestyle of the United States. She had just been looking at the record of average surface temperatures of the Earth. The year 1998 was the warmest since reliable temperature records have been kept, and the twentieth year in a row in which the average global surface temperature was higher than the 119-year average. The next year, 1999, was the fifth warmest on record; the six warmest years on record have occurred in the last decade