A．Some species have been extinct since global warming.B．Biologists have known for years declining fish stocks are connected to global warming.C．Global warming has caused the seawater warmer.D．It is more difficult for fish to breathe and survive in warmer oceans caused by global warming.
A．Some species have been extinct since global warming.
B．Biologists have known for years declining fish stocks are connected to global warming.
C．Global warming has caused the seawater warmer.
D．It is more difficult for fish to breathe and survive in warmer oceans caused by global warming.