CORAL-REEF DECLINE
![](https://www.antarcticajournal.com/wp-content/uploads/2015/08/Facts-Trends-General.png)
Heat and acidity are also bad for coral reefs, which have declined by 40% in some areas since the 1970s. Coral organisms reproduce just once a year, making it hard for reefs to bounce back.
Heat and acidity are also bad for coral reefs, which have declined by 40% in some areas since the 1970s. Coral organisms reproduce just once a year, making it hard for reefs to bounce back.