Writing Standards > Informative and Explanatory Writing (CCSS.W.7.2) Practice Test

Climate change affects life in many ways. Coral reefs, often called the rainforests of the sea, are especially sensitive. When ocean temperatures rise even a few degrees, corals expel the algae that give them color and energy. This process, known as bleaching, leaves reefs pale and weak. Ocean acidification, caused by increased carbon dioxide, also makes it harder for corals to build their skeletons. Weakened reefs shelter fewer fish, threatening food sources and tourism in coastal communities. Some local actions can reduce stress on reefs. For example, limiting coastal pollution keeps water clearer, and establishing marine protected areas reduces overfishing. Educating boaters to avoid anchoring on reefs prevents physical damage. Together, these steps cannot stop global warming, but they can buy time while larger solutions are pursued. Communities that value reefs can play a role in protecting them.

Climate change affects life in many ways. Coral reefs, often called the rainforests of the sea, are especially sensitive. When ocean temperatures rise even a few degrees, corals expel the algae that give them color and energy. This process, known as bleaching, leaves reefs pale and weak. Ocean acidification, caused by increased carbon dioxide, also makes it harder for corals to build their skeletons. Weakened reefs shelter fewer fish, threatening food sources and tourism in coastal communities. Some local actions can reduce stress on reefs. For example, limiting coastal pollution keeps water clearer, and establishing marine protected areas reduces overfishing. Educating boaters to avoid anchoring on reefs prevents physical damage. Together, these steps cannot stop global warming, but they can buy time while larger solutions are pursued. Communities that value reefs can play a role in protecting them.