Question

identify the supporting detail for the main idea that \climate change poses significant threats to global ecosystems\ in the following passage. climate change, driven primarily by human activities, is altering ecosystems worldwide at an unprecedented rate. rising global temperatures are causing polar ice caps to melt, leading to rising sea levels and threatening coastal habitats. extreme weather events, such as hurricanes and droughts, are becoming more frequent and intense. many plant and animal species are struggling to adapt to rapidly changing conditions, with some facing extinction. coral reefs, often called the
ainforests of the sea,\ are particularly vulnerable to ocean acidification caused by increased carbon dioxide absorption. climate change is driven primarily by human activities. rising global temperatures are causing polar ice caps to melt. extreme weather events are becoming more frequent and intense. climate change is altering ecosystems worldwide at an unprecedented rate.

Explanation:

The main idea is about threats to global ecosystems from climate - change. Rising global temperatures causing polar ice caps to melt is a specific impact on ecosystems (coastal habitats are threatened due to rising sea levels). Other options are either causes of climate - change or general statements about climate - change impacts rather than specific threats to ecosystems.

Answer:

Rising global temperatures are causing polar ice caps to melt.