Claim: Coral atolls grow as sea levels rise.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Gradual sea-level rise also allows for coral polyp activity to raise the atolls with the sea level.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: As communities established themselves, the reefs grew upwards, pacing rising sea levels.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Healthy tropical coral reefs grow horizontally from 1 to 3 cm (0.39 to 1.18 in) per year, and grow vertically anywhere from 1 to 25 cm (0.39 to 9.84 in) per year; however, they grow only at depths shallower than 150 m (490 ft) because of their need for sunlight, and cannot grow above sea level.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Atolls may also be formed by the sinking of the seabed or rising of the sea level.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Gradual sea-level rise also allows for coral polyp activity to increase the reefs.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Coral islands defy sea-level rise over the past century: Records from a central Pacific atoll".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: An effect of global climate change is the rising sea levels which can lead to reef drowing or coral bleaching.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The atolls have shown resilience to gradual sea-level rise, with atolls and reef islands being able to grow under current climate conditions by generating sufficient sand and coral debris that accumulates and gets dumped on the islands during cyclones.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Habili – reef specific to the Red Sea; does not reach near enough to the surface to cause visible surf; may be a hazard to ships (from the Arabic for "unborn") Microatoll – community of species of corals; vertical growth limited by average tidal height; growth morphologies offer a low-resolution record of patterns of sea level change; fossilized remains can be dated using radioactive carbon dating and have been used to reconstruct Holocene sea levels Cays – small, low-elevation, sandy islands formed on the surface of coral reefs from eroded material that piles up, forming an area above sea level; can be stabilized by plants to become habitable; occur in tropical environments throughout the Pacific, Atlantic and Indian Oceans (including the Caribbean and on the Great Barrier Reef and Belize Barrier Reef), where they provide habitable and agricultural land Seamount or guyot – formed when a coral reef on a volcanic island subsides; tops of seamounts are rounded and guyots are flat; flat tops of guyots, or tablemounts, are due to erosion by waves, winds, and atmospheric processes Coral reef ecosystems contain distinct zones that host different kinds of habitats.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Climate-change–driven accelerated sea-level rise detected in the altimeter era".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Rising sea levels threaten small Pacific island nations".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: One of the main results of climate change is rising sea water temperature which has a serious effect on coral reefs, through thermal-stress related coral bleaching.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: However, if the increase in sea level occurs at faster rate as compared to coral growth, or if polyp activity is damaged by ocean acidification, then the resilience of the atolls and reef islands is less certain.