Understanding Atoll Islands and Climate Change

Coastal communities face challenges from rising sea levels, but many atoll islands are not shrinking as expected. Instead, they remain stable or grow due to natural sediment processes. Atolls, formed from coral and other sea life, are shaped by waves and wind, which distribute sediment. Human activities and storms also impact these islands. Despite climate change threats, atolls have a future if natural processes are supported. Protecting reef ecosystems and using diverse vegetation can help maintain island stability.

What is the primary concern for coastal communities as mentioned in the introduction?

• Deforestation

• Decreasing fish populations

• Increased tourism

• Rising sea levels

What is an atoll?

• A type of fish

• A large ocean wave

• A ring-shaped coral reef structure

• A type of seaweed

What surprising trend was observed in atoll islands despite rising sea levels?

• Islands are becoming more mountainous

• Islands are disappearing rapidly

• Most islands are stable or growing

• All islands are shrinking

How do waves and winds affect atoll islands?

• They erode the islands completely

• They shape the islands by moving sediment

• They cause the islands to sink

• They have no impact on the islands

What role do storms like cyclones play in the formation of atoll islands?

• They only erode the islands

• They can both erode and build up islands

• They cause islands to merge

• They have no effect on the islands

What was the unexpected discovery on the island of Himandhoo due to erosion?

• A new species of coral

• A hidden treasure

• Dead bodies from a forgotten burial ground

• An ancient shipwreck

What is a major threat to the future of atoll islands?

• Increased tourism

• More intense tropical cyclones

• Decreased fish populations

• Deforestation

How can humans support the natural processes that protect atoll islands?

• By building more hotels

• By planting only coconut palms

• By increasing fishing activities

• By protecting and restoring reef ecosystems

What is the benefit of having diverse native plants on atoll islands?

• They attract more tourists

• They hold onto soil and sand better

• They require less water

• They grow faster than other plants

What should be considered when building infrastructure on atoll islands?

• The number of windows in the buildings

• The design should maintain the sediment conveyor belt

• The color of the buildings

• The height of the buildings