Tiny polyps (水螅体) form the coral reefs 2.__ These colours come from the algae (海藻)living inside the coral. Bllions ofcoral polyps stick together. New ones grow on the dead corals. This happens year after year. Over time, the coralbuilds up a reef. The reef rises from the ocean...
Young polys attach themselves to the old skeletons and make new skeletons .Over time , various shapes are slowly built upinto amazing coral reefs(珊瑚礁).珊瑚虫把海水中的钙变成一种坚硬的石头.慢慢地,它们在身体周围建立起一个坚硬的骨架.当淋巴管死亡时,它们的骨骼仍然存在.年轻的多聚体附着在一起...
other creatures.Now these beautifaul places are in danger.(16)___.Scientists have found that more than one-fourth of the Earth's coral reefs have been ruined so far.Another quarter will disappearin ten years'time.Unless things change,all of the remaining reefs may die within your lifetime...
Over time, corals build up a reef. The reef rises from the ocean floor until it almost reaches the sea's surface. 43 While it may take human be-ings a few seconds to harm it.44 People have broken off pieces of coral reefs to sell or keep them. To catch more fish, people have dr...
Tiny corals form the coral reefs. They have different colours. These colours come from the algae (海藻) living inside the coral. Lots of corals stick together. New ones grow on the body of dead corals. This happens year after year. Over time corals build up a reef. The reef rises from...
Recent efforts to monitor the health of coral reefs have highlighted the benefits of using structure from motion-based assessments, and despite increasing use of this technique in ecology and geomorphology, no study has attempted to quantify the precision of this technique over time and across ...
2. Coral reefs and their ecosystem services 3. Human activities and record rates of coral reef degradation 4. Climate change, ocean acidification and their impact on coral reefs 5. The value of current ecosystem service provision 6. Thought experiment: how do human responses affect the economics...
Tiny polyps (水螅体) form the coral reefs. 【2】 These colours come from the algae (海藻) living inside the coral. Billions of coral polyps stick together. New ones grow on the dead corals. This happens year after year. Over time, the coral builds up a reef. The reef rises from the...
Over a very long time,corals build up a reef.The reef rises from the ocean floor until it almost reaches the sea's surface.It takes corals 500,000 years to build a huge reef.It has taken human beings less than 100 years to start harming coral reefs. Coral reefs have been harmed in ...
Coral reefs are crucial to the biodiversity of the world's oceans. They cover less than 1% of the ocean floor, but provide food and shelter to over 25% of all ocean creatures—up to 2 million species! Disney scientists and conservationists are working hard in Florida and around the world ...