The answer is Climate change. It will take decades for thecoral reef to recover from the catastrophic climatic changes including El Ninoin 1997-98. Climate Change is the main and undeniable threats to the loss ofthe corals. It has negative effects on coral populations in some ways. Thisincludes the Color Bleaching, Coral Disease, and Ocean Acidification.
Answer:
C) destruction of the rainforest.
During embryonic development of animals, tissue layers form. This process of embryonic tissue development is called Gastrulation.