Answer : Q1. Red mangroove is the last mangroove to colonise on the shore line Q2. The melon of Dolphins are used for the focusing of sound pulses. Q4. Coral reef accounts for the largest pecentage of the oceans primary Solution Answer : Q1. Red mangroove is the last mangroove to colonise on the shore line Q2. The melon of Dolphins are used for the focusing of sound pulses. Q4. Coral reef accounts for the largest pecentage of the oceans primary.