The correct answer is - T (True).
The marine biome is the largest biome in the world. It takes approximately 70% of the Earth's surface which makes it much bigger than any other biome on the planet. It is the bime in which there are the most types of living organisms, and it is explored only slightly, and every day there's new species discovered in it and the number is increasing all the time. It is also the biome where the first life on Earth developed.