As a subject matter expert in environmental science, I have a profound understanding of the various biomes that constitute the Earth's ecosystems. A biome is a large community of plants and animals that occupies a distinct region defined by its climate and geography. The Earth is a diverse planet, and its biomes are as varied as the climates they inhabit.

The Marine Biome is indeed the largest biome on Earth, encompassing the vast oceans that cover over 70 percent of the planet's surface. This biome is characterized by its high salinity and is home to a plethora of marine life, ranging from microscopic plankton to the largest creatures on Earth, such as whales. The marine biome is critical to the planet's climate, as it absorbs a significant amount of carbon dioxide and helps regulate global temperatures.

However, when we talk about the biome that covers the most of the Earth's surface in terms of land, the answer is the Tundra Biome. The tundra is a biome characterized by its cold, treeless landscape and is found in the Arctic and Antarctic regions, as well as high mountain areas. It is the coldest of all biomes, with long, harsh winters and short, cool summers. Despite these extreme conditions, the tundra hosts a unique array of flora and fauna adapted to survive in such an environment.

The Taiga, also known as the boreal forest, is another extensive biome, primarily found in high northern latitudes. It is the world's largest terrestrial biome and is characterized by its coniferous forests, which include species like spruce, pine, and fir trees. The taiga provides habitat for a variety of wildlife, including bears, wolves, and migratory birds.

The Temperate Forest biome is found in areas with moderate temperatures and distinct seasons. These forests are typically composed of a mix of deciduous and evergreen trees and support a diverse range of animal species.

The Tropical Rainforest biome is known for its high biodiversity and is characterized by its warm, wet climate with high annual rainfall. These rainforests are primarily located near the equator and are home to a vast number of plant and animal species, many of which are found nowhere else on the planet.

Deserts, grasslands, and other biomes also play significant roles in the Earth's ecosystems, each with its own unique characteristics and inhabitants. However, when considering the total land area covered by a single biome, the tundra stands out as the most extensive.

In conclusion, while the marine biome covers the majority of Earth's surface, the tundra biome covers the most land area. Each biome is a critical component of the Earth's ecological system, and understanding their characteristics and importance is essential for the preservation of our planet's biodiversity.

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There are seven kinds of biomes in the world: tundra, taiga, temperate forest, tropical rainforest, desert, grassland, and ocean. The Marine Biome is the largest Biome on Earth. Over 70 percent of the earth's surface is covered by water.Dec 18, 2017read more >>