Amazon worlds thickest forest...

It’s very difficult to measure how dense a forest is. A dense forest is a forest thick with trees or having trees growing very closely together.

It has been estimated that about half of the Earth’s mature tropical forests between 7.5 million and 8 million square km of the original 15 million to 16 million square km that until 1947 covered the planet have now been cleared. Some scientists have predicted that unless significant measures are taken on a worldwide basis, by 2030 there will only be ten percent remaining, with another ten percent in a degraded condition.
Amazon basin in South America is home to the world’s largest contiguous tropical rain forest. The Amazon is the world’s second longest and the most voluminous river spreading across nine countries. The Amazon basin encompasses 7,000,000 square kilometers (1.2 billion acres), while the forest itself, home to the greatest variety of plants and animals on Earth, occupies some 5,500,000 square kilometers.

The majority of the forest is contained within Brazil, with 60% of the rain forest, followed by Peru with 13%, and with minor amounts in Colombia, Venezuela, Ecuador, Bolivia, Guyana, Suriname, and French Guiana. One fifth of all the world’s plants and birds and almost one tenth of all mammal species are found here