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Where do the forests grow?
A) Where soil is available
B) Where the sunshine is there
C) Where rainfall occurs
D) All of these

Answer
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Hint: A forest is an area of terrain where trees predominate. Hundreds of different definitions of forest exist around the world, taking into account characteristics including tree density, tree height, land use, legal status, and ecological function. A forest, according to the Food and Agriculture Organization, is defined as land with trees taller than 5 meters and a canopy cover of more than 10%, or trees capable of reaching these thresholds in situ.

Complete answer:
The growth of a forest is influenced by environmental elements such as sunshine, climate, rainfall, and soil conditions. Light, a proper climate, and a plentiful supply of water and nutrients from the soil are essential for all trees. Trees require different amounts of water and can withstand different temperatures. Environmental conditions have an impact on the rate of development, size, and reproduction of all trees.

Ancient plants and arthropods began to populate the area some 420 million years ago, during the Silurian Period. These land invaders evolved and adapted to their new environment throughout the millions of years that followed. Giant horsetails, club mosses, and ferns that grew up to 40 feet tall dominated the early forests. Gymnosperms first appeared in the late Paleozoic, as life on Earth continued to evolve. Gymnosperms dominated the Earth's woods by the Triassic Period (245-208 mya).

The first flowering plants (angiosperms) developed during the Cretaceous Period (144-65 million years ago). They co-evolved with insects, birds, and mammals and spread quickly, eventually taking over the landscape by the end of the Period. During the Pleistocene Ice Ages, the environment transformed once more: tropical forests that had dominated the world for millions of years gave way to temperate forests in the Northern Hemisphere.

Therefore the correct answer is option ‘D’.

Note: Forests cover around one-third of the Earth's land surface, account for over two-thirds of land plant leaf area, and contain roughly 70% of all carbon found in living organisms. In folklore, they have been revered and worshipped by ancient religions. However, as human populations have grown over the past several thousand years, forests have become major victims of civilization, resulting in deforestation, pollution, and industrial use issues in this crucial ecosystem.
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