I wonder if you have noticed that almost no matter what mountain you climb, there are many pines on both sides of the mountain path. Why are there so many pines on the mountain?

The pine trees have strong vitality and deep roots. They can absorb the inorganic matter in the dry land and ensure the required nutrients. In addition, the leaves of the pine tree are needle shaped, which can make the water evaporate less, so that they will not dry and die. Because of the small resistance, they are easily blown down. Therefore, pines can take root and grow up in barren mountains.

Most of the pine trees on the mountain grow on the slope. When it rains, the soil on the slope is constantly washed down by the rain, washing away the nutrients needed by the plants. If it doesn't rain, the soil will easily dry out.

The roots of pine trees grow very deep and can absorb inorganic substances in poor and dry soil. In this way, the nutrients they need can be guaranteed and they will not "starve to death". At the same time, the leaves of pine trees are needle shaped, and their surface is smaller than that of ordinary tree leaves, to avoid excessive transpiration of water and "dry to death". The wind is strong on the mountain, but pine leaves are needle shaped, they are not easy to be blown down by the wind. This is the reason why pine trees can take root and sprout on barren mountains.

But pines don’t grow on all mountains. For example, there are no pine trees on Mount Everest since the altitude is too high and the climate is too cold, it is covered with thick ice and snow all year round.