 Tropical rainforests, first the contents, the definition of tropical rainforest, then the climatic conditions of tropical rainforests, the soil conditions of tropical rainforests and the plant life in tropical rainforests. So first the definition of tropical rainforests. Tropical rainforests are actually the forests which are present at the equator of Earth. So tropical rainforests, they have very moist environment, very ideal condition for the growth of the plants. If we talk about tropical rainforests, then the area where we call it the equator region, where we call it Khate Isthwa, the area of Khate Isthwa, that is actually the tropical region. So tropical rainforests are actually the richest forest of the Earth, the highest in number. So the climatic conditions. Tropical rainforests due to presence at the equator, so they are usually have one season. So if we look at it throughout the years, the same season, temperature variations, both slight variations in temperatures. The approximate temperature of tropical rainforests is from 20 to 25 degrees centigrade throughout the years. I mean the entire year the temperature is the same, there the precipitation level is very high. So the rainfall pattern, they are the extreme rainfalls, the rain is very high, the approximate rainfall is about 200 centimetres per year, more than 200 centimetres per year. So if we look at all the biomes, the tropical rainforest, the rain pattern is the highest which is the highest. So climatic conditions throughout the year are the same, humid temperature, high temperature, humidity is present, and because of the rain, they have an ideal environment for the growth. Soil conditions, soil is relatively nutrient poor, tropical rainforest soil has a little deficiency. What is the deficiency? Because environmental conditions are very ideal, so plant growth is very high. Whatever nutrients are present in the soil, they will be obtained in the foreign plants and in the plant's body, in the biomass, they will be tied up. This is why the maximum nutrients of the soil are actually locked up in the plants in the body of the plants. So if we look at the second pattern, when these plants die, the decomposition process is very quick, very rapid, because the temperature is high, humidity is high, so decomposers are also very active in the equator or a tropical forest. But as the decomposition happens, that material will be used by the plants for the further biomass synthesis. So the plants for biomass will be used to synthesise. So whatever nutrients are used in the biomass synthesis, ultimately soil and nutrients will have deficiency. So the plant life of tropical rainforest, tropical rainforests are the most diverse forest of the world. The most diverse forest of the world is the tropical rainforest. So a small piece of land may have thousands of species of different plants. So the species of plants are mostly present in the tropical rainforest. The important thing is that in the tropical rainforest, none of the plant species is dominating. If we look at the conifers in the conifers, they are dominating. In the grasslands, grass is dominating. Similarly, if we look at the deciduous forests, the deciduous plants whose leaves fall and the broad leaves are dominating. While in the tropical rainforest, all the plants have equal chance to grow. So overall, if we look at this, none of them is dominating. So species richness is very high. Even one actor of the land may contain 50 to 70 species of plants. If we look at the comparison, in the tropical rainforest, there are deciduous forests. So in the temperate deciduous forests, one actor can have maximum of 17 to 20 species. So in the deciduous forests, one actor can have species richness up to 20, 70 to 20. While in the tropical rainforest, the species richness is up to 70 species per actor. Most of the plants in the equator are the tropical rainforest. They are evergreen and they are broad leaf plants.