Why is salt so precious in the rain forest?

Salt in the rainforest contains more nutrients.The salt can become clouds.
In the ecosystem of the rainforest,plants are important contributors to the development of mist and clouds.
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Sexual reproduction is one type of biological reproduction wherein the genitals of the male and female organisms engage into a sexual activity in order for the sperm cells to fertilize the egg cells of the females. 
In the case of most plants, they engage in asexual reproduction.