However, the recommended humidity level is between 30% and 50%. During the winter months, humidity levels are low (sometimes very low). However, these levels skyrocket during the summer months. The high humidity during the summer reduces the rate of evaporation of moisture from our bodies.
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Best Answer: Natural rubber comes from the sap of rubber tree. Synthetic rubbers are made by the polymerization of a single monomer or a mixture of monomers to produce polymers.Rubbers are often vulcanised by adding sulfur to them, to make them harder and more durable.ating Newest Oldest. Best Answer: Natural rubber comes from the sap of rubber tree. Synthetic rubbers are made by the polymerization of a single monomer or a mixture of monomers to produce polymers. Rubbers are often vulcanised by adding sulfur to them, to make them harder and more durable.