<span>About 2 weeks.
Since the species isn't mentioned, I will assume human.
Definitions
Colostrum: This is the fluid expressed by the breasts just prior to and for a few days after giving birth. It contains a much higher concentration of nutrients in an easier to digest form than regular breast milk. This type of breast milk will be produced for 2 to 4 days after giving birth.
Transitional Milk: This is a thick creamy milk that contains more fat, lactose, vitamins and calories than colostrum. It starts within 4 days of giving birth and lasts approximately 2 weeks.
Mature Milk: This is a thinner milk that's about 90% water and 10% nutrients. It starts about 2 weeks after giving birth.
So the answer is about 2 weeks.</span>
Explanation:
Incinerators are not helpful in reducing pollution as they produce a lot of ash and smoke so it increases the air pollution by burning of waste.
Solar and wind energy are the clean source of energies replacing the fuels. Catalytic converters reduce the air pollution from the exhaust fumes of vehicles.
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