1.regulate bodily functions
2.promote growth
3. Repair body tissues
4. Obtain enery
Experts agree that breast milk is the best nutrition for a newborn baby. Breast milk is the best source of nutrition for babies during the first 6 months, which contains immunity-boosting antibodies and healthy enzymes that scientists have yet to replicate. There are also long-lasting benefits of breastfeeding for both the mother and the baby.
Probaly mass production factories like air pollution or mining because that also pollutes and destroys the environment