True. During the period of early infancy, the effects of androgen (testosterone/male hormones) is questioned due to behavior. In a male's first few weeks of life, their testosterone levels rise.
Endocrine system regulates hormone production, Estrogen is one of the hormones
Estrogen regulates women's reproductive cycle. Also plays role in keeping bones strong n healthy. After menopause estrogen levels dramatically falls and women experience bone loss and osteoporosis. So, women population affected the greatest.
PS. Women start out life with less bone density then men already.
This depends on if the mother passes down a heterozygous brown eye gene or a homozygous one. If it is heterozygous then the baby will have a 50/50 chance for both colors.
I'm assuming that the mother passes a homozygous gene since they didn't specify in the question, so in that case the baby will have brown eyes. This is because the baby would inherit one dominant and one recessive gene, and the dominant gene will cover up the recessive gene. You can make a punett square to see this too.