二、生长发育的因素 (Factors of growth and development) ●遗传 genetics ●性别gender ●内分祕endocrine 。孕母情况pregnant condition ●营养nutrition ● 生活环境living environment ●疾病diseases二、生长发育的因素 (Factors of growth and development) ⚫ 遗传 genetics ⚫ 性别 gender ⚫ 内分泌 endocrine ⚫ 孕母情况 pregnant condition ⚫ 营养 nutrition ⚫ 生活环境 living environment ⚫ 疾病 diseases