It takes about 9 months for a human embryo to develop. Embryos are nourished
by the mother, so substances she takes in will affect how well or poorly
the baby develops.
| NSES Content Standard C
Life Science: Life cycles of organisms Grades K-4, page 129 Plants and animals have life cycles that include being born, developing into adults, reproducing, and eventually dying. The details of this life cycle are different for different organisms. |