 the unhealthy diet of a mother during pregnancy causes the embryo to be unhealthy & if a source of food is unhealthy then the organism consuming that food will be unhealthy -> the unhealthy tea of a dad during byproducts is harmful to the driver because the dad is a sink of poison for an farm through the pollination the unhealthy diet of a mother during pregnancy is harmful to the embryo because the mother is a source of food for an embryo through the placenta