Aproblem of interest to health officials (and others) is to determine the effects of smoking during pregnancy on infant health. one measure of infant health is birth weight; a birth weight that is too low can put an infant at risk for contracting various illnesses. since factors other than cigarette smoking that affect birth weight are likely to be correlated with smoking, we should take those factors into account. for example, higher income generally results in access to better prenatal care, as well as better nutrition for the mother. an equation that recognizes this is

Abody cell has been growing and at synthesis proteins.in the nucleus of this body cell,dna replication is taking place. and a copy of the cells genetic material is copied.which of the following is the best conclusion you can make about the life cycle of this cell ? a) the cell is ready to undergo mitosis.and a chemical signal will send the cell to prophase b)the cell is undergoing meiosis and will cross over the genetic material next c)the cell is in the s phase of interphase and will move next to the g2 phase d) the cell is in the g2 phase of the interphase and is ready to begin diving