A teratogen is a(n): Group of answer choices fertilized egg that undergoes rapid cell division. unborn child with one or more physical defects or abnormalities. chromosomal abnormality. substance that can cross the placental barrier and harm an unborn child.

Pauling and lewis questioned the extreme definitions of bonds. they wondered if bonds might be described somewhere in between the two extremes (covalent and ionic). on the basis of experimental data,pauling confirmed that bonds could be ionic, covalent, and for those, in between, exhibit a degree of ionic character. he theorized that the major factor was how strongly the atoms in the bond attracted the electrons. pauling called this factor - the tendency of an atom to attract electrons in a bond.

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

Which statement best describes the flow of energy in this scenario