Final answer:
Embryotoxicity is considered a division 2 toxic material that can harm the developing embryo. Substances causing birth defects, like certain chemicals environmental toxicologists may study, are classified as toxic. DDT is an example of a chemical agent with known negative impacts.
Step-by-step explanation:
Embryotoxicity refers to the potential of a substance to cause harm to the developing embryo. In terms of hazard classification, a substance that causes birth defects is considered toxic. Therefore, embryotoxicity is a division 2 toxic material.
As an environmental toxicologist, when encountering a chemical that causes birth defects, one can conclude that the chemical has teratogenic effects. Such chemicals are classified as toxic because they pose serious risks to prenatal development. DDT, as an example, is recognized as a chemical agent that has been associated with a variety of negative environmental and health impacts.
Furthermore, from a health perspective, malnutrition is singled out as an important contributor to child mortality rather than being the primary source of teratogens or the leading cause of birth defects. This highlights the different factors that can impact human health and the complexities involved in attributing causes to various conditions.