Answer:
the word 'structure' in biology has the following meaning;
"<em>An arrangement or organization of parts to form an organ, system, or living thing</em>"
I think that the statement given above is true, Harmful environmental agents cause an average of 4-5 percent of birth defects. <span>About 10 </span>percent of birth defects<span> are </span>caused<span> by </span>environmental factors<span> such as infection, radiation, and drugs. Hope this answers the question. Have a nice day.</span>
Pests in food establishments are usually very good vectors of many types of diseases, not just food borne illnesses (rats for example used to carry the fleas that carry the bubonic plague). Pests are very good at contaminating foods, as they will not only contact food in storage, but they will eat (so contact with saliva), lay eggs or have their young around, and will defecate and urinate. This means that it is highly likely to cause some food borne or other illness.
