Plants that are infected must be destroyed as the disease can be transmitted from plant to plant by contaminated sap. Symptoms include dark green ink bleed marks in the veins of yellow-colored leaves, and/or tissue collapse between veins.
Exposure to EMF and cancer. Magnetic fields are classified by the International Agency for Research on Cancer (IARC) as a possible cause of cancer, particularly for childhood leukemia. However, experts agree that there may be other explanations for the potential link between exposure to EMF and childhood leukemia. Until scientific evidence can clarify the link between exposure to magnetic fields from high-voltage power lines and cancer risk, you may not want your children to play directly beneath them for long periods of time.
Best Answer: There probably isn't a good way to answer this except to say that this is part of Maxwell's equations. The magnetic field produced is such that it would tend to oppse any change in current caused by the changing electric field.But to ask for aything deeper is actually asking why Maxwell's equations are true. And that is a very deep question with perhaps no good answer.he magnetic field produced is such that it would tend to oppse any change in current caused by the changing electric field.