If Substance A has an LD50 of 20 mg/kg of body mass, and Substance B has an LD50 of 10 mg/kg of body mass, which substance is considered more deadly? Substance A is deadlier than Substance B. Substance B is deadlier than Substance A. Both substances are equally deadly enough to half a population. Neither of them are deadly because they do not reach at least 50 mg/kg.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave