What do sound waves and infrared waves have in common, and what makes them different?
both carry energy through space, but sound waves are mechanical and infrared waves are electromagnetic
both can transfer energy through matter, but sound waves travel through air and infrared waves travel through spa
both can transfer energy through matter, but sound waves can be heard and infrared waves can be seen.
both carry energy through space, but sound waves require matter to pass through and infrared waves do not.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.