Scientists discovered changes in Earth's interior by studying . O tsunamis

O changes in seismic waves

O all of the above

O tides

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond

The most effective way to provide children with safety messages is to