Curing heart disease by regenerating damaged heart tissue.
Layers of cross-bedded sand can be indicative of a DESERT environment wind is responsible for the formation of these sedimentary structures. Sand dunes preserved in rocks can be quite large. These structures form as a result of the migration of dunes due to the action of the wind. Dunes are not often preserved but a few can be observed in thick sandstone units.
Answer:
The statement true about the Mercalli scale is "The scale rates an earthquake according to how much damage it causes."
Explanation:
The Mercalli Scale is a way to rate the earthquakes according to the level of damage at a given place. It got its name after the Italian seismologist Giuseppe Mercalli . The scale has 12 divisions. Lower numbers indicate intensity that is likely felt by people where as the higher numbers indicates the damage to structures and buildings. The ratings are given in Roman numerals. This scale is presently called as the MMI scale, or the Modified Mercalli scale.