There is a few condition to ensure a high-quality CPR accomplished:
1. Depth= At least 5cm or 2 inch
2. Complete Recoil= Let the chest return to normal
3. Frequency: At least 100 times a minute
4. Minimal interruption = don't stop too much
5. Avoid hyperventilation: Don't give too much air
Answer:
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.” The greatest concentration of volcanoes has been found in Antarctica
Explanation:
hopes this helps
Polar bears have large paws so that their body weight spread our over more space on the ice.
Imagine then as snowshoes for a human. They keep you up =).
Hope that helps! =)
If the earth did not rotate on its axis then the atmosphere would only circulate on its poles and the equator in a simple back and forth pattern.