Radioactive uranium decays into lead what relative amount of uranium and lead would the reader expect to five in the oldest rocks

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

What material does not melt at any temperature

Word equation for k+ h2o yield koh + h2