An engineer is building a new steel skyscraper in a area with a lot of Earthquakes, Compare two systems (fixed based system and base isolated system) and choose which one would be better.

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false