If the initial amount of lead-196 is 3.6 g, how much lead-196 is left in the body after 74 min?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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