Why was it useful for the apollo astronauts to bring magnetometers and seismometers to the moon?

The Apollo astronauts brought magnetometers and seismometers to the moon in order to see whether the Moon had a magnetic field, and if so, to see how powerful it was, and to detect seismic activity on the Moon.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.