Final answer:
It is true that pumping fluids into Earth, such as through fracking or wastewater injection, can sometimes trigger small earthquakes. These induced earthquakes usually have magnitudes less than 5 and can occasionally cause minor damage near the site of fluid injection.
Step-by-step explanation:
The statement that pumping fluids into Earth can sometimes trigger small earthquakes is True. This phenomenon is associated with activities like hydraulic fracturing (commonly known as fracking) and the injection of wastewater into deep wells. These processes can increase pore pressure in the subsurface, which may in turn reduce the friction that holds geological faults together, potentially causing them to slip and trigger an earthquake.
The magnitude of these induced earthquakes is typically less than 5 on the Richter scale, but in some instances, they can be felt and cause minor damage close to the injection site.