True or false. If Americans decided to eat more chicken and less beef, the future size of the chicken population would increase and the cattle population decline. True False True or false. Resources that are commonly owned are likely to be over-utilized and poorly maintained. True False True or false: Ocean fisheries are generally owned in common; as a result, the quantity of various species such as salmon are often overfished.

The given first statement is true, that is, with the increase in the demand for chicken, the chicken market will rise, and in the same way with the decline in the demand for beef, the production of cattle will decrease based on the law of demand.  

The given second statement is also true, as the resources mentioned in the given statement is a tragedy of commons as the common access resources are rivalrous and non-excludable.  

The given third statement is also true, as the mentioned ocean fisheries is a tragedy of commons as the common access resources are rivalrous and non-excludable.  

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.