Barn owls can eat up to 10 rodents per day. Farmers have constructed 60 “nesting boxesin this valley for the owls to use as their homes, which gives their babies a safe place to hatch. How will this affect the rodent population?

the rodent population will decrease.

Explanation:

by making safe homes for the owls the farmer decreases owl deaths. this results in more owls that need more food. even more rodents will be hunted, resulting in more rodent deaths.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.