A farmer has developed a new type of fertilizer. this new fertilizercosts 20% more to produce than the old fertilizer but has better results. the same land now produces 25% more crops each year. which statement best describes one way the farm will be affected by using this new fertilizer?

a: the farms marginal cost for fertilizer will increase
b: the farms marginal cost for fertilizer will decrease
c: the farms opportunity cost for using fertilizer will increase
the farms opportunity cost for using fertilizer will decrease

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

because his fleet was much lager than the english fleet. i hope this .

answer; the region experienced a surplus of food;