One way to expand yields of crops is to increase the area under cultivation. This has few impacts other than an expansion of crop supply
What will be an ideal response?
As mentioned in short answer question 11 above, most of the desirable
agricultural land is already in production. Less desirable land remains that could be cropped,
but this entails difficulties. The land could be ruined permanently, irrigation could cause
problems, etc.
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If you double the absolute temperature of an object, it will radiate energy
A) 16 times faster. B) 4 times faster. C) 32. times faster. D) 8 times faster. E) 2 times faster.
Compared to clocks in a stationary reference frame, clocks in a moving reference frame run
A) slower. B) faster. C) at the same rate.
According to Alan Guth, magnetic monopoles are not observed in our universe because
A) they are theoretically impossible. B) space expanded so much that they are exceedingly rare. C) of the presence of electromagnetic radiation. D) they easily collapse under the force of gravity.
A uniform bridge span weighs 70.0 kN and is 40.0 m long. An automobile weighing 15.0 kN is parked with its center of gravity located 15.0 m from the right pier. What upward support force does the right pier provide?
a. 40.6 kN b. 51.3 kN c. 25.6 kN d. 44.4 kN e. 42.5 kN