Approximately 72 billion liters of milk are produced each year in the united states, from 8 million cows. on average, a single cow consumes 13500 kg of corn feed each year. it required 40 mj to produce a kilogram of corn feed, which contains 20 mj of energy. there are 15 mj of energy in a single liter of milk. calculate the energy efficiency of growing corn and converting it into milk.

If you have a green turn signal light, you must before making your turn. a. check the crosswalk b. yield to cross traffic and check the crosswalk c. turn off your car's turn signal d. none of the above

What is the american psychological association’s ethical principle of psychologists and code of conduct based upon? a. the work of a dozen world-renowned philosophers and ethical savants. b. the feedback of thousands of psychologists and their ethical struggles. c. the regulatory power and authority of the united states constitution. d. the hippocratic rules and guidelines of medical practitioners and surgeons. select the best answer from the choices provided a b c

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii