How many gallons of water does it take to produce the following: a. Cheeseburger
b. Pound of butter
c. A pair of jeans

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system