A farmer measures the potassium level in the soil before planting wheat, a type of cereal. the measured potassium level in the soil is medium.
based on the graph, should the farmer add extra potassium to get a better crop yield?

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