Which of the following choices would have a negative entropy change? A. H2O(s)−>H2O(l) B. CaCO3(s)−>CaO(s)+CO2(g) C. Fe2O3(s)+3C(s)−>2Fe(s)+3CO(g) D. N2(g)+3H2(g)−>2NH3(g)

Growing crops in places where major pests don't live using beneficial insects to eat harmful insects using a rat trap instead of a rodenticide developing drought-resistant tomato plants using beneficial insects or natural oils to repel pests planting a different crop every year to fake out the pests keeping food covered to deter ants and rodents developing bean plants with a resistance to fungus picking caterpillars off tomato plants cultivation practice biological control cultural control genetic resistance natural chemicals