You have a solution with an unknown concentration of starch. Your first measurement is out of range of the spectrophotometer. You dilute your sample 4-fold and your next measurement gives you an absorbance of 1.75. What is the concentration of the original sample

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