In response to scientific understanding about food-borne disease, what have scientists and health officials recommended be used to keep people safe without affecting the taste or nutrient content of foods such as lettuce and other vegetables?
a. antibiotics
b. hand washing
c. irradiation
d. pasteurization

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Using the periodic table, complete the table to describe each atom. type in your answers

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland