Consider the 4 foods in order of the percent by mass of proteins, from lowest to highest. From food to food, as the percent by mass of proteins increased, the mass of food remaining at 28 hr: 1 point A. increased only. B. decreased only. C. increased and then decreased. D. decreased and then increased.

B. decreased only

Explanation:

If you look at the table 1 and order the foods by the percent of protein, and after you take a look at the graph, you'll see that the bigger the percentage of protein, less food remains.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.