A recent study found that a relatively walking program of 12 weeks for men between 63 and 72 years of age brought about a decrease of fat weight.

he is right its short term,

BUT YOU SHOULD MAKE ME BRAINLIEST NOT HIM!!!

>:D

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.