Salmonella enteritidis causes a food-borne illness that kills 400 to 600 americans each year. it is found mainly on poultry products. rather than give large doses of antibiotics to poultry, some poultry producers infect the intestinal tract of hens with a harmless bacteria, resulting in a dramatic decrease of s. enteritidis found in the chickens. in this case, the producers have used the principle of?

Salmonella enteritidis causes a food-borne illness that kills 400 to 600 Americans each year. It is found mainly in poultry products. Rather than give large doses of antibiotics to poultry, some poultry producers infect the intestinal tract of hens with a harmless bacteria, resulting in a dramatic decrease of S. enteritidis found in the chickens. In this case, what principle did the producers use?

A) mutualism

B) predation

C) competitive exclusion

D) parasitism

Answer is:

C) competitive exclusion

Explanation:

It states that two species that compete for the limited same resources cannot stably coexist if they occupy exactly the same niche

the answer to your question is sperm

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.