There would be no release of organic nitrogen molecules back to their inorganic state. Dead material would accumulate to choke out livable habitat.
<span>Plants fix atmospheric carbon in photosynthesis and some species of bacteria fix atmospheric nitrogen so life would continue taking these into the organic cycle but without decomposing fungi & bacteria the cycle would not complete. However the final step of reduction to N2 is only completed by bacteria. In fact bacteria are critical to every step of the nitrogen cycle. </span>
<span>Fungi also decompose dead plants and animals so are detrital feeders putting nitrogen into the nitrogen cycle but not as N2. Fungi cannot reduce N2O to N2. So fungi make N2O as their denitrification product. True denitrification, like nitrogen fixing, does not occur in eukaryotes only bacteria. </span>
There's no options included so, I'm going to take an educated guess: insurance. (apologies if it's wrong)
~Hope that helped & Good luck!
I would say #1 #3 #4 are the most reasonable options. Healthy food doesn't really affect the communication of a disease and ultimately does nothing to change it. Eating French fries isn't going to give you malaria, but an increase in migration of infected animals will. Especially those who are sold illegally or trafficked across borders. And people not taking their vaccinations has caused an increase in illnesses we have gotten rid of years ago, like polio. #3 is also reasonable since people who travel all over the world, even if they don't get sick, might carry foreign illnesses that perhaps other countries don't have vaccinations for and infect others.
C. Consuming alcohol
Liver cancer
