Diseases can re-emerge for a variety of reasons. evaluate the following statements and choose the one that does not provide evidence for a re-emergence.
select one:
a. climate change influences arthropods to expand their geographical areas.
b. pathogens evolve over time.
c. humans have avoided animal habitats.
d. agents of bioterrorism have been introduced into a population.

C. Humans have avoided animal habitats.

Explanation:

Emerging diseases are those diseases which occur frequently after a single tenure of infection. These disease poses a serious challenge over the immune system of the body and it becomes incapable of recovery and can also be lethal.

Humans have avoided animal habitats. is the correct option this is because of the fact that on rare instances the association of animals was proven to be infectious to humans. Thus animal habitat avoidance cannot prove to be the concern for the re-emergence of a disease.  

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.