The canby’s dropwort grows in wetlands in georgia. it is an endangered plant because wetlands have been cleared for agriculture and construction. the larvae of the black swallowtail butterfly eat this plant. what would most likely happen to the black swallowtail butterfly if these plants continue to decrease?

Limiting factor is a factor which can limit the abundance, distribution of the species in an ecosystem this can be a resource, predator or natural disaster. The black swallowtail butterfly feeds on endangered plant named Candy's dropwort. If the plants continue to decrease the population of black swallowtail butterly will also decrease as decrease in the plant population will act as a limiting factor for the growth of butterfly population.

The number of butterflies will start to decline.

Explanation:

The butterflies' number will get reduce, as the larvae of the swallowtail butterfly consume the mentioned plant. The plants are declining in huge amounts and are becoming endangered primarily because of habitat loss as the wetlands in Georgia are getting cleared for the purpose of construction and agricultural activities.  

As the butterfly species totally rely on the plant as its sole source of nourishment their numbers will decrease as the population of the plant is also getting reduced.  

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