Question

Red pine trees are currently found growing in only the cool northernmost areas of the central and eastern United States. Climate change is expected to have an impact on the distribution of the species. Which of the following describes the most likely change to the distribution of red pine over the next 200 years?
A. Red pine will grow in only the wetter areas of the southeastern United StatesB. Red pine will spread to large areas of the SouthwestC. The total number of red pine trees will decrease, but red pin trees will continue to grow in the same location as they grow currently.D. Red pine distribution will shift northward into CanadaE. Red pine distribution will expand southward to Caribbean nations

Answer 1

Answer:

correct answer is option D (Red Pine distribution will shift northward into Canada)

Explanation:

Forest tree species are expected to endure significant population changes

in response to warmer temperatures across the United States.Red pine forests are negatively impacted  by extreme summer heat, especially those

that have not been thinned.  Red Pine species can be adapted to a wider range of climate, several subtropical and tropical pines, have a high degree of genetic variation and tolerate a wide range of climates. Performance in multi-site provenance trials shows that they are adapted well to a wide range of climates Thus they may also be able to adapt to new climatic conditions in their natural habitat.

Their are other factors which also influence red pine occurrence like soil conditions, plant competition. These factors are likely to be additional constraints for the present species distribution and future distribution shifts.

From these factors it is found that Red pine distribution will shift northward into Canada over the next 200 years.