Species are normally subdivided into populations that are more or less scattered, that may be separated at one time, but may mer
ge together again, and successfully reproduce, at a later time. Tattersall and DeSalle describe this process as:_________ a. reticulation
b. speciation
c. phylogenesis
d. ontogenesis
Reticulation is a process which explains the origin of many organisms formed by the merging of the two lineages. The species are formed when the species in the evolutionary process got scattered, formed two lineages and then again reproduced and merged.
Studies suggest that the origin of many species in the angiosperm phylum is the result of the process of the reticulation.
Two important ways by which humans have affected the carbon cycle, especially in recent history, are: 1) the release of carbon dioxide into the atmosphere during the burning of fossil fuels, and 2) the clearing of trees and other plants (deforestation) that absorb carbon dioxide from the atmosphere
