Geese live in the north and south hemisphere. There is a population that lives in South America and population that lives in North America, even though they are the same species. Which of the following factors is most likely to contribute to gene flow between the two geese populations?

A. Genetic Drift
B. Migration
C. Random mating
D. Mutation

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the answer is golgi apparatus

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

request for reexamination