Answer:
The demographic transition model is characterized by relatively low growth rates at stage 1 and stage 4.
Explanation:
A is not correct because the demographic transition model has proven to be very reliable over time and that it manages to predict the population dynamics very precisely.
B is not correct because it is not just Russia's population that has been predicted well, but it is the case for most of the countries.
C is not correct because the demographic transition model has more than two stages.
D is not correct because this model doesn't predict that technology will be used to extand the limits of food production, thus it is not portrayed in a negative manner.
E is correct because stage 1 has high birthrates and high death rates, the population is still living in more primitive manner and bad conditions, and the growth is very mall, while stage 4 is the stage where the population is living in good conditions and has a high standard of living, with birthrates dropping, and the population gradually aging.
B. Marco Polo, I just got this answer right on my test
Answer:
2,000 years
Explanation:
The Earth magnetic field is the magnetic field that comes from inside the Earth and goes out into the space and interacts with the solar wind. This magnetic field is affected by solar storms, solar wind and other solar events that interfere with radio transmissions or that cause aurora in northern latitudes.
However, the magnetic shield is not constant and it has been changing, moving north/south to the poles (that's the magnetic pole) and it is contemplated that it will be out of North America in some years and below the Antarctica.
Scientists also think that the magnetic field may actually reverse orientation and they give an estimate of 2,000-2,500 years for this to happen.
Thus, Evidence shows that Earth's magnetic field is diminishing with time and may reverse orientations by the end of the next 2,000 years.