Answer:
Explanation:
Nuclear fusion occurs in the core of a star. Stars use the process of nuclear fusion to convert hydrogen to helium, and this process provides energy for the star, making the star very hot and bright. When the star runs out of either hydrogen or helium and nuclear fusion in a star's core stops, the star is no longer creating energy. Without energy, the core cools and the outer layers of the star begin to expand and become less bright, and the star will eventually either collapse or explode.
Answer:
The main gases which play an important role in maintaining the temperature of the atmosphere are carbon dioxide and the water vapours. As the altitude increases, the concentration of these gases in the atmosphere decreases (due to gravity), which consequently results in decrease of temperature, which means there is not enough CO2 and water vapours to keep increasing the temperature.
Hope that helps...
8. Filipinos have genetic similarities, 99.9 of their DNA are the same.
9. Physical characteristics can be influenced by climate and heredity. Living in an environment has natural effects on changes and evolution of man, including its physical characteristics
11. Because of the successive colonizations of their country and trade with different nations. This made a chance for some Filipinos to get married to foreigners. This affected the physical features of their sons and daughters and their family line.
22. Queens is a place in New York City that is believed to be the most diverse urban place having almost half of the population as foreigners. However, Africa is the most diversed country in the world compared to Queens because their genetics revealed that they have 100 bloodlines that make their ancestors hard to trace.
Answer:
The correct answer is - the direction of the points of the V shapes on contour lines.
The contour lines can tell us a lot about the shape of the relief structures on the maps, and of the things that we can also see is the path of the rivers. When the rivers are running through a steeper part, practically their upstream, because they manage to cut and shape the relief structures around them, the contour lines take up a specific V shape. The points of the V are always on the river itself, and they point to the direction from where it is coming from, thus following the points of the V shape can bring us very easily to the upstream of the river.
