for better research go to under NOAA - Climate.gov
This is a short paraphrased summary of the article about ice cores in that website.
Answer: Researchers in labs may melt or crush bits of the ice core a little at a time, each deeper layer shows the time in the Earth's climate history. Tiny pieces of pollution, metals, radoiactive fallout, pebbles, sea salt, volcanic ash and even air bubbles all present important information that researchers can look for to track changes in the atmosphere's composition and temperature.
Answer:
a. City A
Explanation:
City A has the highest saturation vapor pressure among other cities because it has highest temperature and dew point as compared to another cities. Temperature is related to saturation vapor pressure, if increase in the temperature occurs, the average energy of the particles is also increases. It means that more particles have enough kinetic energy to escape from the surface of the liquid as a result it increase the saturated vapor pressure and the region has the highest saturation vapor pressure.
it formed a moon for earth half of the earth came off and now it is considered our moon