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.
Radiometric dating is dating a rock or mineral by measuring the proportions of an original radioactive material and its decay products. We need to know the rate at which radioactive decay occurs and <span>how much radioactive decay has occurred. Hope this answers the question. Have a nice day.</span>
Answer:
A. Distinction of the various rings of saturn.
Explanation:
The important discoveries of Hubble space telescope were on discovering the age of the universe, finding the depths and expanse of the universe, along with researching on the black holes and finding visible wavelength images. Finding planets in the inner solar system like Pluto, and an outer solar system like Exoplanets.
Answer:
1. 15°S 60°W - Brazil
2. 60°N 110°W - Canada
3. 25°S 135°E - Australia