Convergent
boundaries or destructive plate boundary due to subduction, is an actively deforming
area where two or more tectonic plates of the lithosphere move towards one
another and collide. As an effect of pressure, plate material and friction
melting in the mantle, volcanoes and earthquakes are common near convergent
boundaries. Subduction or continental collision is created when two plates move
towards one another, depending on the nature of the involved plates. During
these collisions (between two continental plates) Himalayas and large mountain
ranges are formed.
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:
d.Modena and Parma didnt become part of sardinia
