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) Even-aged stands are more vulnerable to bark beetles accurately describes a benefit or a drawback of managing an even-aged tree plantation .
Explanation:
Even - aged structure is called as the stand that has one distinct size and age . These types of plants are composed of fewer species than any other structures .and even less diverse .
Bark beetles are vulnerable to mature tress , older , even - aged stands that have regrown or been replanted after any disturbance events ,
For example , The wildfire is more younger and more diverse stands.
