The Correct answer is A.
As snow becomes compressed , air between the flakes gets trapped. The process involving trapping of air occurs during burial of snow layers and is generally not complete until the bubbles are about 60 meters or more below the surface.
Once the bubbles have formed, they act as the time capsules of the atmosphere when they were trapped. By extracting the air from the bubble in ice cores, changes in the past can be studied .
Studies of these changes show the dramatic increase of what are called greenhouse gases such as carbon dioxide, caused by human use of fossil fuels, as well as natural changes that accompany glacial climate
The Gibraltar rock is a limestone, therefore it is a sedimentary rock. Sedimentary rocks are made by the dethronement and squeezing of small fragments.dimentary rock. It has sediments.
50% since in two squares it’ll be YY and the other two it’ll be Yy
Climate regulation, nutrient cycling, and other ecosystem services are economically valuable and essential for life on Earth.
