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
Answer:
Artificial selection can be described as the method by which organisms with the desired characteristics are crossed so that offsprings with better qualities can be produced.
Although artificial selection is an effective way to produce organisms with better traits, yet this technique has some consequences of its own. Growing plants and animals through this method will lead to lesser genetic variety. In the future id any disaster such as a disease infects the organisms then the entire population will be eradicated as there will be little or no genetic diversity at all.
Answer:
I think you should divide 76/100. That is probably what "q" stands for
Explanation:
Ferns reproduce by spores, Conifers reproduce by seeds. Differences also exist in the root and stem structure. Neither Ferns nor Conifers have true leaves, Ferns have fronds and most Conifers have needles.
Hope this helped.
