I think the answer is A.hopes this helped.
Oxygen, carbon, and hydrogen.
Good job eliminating option D. Option A is reversed Mitosis occurs in somatic cells and Meiosis in germ cells. Crossing over results in genetic diversity or a change in DNA, that would happen in reproduction and thus meiosis. Option A, B, and D are not the answer. <u>Option C is correct.</u>
Some natural processes record the variations in time. For example, the sediments found on the rocks acts to be the great proof of the climate that existed in olden times.
Explanation:
Paleoclimatology is the study of climate records from hundreds to millions of years ago. Information for paleoclimate studies come from natural records. One of the most important natural record from which enormous information about the past climate can be known from the tree ring data. Another source include lake and ocean sediments that are found on the rocks and glaciers.
By measuring the width of Sample of tree rings, sediments , corals and ice, the chemical composition, and physical structure of each layer, scientists can also investigate the conditions present when each layer formed. The data of the natural records can be trusted as these prove to be the greatest source of study of ancient civilizations and how they survived in extreme climatic conditions.
Nutrition is the biochemical and physiological process by which an organism uses food to support its life. It includes ingestion, absorption, assimilation, biosynthesis, catabolism and excretion.
There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fibre and water
