Sand is a granular material composed of finely divided rockand mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.[1]
The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastalsettings is silica (silicon dioxide, or SiO2), usually in the form of quartz. The second most common type of sand is calcium carbonate, for example, aragonite, which has mostly been created, over the past half billion years, by various forms of life, like coral and shellfish. For example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean.
Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand.[2] Desert sand, although plentiful, is not suitable for concrete, and 50 billion tons of beach sand and fossil sand is needed each year for construction.
make a brainliest and follow me
Hello there, fellow human being!
The answer is D. unicellular.
Hope this helped!
~Ruru
The correct answer for this question would be option C. The environmental <span>condition that contributed to the heat wave experienced in Europe and the thousands of deaths in France is air pollution. A heat wave is when there is a prolonged period of abnormally hot weather. In this case, air pollution, having chemicals present in the air, contributed and worsen the heat wave. Hope this helps.</span>
Answer: A gene is the basic physical and functional unit of heredity. 1. A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. The terms dominant and recessive describe the inheritance patterns of certain traits.
