Answer:
A rainbow is an optical and meteorogical phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc.
Answer:
The three sand are similar in composition, since all are formed 90% by quartz. They are also similar in roundness, as they all have large particles that allow a very sandy soil with low water retention.
Explanation:
The desert area of the river and the beach have a very similar composition, since 90% of these sands are composed of quartz. however, the similarity does not mean that these sands are the same, as they are not, since the sands of the beach and the river may have a little more material, such as animal remains, making these sands also have carbon in composition, something that desert sand has in less quantity.
In addition, both sands have large particles that promote strong aeration in the soil, but a very rapid loss of organic matter.
Try https://www.sciencedaily.com/terms/water_pollution.htm or https://www.britannica.com/science/water-pollution
Answer:
Olmec hieroglyphs (alternatively Olmec glyphs, Olmec writing, or Olmec script) designate a possible system of writing or proto-writing developed within the Olmec culture. The Olmecs were the earliest known major Mesoamerican civilization, flourishing during the formative period (1500 BCE to 400 BCE) in the tropical lowlands of the modern-day Mexican states of Veracruz and Tabasco.[1] The subsequent Epi-Olmec culture (300 BCE to 250 CE), was a successor culture to the Olmec and featured a full-fledged writing system, the Isthmian (or Epi-Olmec) script.
Explanation:
