Sulfur and chlorine. Explanation: A covalent bond is formed by two non-metals with similar electronegativities. As a consequence, they share one or more pairs of electrons between their nuclei
Answer:
D. Many, many years of deposition
Explanation:
The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition.
The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through wind, water and ice over the ages.
Hence, the correct answer is D.
Products
Chemical reactions are characterized by the formation of new products, and the making and breaking of strong chemical bonds.
Ozone transforms back to oxygen pretty readily and quickly. thus, unless sunlight is present to make new ozone, the ozone level decreases.
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