Answer:
Explanation:
I’m pretty sure that stories differ because they are not proven and can be easily manipulated. Scientific explanations are proven and are probably fact.
Answer: Option (b) is the correct answer.
Explanation:
A covalent bond is defined as the bond that is formed by sharing of electrons between the two chemically combining atoms.
For example, in a molecule.
As the valency of each carbon atom is 4, valency of each hydrogen atom is 1, and valency of each oxygen atom is 2.
So, in each one outermost electron of carbon atom is shared by each one outermost electron of hydrogen atom.
The fourth outermost electron is shared by one outermost electron of oxygen atom and the other outermost electron of oxygen atom is shared by the hydrogen atom of -OH.
Hence, we can conclude that there are total 5 covalent bonds present in the formation of methyl hydroxide ( or methanol).
The presence of a large population of sludgeworms indicates water depleted of oxygen and a high level of organic pollution.
The sludgeworms Tubifex is harvested and sold as tropical fish food since it is common near sewer outlets and serves as a sign of water or organic pollution. Polychaetes are crucial in rearranging the silt on the ocean floor.
Organic contamination happens when too much organic material, such sewage or manure, gets into the water.
There will be more decomposers and sludgeworms in a pond as the organic content accumulates. These decomposers and sludgeworms develop quickly and consume a lot of oxygen as they do so.
Hence, Sludgeworms are a sign of an abundance of oxygen-depleted water and significant levels of organic pollutants.
Learn more about Water pollution here brainly.com/question/1235358
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<span>Magnesite and Olivine have compositions that are the most similar to calcite.</span>