Oxygen gas was most likely absent from Earth's primitive atmosphere. The current theory is that the Earth's early atmosphere was composed of mainly carbon dioxide and methane due to the high volcanic activity. Cyanobacteria and their use of photosynthesis was what caused earth's atmosphere to become oxygen enriched.
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Answer:
The different types of storms are hailstorms, ice storms, snowstorms, thunderstorms, wind storms, hurricanes, and tornadoes.
Explanation:
Bohr's Model agree with Thompson's model because Bohr concluded that packets of energy are absorbed or emitted by the atoms when an electron changes shell. Thompson's conclusion states that atoms have small, negatively charged particles (referring to Electrons) as part of their internal structure.
Answer:
D. Stores calcium and phosphorus
Explanation:
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The precipitate formed in the reaction has been AgCl. Hence, option B is correct.
The precipitate has been the solid insoluble substance that has been formed as the product in the double displacement reaction.
The precipitate settles down in the aqueous reaction mixture and are resulted from the double displacement reaction.
<h3>Which one is the precipitate?</h3>
The reaction of silver nitrate and KCl has been:

The reactants in the reaction are in the aqueous form. Thus, silver nitrate and KCl are aqueous.
The potassium nitrate has been an aqueous solution, while the silver chloride has been the solid product that precipitates out.

Thus, the precipitate formed in the reaction has been AgCl. Hence, option B is correct.
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