I'm pretty sure these are the answers
A. depletion of oxygen in water
<span>Hypoxia </span>
<span>B. type of air pollution that forms when pollutants from factories and cars combine with water in the atmosphere" </span>
<span> Acid Rain </span>
<span>C. part of the stratosphere that protects Earth from harmful radiation" </span>
<span>Ozone </span>
<span>D. type of air pollution characterized by build up of dust, smoke and other particles in the air" </span>
<span>Smog </span>
<span>E. a factory smokestack is an example" </span>
<span>Point Source Pollution </span>
<span>F. organism such as bacteria or virus that can cause illness" </span>
<span> Infectious agent </span>
<span>G. agricultural runoff is an example" </span>
<span> Nonpoint Source Pollution </span>
<span>H. the major contributors to air pollution" </span>
<span>Combustion of Fossil Fuels</span>
It is easy to launch the outer gas of the star so that it escapes from the star ! the final stage of the sun's life will be the ejection of the outer helium and hydrogen layers . These outer layers are hot and glow. The glowing hot ejected gases called a planetary nebula.
Answer:
Explanation:
Oxygen gas and water must be present for iron to rust.
A region of the metal’s surface serves as the anode, where oxidation
occurs:
Fe(s) → Fe²⁺ (aq) + 2 e⁻
The electrons given up by iron reduce atmospheric oxygen to water at the cathode, which is another region of the same metal’s surface:
O₂ (g) + 4H⁺ (aq) + 4 e⁻ → 2 H₂O (l)
The overall redox reaction is:
2 Fe(s) + O₂(g) → 4H⁺(aq) + 2Fe²⁺ (aq) + 2 H₂O(l)
The Fe²⁺ ions formed at the anode are further oxidized by oxygen:
4 Fe²⁺ (aq) + O₂(g) 1 (4 + 2x) H₂O (l) → 2 Fe₂O₃ . xH₂O(s) + 8 H⁺(aq)
This hydrated form of iron(III) oxide is known as rust. The amount of water associated with the iron oxide varies, so we represent the formula as 2 Fe₂O₃ . xH₂O.
Answer:
The real correct answer would be a.
Explanation:
Covalent bonding occurs between Carbon atoms allowing Carbon to form stable molecules.
