The decomposers are of two kinds, aerobic decomposers and anaerobic decomposers. The aerobic decomposers need the oxygen from the air to break down the dead and decaying matter into simple salts, sugars and hydrocarbon gases. The anaerobic decomposers do not require oxygen for the break down of dead and decaying matter. They break down the matter into various forms of hydrocarbons, sulphides and nitrogenous compounds.
When a dead and decaying matter gets buried deep within the Earth where there is an absence of the decomposers, it takes the form of crude oil, coal, peat, asphalt, and natural gas. The matter gets compressed by the weight of the rocks above and changes its form.
I think the answer is B
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Answer:
Yes, it can hurt one depending on the species, such as land animals having to be in the water for too long, it may drown, but it takes a certain amount of time to do so which means that for the most part, it is harmless.
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Carbon dioxide (CO2) is formed from one carbon atom bonded to two oxygen atoms. Therefore, carbon dioxide is a compound!
Answer:
<em>A. 38%</em>
Explanation:
Percentage increase = (Increase/original value)×100
P.I.C= (ΔC/C₁)×100 .................. Equation 1
Where P.I.C = Percentage increase in the concentration of carbon dioxide from 1790 to 2007, ΔC = increase in the concentration of carbon dioxide from 1790 to 2007,
C₁ = concentration of carbon dioxide in 1790.
But,
ΔC = C₂ - C₁............................. Equation 2
Substituting equation 2 into equation 1.
P.I.C = [(C₂ - C₁)/C₁]×100.................... Equation 2
<em>Given: C₁ = 278 ppm, C₂ = 383 ppm</em>
<em>Substituting into equation 2</em>
<em>P.I.C = [(383-278)/278]×100</em>
<em>P.I.C = (105/278)×100</em>
<em>P.I.C = 37.77%</em>
<em>P.I.C ≈ 38%</em>
<em>The right option is A. 38%</em>
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