Arrange the steps in the process of carbon cycle starting from the substances which possess a mixture of hydrocarbons in a proper sequence.
(1) sea water`" "`(2) dead remains
(3) aquatic plants`" "`(4) `CO_2` in the atmosphere
(5) organic matter`" "`(6) fossil fuels

Options

A. 3 1 4 5 6 2
B. 6 3 4 1 2 5
C. 4 1 3 2 5 6
D. 6 4 1 3 2 5

Explanation

To arrange the steps in the carbon cycle starting from the substances that possess a mixture of hydrocarbons, we need to understand the flow of carbon through various forms in the environment. Here is the correct sequence:

1. **(6) Fossil Fuels**: The carbon cycle begins with fossil fuels, which are formed from the remains of ancient plants and animals that have undergone chemical changes over millions of years. These fossil fuels are a mixture of hydrocarbons.

2. **(2) Dead Remains**: When organisms die, their remains contribute to the organic matter in the ecosystem. This organic matter can eventually lead to the formation of fossil fuels.

3. **(5) Organic Matter**: The dead remains decompose and become organic matter, which is rich in carbon. This organic matter is crucial for the growth of plants.

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