If carbon dioxide is withdrawn from the biosphere,which organism would first experience negative effects?

Which one of the following statements is incorrect for secondary succession?

Identify the stage of hydrarch succession shown in the figure.

Assertion : In tropical rain forests,$O-$ horizon and $A-$ horizon of soil profile are shallow and nutrient-poor.
Reason : Excessive growth of micro-organisms in the soil depletes its organic content.

The dynamic system of an ecosystem depends on which of the following?

In the dry weight of living beings,$A$ $\%$ carbon is present. In the oceans,$B$ $\%$ of the total global carbon is dissolved. The total amount of carbon in the atmosphere is $C$ $\%$ of the total global carbon. Identify the correct values for $A, B,$ and $C$.