Arrange the following features related to decomposition cycle in a terrestrial ecosystem in correct sequence?

(A) Fallen leaves eaten by insects and animals
(B) Trees grow in the soil
(C) Some nutrients leach into the soil
(D) Decomposition by earthworm and bacteria etc.

Choose the correct answer from the options given below.

(B), (A), (D), (C)

The correct answer is Option (1) → (B), (A), (D), (C)    

(B) Trees grow in the soil
(A) Fallen leaves eaten by insects and animals
(D) Decomposition by earthworm and bacteria
(C) Some nutrients leach into the soil

Step-by-step explanation:

(B) Trees grow in the soil

• The cycle starts with existing trees and plants. They produce leaves, branches, etc., which eventually fall.

(A) Fallen leaves eaten by insects and animals

• When leaves fall, insects and small animals start feeding on them. This is the beginning of the decomposition process.

(D) Decomposition by earthworms and bacteria

• After insects break down the material, earthworms, fungi, and bacteria decompose it further into simpler organic matter.

(C) Some nutrients leach into the soil

• Finally, nutrients released during decomposition seep (leach) into the soil.
• These nutrients are again used by plants, completing the nutrient cycle.

Therefore, the correct sequence is: (B) → (A) → (D) → (C)