B. Trees. it should seem obvious since biotic is the biological factors in an environment and abiotic is the geographical.
Answer:
The correct answer is option B, Trees
Explanation:
The biotic component of an ecosystem includes all living things. Among all the given options, except trees all are non-living things. A biotic components has the ability to move, breathe, eat, grow, reproduce, die, show locomotion and degrade into useful nutrients after dying (when attacked by decomposes), a tree is able to do all the essential activities which a living organism can do.