It illustrates the cycling of matter, just like in a natural ecosystem.
Option D.
<h3><u>Explanation:</u></h3>
The natural stable ecosystem is defined as the ecosystem which has the members doing their part of job and each and every member contribute to the stability of the ecosystem by completing food chains.
Here in this bottle ecosystem the boy put the stones, rocks, water which gives proper nutrition to the growing plants and animals which are also introduced by the boy. The plants produce oxygen and consume carbon dioxide whereas the animals consume oxygen and produce carbon dioxide. Thus the cycle is maintained and stability is achieved.
The cell is in a hypertonic solution. Because there are more solutes outside the cell, the water will flow outside the cell in order to restore equilibrium.
<span>C) Bacterial genes are organized into operons, clusters of coregulated genes, that are regulated such that they are all turned on or off together. </span>
