"Look deep into nature, and then you will understand everything better."
—Albert Einstein
When I got to the prompt for the weekend engagement by 
Also, as they say, an image speaks more than a thousand lines of words. Yes, I agree! Now, combining this and the first quote, you will see the basic elements of land up to the highest thing symbolically representing the various craters or sections of the earth.
Starting from the lower part, there exists the rocky crust where, of course, rocks and sand (rocks in little quantities) are present. And this forms the foundation of anything ranging from construction to man-made goods.
Moving up the ladder, the next is the vegetation that grows naturally on the soil, either as weeds or by deliberate planting. Here, the plantains represent the vegetation. This is the stage that represents how the whole universe is nourished.
At this point, I realized there are more things in this image than I thought. We can see the unplastered wall brought about by the building blocks cemented together to form a solid one. This can be further stretched out to the fact that they are the ones, somehow, becoming the finished work of constructions ranging from housing to factories. You can see the roofs of the distant houses – the red and blue one.
Lastly, up at the peak of the ladder is what is generally called the atmosphere. This is where a mixture of gases such as oxygen, Carbon-dioxide, etc. exists. They have a series of functions they do for humanity. They help reduce the effect of the sun’s rays, site for the formation of rain or any other weather phenomenon like the snow, etc.
All these can be likened to the earth's chain of command from the bottom to the peak, that is, in terms of altitude representing from the ground (earth) up to the atmosphere.