<span>A CO2 molecule found a friendly stomata on the bottom of a leaf. As the sun rose, the leaf's cells opened up to let the molecule in through the stoma. Soon, it was moving around inside with other CO2 and water molecules.
Soon, the plant--powered by the sun--began re-assembling the molecule into new forms, adding and subtracting bits with other molecules, to make sweet glucose and release oxygen into the air.
A curious rabbit couldn't resist a few nibbles of the sweet leaves with their glucose, and soon the CO2 molecule, in its new form as glucose, was inside the bunny's belly, being converted into energy.</span>
        
             
        
        
        
<span>Pleural sac is a two
layered membrane formed when a serous membrane known as pleura folds back onto
itself. Thus, the pleura invest the lungs and line the walls of the thoracic
cavity. However, the potential volume of the thoracic cavity increases during
inhalation.</span>
 
        
             
        
        
        
Answer:
1. It seeps in the ground and becomes ground water.
2. It falls back down to earth as Rain, Hail and Snow.
3. Water moves through the living organisms in an ecosystem
4. Transportation is the process that moves things like water from one place to another.
Explanation:
I passed Biology last year in 10th so I recalled my biology stuff.
 
        
             
        
        
        
Fungi contain cell walls made of chitin.