According to a source the answer is <span><u>Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.</u>
These cyanobacteria species were the first ones to "produce" oxygen as a by-product of the photosynthetic mechanisms which enables organisms to make their own food. </span>
        
             
        
        
        
Hi! 
An example of a membrane would be Pericardium. This membrane in particular will cover the heart.
What is the Pericardium?
This membrane is a thin, double layered membrane which protects the heart from injuries as well as external blows.In between the membranes, there is a fluid known as pericardial fluid that is present. The function of this is to also protect the heart. 
Hope I could help!
-Peaculiar 
        
             
        
        
        
Answer:
They are both eukaryotic cells, plant and animal cells are structurally quite similar. The nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes are all membrane-bound organelles found in both.
Explanation:
 
        
             
        
        
        
Answer:
the energy is lost due to friction or air resistance or any opposing or resisting forcw for that matter