Answer:
Water evaporates and ends up in clouds high up in the atmosphere. Since it is colder in the upper atmosphere, the clouds condense.
 
        
                    
             
        
        
        
If we subtract the atomic number from the weight, we get the number of neutrons in the particle. This is because protons and neutrons each have a weight of 1, while electrons are 0. And since the atomic number is also the number of protons in the atom, subtracting it from total weight gives us the number iif neutrons.
        
             
        
        
        
Answer:
B. oxygen and carbon dioxide. 
Explanation: 
During cellular respiration, organisms uses oxygen for breakdown of food molecules such glucose and carbondioxide gas is released in the atmosphere. Respiration is a process in which energy is produced in the form of Adenine tri phosphate (ATP) and releases carbondioxide by the chemical combination of glucose and oxygen molecules. The type of respiration in which oxygen is used is known as aerobic respiration. 
 
        
             
        
        
        
Answer:
Mitosis produces genetically identical daughter cells.
 
        
             
        
        
        
A Organism, but I would say Multi Cellular Organism instead of just organism because a Unicellular organism only has one cell, and all higher levels are made of multiple cells