Answer: Humans and animals use the oxygen (O2) in the air for their energy process and produce CO2 as waste. A plant does the exact opposite. ... If there were no plants on the planet we wouldn't be able to breathe. Humans in particular, however, also produce other waste
Explanation:
 
        
             
        
        
        
Answer: I think the atomic radius decreases.
Explanation: The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.
 
        
             
        
        
        
Answer:
Influenza viruses and others continually change over time, usually by mutation. This change enables the virus to evade the immune system of its host so that people are susceptible to influenza virus infection throughout their lives. Bacteria mutate in the same way and can also become resistant if overtreated with antibiotics.
 
        
                    
             
        
        
        
Answer:
20 yeast cells
Explanation:
there are four cells after one budding so after 5 buddings there would be 20 cells
4 *5 = 20