This relates because at first the human species are vulnerable to the new disease but as natural selection in human evolution occurs the human species will be able to overcome the disease and become invulnerable.
        
             
        
        
        
(D)an atom can join with other kinds of atoms.
Basically he explained what a molecule is. 
 
        
        
        
Answer:
Pneumocystosis
Explanation:
Pneumocystosis is an infection of the lungs. Its causative organism is the microorganism Pneumocystis carinii. Pneumocystosis is nearly entirely and completely observed in individuals that have a immune systems that have been weakened and diminished by AIDS or chemotherapy. Pneumocystosis is majorly a terminal occurrence in AIDS patients.
 
        
             
        
        
        
Answer:
The Last Universal Common Ancestor (LUCA) is the most recent common ancestor of all current life on Earth, estimated to have lived some 3.5 to 3.8 billion years ago
pls mark brainliest 
Explanation:
 
        
                    
             
        
        
        
Answer:
begins in the mouth(ptyalin converting carbohydrate to maltose), stops in the illeum (secretion of amylase) and Is completed in the body cells(to release energy)