What makes studying people difficult is that you are yourself. You will always be different from other humans, so studying them naturally takes you out of your comfort zone
        
             
        
        
        
Answer:
d) do all jobs for survival
Explanation:
A single cell perform all its activity on its own.
 
        
             
        
        
        
A part of the endoplasmic reticulum pinches off forming a transport vesicle.
        
             
        
        
        
Answer: Lungs
Step by step explanation: when you hit a baby and it cries when it is born, that is it’s first breath. Trust me, I’m a doctor. Hope this helps! Have a great day.