Chloroplast and mitochondria. Only mitochondria is an animal.
        
             
        
        
        
Answer:
The earliest known life-forms on Earth are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 billion years ago, relatively soon after the oceans formed 4.41 billion years ago, and not long after the formation of the Earth 4.54 billion years ago.
Explanation:
 
        
             
        
        
        
Pillow lava is evidence of sea-floor spreading because the lava comes up out of cracks at the mid-ocean ridge and becomes newly formed rock. The farther away you get from the mid-ocean ridge, the older the rock is.
        
             
        
        
        
It is importantbecause you need the nutrients and protein in your body. 
                           
                                   Hope it helped!