Answer:
evolution of life on Earth
Explanation:
Life began on Earth at least 3.5 to 4 billion years ago, and it has been evolving ever since. At first, all living things on Earth were simple, single-celled organisms. Much later, the first multicellular organisms evolved, and after that, Earth's biodiversity greatly increased.
 
        
             
        
        
        
Answer: D) the central and peripheral nervous systems 
hope this helps
 
        
             
        
        
        
Answer:
Squamous cell carcinoma presents with a firm, nodular lesion topped with a crust or with a central area of ulceration. 
Explanation:
The nurse is providing home care instructions to the client who just had surgery for squamous cell carcinoma. The nurse provides follow-up teaching and explains to the client to watch for squamous cell carcinoma presents with a firm, nodular lesion topped with a crust or with a central area of ulceration. As we know "Squamous cell carcinoma" most generally emerges as a firm, soft, or hyperkeratotic papule either plaque, besides with convenient ulceration. 
 
        
             
        
        
        
Answer:
unicellular life first
Explanation:
it arose billions of years ago while multicellular life forms around at least 600 million years ago
 
        
             
        
        
        
Answer:
 Not all bats hibernate. Even though bears and bats are the two most well-known hibernators, not all bats spend their winter in caves. Some bat species like the spotted bat survive by migrating in search of food to warmer areas when it gets chilly. 
Explanation:
the answer is d