Answer:
Explanation:
The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.
 
        
             
        
        
        
Answer:
Even in pure water ions tend to form due to random processes (producing some H+ and OH- ions). The amount of H+ that is made in pure water is about equal to a pH of 7. That's why 7 is neutral. ... In pure water near room temperature, the concentration of H+ is about 10-7 moles/liter, which gives a pH of 7.
 
        
             
        
        
        
Which stage of the cell cycle results in two identical cells?
Answer:
Mitosis because mitosis itself consists of five active steps.
Hope I helped
--Jay
 
        
                    
             
        
        
        
Answer:
Types of Wetlands
tupelo gum trees
Tupelo Gum Pond, Source: Missouri Dept of Conservation