Answer:
<h2>false</h2>
Explanation:
<h2>the need of energy release or enargy addition</h2><h2>is debatable for any chemical reaction.</h2><h2>however with DNA replication. we are not adding</h2><h2>a nucleotide in a random process dispersing</h2><h2>energy to no avail.</h2>
 
        
             
        
        
        
Answer:
The animals could change it. For example, a bunny could dig a hole in the ground, making a home for other animals inside of it, too, changing the animals' living environment.
Or natural disasters could change their environment, too. For example, if a landslide occurred and covered a pond, frogs and snakes could lose their living areas and food, which would make them have to move to a different area, changing another ecosystem.
 
        
             
        
        
        
Blood enters the pulmonary vein with close to 100% of the blinding site for oxygen saturated. 
        
             
        
        
        
.Oxygen free environments
.Concentrated salt water and hot
. Acidic water of sulfur springs
        
             
        
        
        
Answer:
D. anything in the atmosphere.
Explanation: