Natural ecosystems are able to maintain a vibrant diversity of life because they incorporate intricate recycling systems that conserve essential materials.
        
             
        
        
        
Answer:
Yes,
Explanation:
Africa is poor country. There are many people live with family so hard.American regions population ruch man.
 
        
             
        
        
        
<span>b. stratosphere</span>
Researching is composed of various explorations in utilizing the scientific method in the process. It also, answers any scientific inquiry with the use of scientific method. Research enables and promotes the scientific community at a larger scale. Contributing and collaborating knowledge all-over the people and persons in science. Researches play a big role in everyone’s academic identity because 
<span>1.       It actively makes the individual scientific in approach to things of curiosity and makes him/her use the knowledge to study and produce results which</span> <span>
2.       The scientific society will benefit by this particular study and can work together to better explore and discover.   </span> 
        
                    
             
        
        
        
In the absence of any forces, no force is required to keep an object moving. ... Skipping Newton's second law (arguably the most important law for our purposes ) for ... mean that the movements are equal (or that the objects will stop moving). .... However, if we had forgotten to reset acceleration to zero, the gust of wind would ...
        
             
        
        
        
It's Saudi Arabia. 
Hope this helps!