A means of water erosion would not be C. natural water springs. Erosion occurs when water or wind removes rock, dissolved material, and soil from one location to another. All the other options describe water moving from one location to another, which accurately describes what erosion does. 
        
             
        
        
        
Lead emission since early 1980s have DECREASE DUE TO LEAD FREE GASOLINE. 
Lead is a natural occurring element that is found in small quantity in rocks and soils. Lead emission is an important environmental health issue because a very small quantity of lead can cause adverse effects on the nervous system of unborn babies and young children. Because of this, the government took all necessary measures to ensure that its emission was drastically reduced.
        
             
        
        
        
Animals, plants, fungi and bacteria use carbohydrates in varying ways. For plants, carbohydrates form a large part of their structure in the form of cellulose. Animals use carbohydrates primarily for energy, such as starch, glucose and other sugars. Bacteria use carbohydrates for both structure and energy. 
        
             
        
        
        
Answer:
As bactérias não contêm um núcleo. Explique como eles podem funcionar sem ele.
Explanation:
espero ter ajudado boa noite 
 
        
             
        
        
        
Answer:
The development of all karst landforms requires the presence of rock which is capable of being dissolved by surface water or ground water. 
Explanation:
- Eijiro <3