Answer:
Plants and animals release acid forming chemicals that cause weathering and also contribute to the breaking down of rocks and landforms.
Explanation:
sorry if im wrong
 
        
                    
             
        
        
        
Electrical conductivity tester. 
If the bulb begins to glow brightly when the plug is submerged in the unknown solution then the solution has high conductivity. 
The bright glow of the bulb resulting from the experiment indicates that the current flows easily through the unknown liquid.
        
             
        
        
        
Answer:
Fungi
Explanation:
Fungi are an example of saprotrophs i.e. organisms who live and feed on dead organic matter. Saprotrophic nutrition is described as chemoheterotrophic extracellular digestion. It involves the extracellular release of digestive enzymes on the organic matter. The enzymes break down the organic matter into a simpler form, which is then absorbed by the fungus.
 
        
             
        
        
        
Explanation:
nitrogen is converted from atmospheric nitrogen +N2) into usable forms ,such as NO2,- in a process known as fixation.