Nitrogen Fixating bacteria ( such as cyanobacteria or clostridum) can convert gaseous nitrogen in the air into amonia, a compound that organism can use to make amino acid and other nitrogen-containing organic molecules
        
                    
             
        
        
        
Because it’s time consuming and money consuming to observe from space so models are required
        
             
        
        
        
Answer:
Option A
Explanation:
Options - 
A-avoid water pollution.
B-build thermal power plants.
C-add water features to gardens.
D-avoid drip irrigation systems
Solution - 
The largest source of freshwater on planet earth is underground water. The water beneath the surface of earth is very limited. The total fresh water reserve on earth is 3% of the total water on earth. Pollution due to discharge of waste water into the rivers and oceans has caused the degradation of not only surface water but also ground water.  
Thus, option A is correct
Drip irrigation is a means to prevent wastage of water during irrigation. Thus, avoiding it will cause further loss of fresh water.  
Addition of water feature will increase usage of water, thus it is also incorrect
Building thermal plant will also cause water pollution and wastage. Hence, option  B is also incorrect
 
        
             
        
        
        
Answer:
I think its 4
Explanation:
I don't think DNA is a lipid I just think it helps deal with lipids but is not a part of one I think that acid is a lipid tho but thats why I chose 4 may be wrong tho
 
        
             
        
        
        
Answer: The parents of the white cat would be a dominant white cat and a recessive colored coat cat.  The parents of the autosomal tabby would be a dominant tabby and either a recessive brown cat, striped cat, or a recessive black cat.
Explanation:
The genotypes and phenotypes would be : WW- Dominant white and ww- recessive color coat cat; their offspring would be 100% recessive white kittens 
TT- dominant tabby and a recessive brown cat; their children would be 100%- dominant brown tabby
TT- dominant tabby and a recessive striped cat; children would be 100%- brown striped
TT- dominant tabby and a recessive black cat; children would be 100%- tabby kittens