Answer;
Nitro.
Explanation:
By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%. Although humid air seems like it contains a lot of water, the maximum amount of water vapor that air can hold is only about 4%.
 
        
                    
             
        
        
        
The evolutionary effects of the genetic drift are the greatest when the population is small.
In small populations, genetic drift can significantly change the frequencies of the alleles and affect the genetic structure of the population. In big populations, the effects of the genetic drift are small and insignificant.
        
             
        
        
        
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.
 
        
             
        
        
        
Yeah owls don’t mainly say boa though
        
             
        
        
        
Question
Choose the correct order for the production and secretion of a protein.
A. nucleus - rough ER - golgi complex - plasma membrane
B. golgi complex - nucleus - rough ER - plasma membrane
C. Plasma membrane - golgi complex - rough ER - nucleus
D. nucleus - smooth ER - golgi complex - plasma membrane
Answer:
A. nucleus - rough ER - golgi complex - plasma membrane
Explanation: