The correct option is A. 
A basic solution has a high concentration of hydroxide ions more than any type of ion and that is why it is basic in nature. An acidic solution has a higher concentration of hydrogen ions and that is why it is acidic in nature. A neutral solution has equal amount of hydroxide and hydrogen ions. Solutions are usually classified as either basic or acidic based on their hydrogen ion concentration.
        
                    
             
        
        
        
Answer: Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation, or rise to 100% frequency, of other alleles.Once it begins, genetic drift will continue until the involved allele is either lost by a population or is the only allele present at a particular gene locus within a population. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.
Explanation:
 
        
                    
             
        
        
        
During ecological succession of an ecosystem new organisms begin to grow and the ecosystem begins to recover. This is the way ecosystems repair themselves after a disaster.
        
             
        
        
        
Answer:
The unit rate. The gigabyte remains since it's already a unit value "Every one gigabytes." So,
Teen Mobile: $0.5 per day and $10 for every gigabyte. so, y = 0.5x + 10
Bruh-rizon: $1 per day and $7 for every gigabyte. so, y = 1x + 7
Explanation:
Teen Mobile:                                 Bruh-rizon:
x = Monthly                                    y = 30x + 7y
y = each gigabyte
y = 15x + 10y
 
        
             
        
        
        
Answer:
Nitrogen is removed from the atmosphere mainly by nitrogen-fixing bacteria in the soil and oceans (blue-green algae).
Explanation:
Nitrogen is removed from the atmosphere mainly by nitrogen-fixing bacteria in the soil and oceans (blue-green algae).