The answer is a. basalt. Gabbro rocks are more related to basalt in terms of chemical characteristics. They are both igneous rocks but basalt is an extrusive rock that cools quickly while gabbro is intrusive and cools slowly. So, basalt rocks are fine-grained while gabbro are coars-grained.
        
             
        
        
        
The results that have been produced from the improved agricultural practices are the following: increased biodiversity, increased productivity, and increased profits. Improved agricultural practices aim to produce food for consumers that are safe and wholesome. If these agricultural practices are improved and applied, there will be an increase in biodiversity as well as increased in productivity. If there is an increase in production, there is an increase in profits.
        
                    
             
        
        
        
The passing of genetic material from parents to offspring is called Heredity.
Thus, C, is your answer.
        
             
        
        
        
Answer:
Oh gosh, thank you! (I feel like this'll get deleted, so here are the answers: Tony Stark became Iron man when he was in like this military place? I don't know the exact details, but when people were trying to fight him he made a suit to fight back. The suit was surprisingly powerful, so he re-made it to be more appealing, light-weight, and stronger. 
All he has to do is change into his suit. He doesn't actually have any superpowers, unless you consider being really smart a super power)
 
        
             
        
        
        
The plants that were allowed to self pollinate were the F1 plants. 
The plants that are true breeding are P generation plants. 
The plants where there were 3times as many tall plants as short plants are in F2 generation. 
<h3><u>Explanation:</u></h3>
This question is based on the Mendel’s Experiment. Sir Gregor Johann Mendel was the father of genetics who experimented on garden pea plants <em>Pisum</em> <em>sativum</em> to see whether the characters got mixed or not and to know the real cause behind different traits of same character in plants. 
He took the pure homozygous tall and short plants separately which he called as parental generation or P generation. These plants were homozygous, hence pure breeding. 
As these plants were crossed between themselves, then the F1 generation showed all tall plants. This is because of the heterozygous plants which showed character of dominant trait. These plants were allowed to self pollinate. 
As a result of self pollination of the F1 plants, the F2 plants were 75% tall in number whereas the other 25% short, which gave the phenotypic ratio of 3:1.