Research major earthquakes on google, or another website. I would go with question 1, Where is your earthquake? I would do the Haiti earthquake where the earthquake is in Haiti. Do more research on Google, because I cannot provide you with a link to an article because Brainly will not allow me to do so. Just research "major earthquakes" in Google and you will be good to go. Hope this helped! 
        
                    
             
        
        
        
Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray Group 2 alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust. The ion Ca2+ is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.[5] Free calcium metal is too reactive to occur in nature. Calcium is produced in supernova nucleosynthesis.
        
             
        
        
        
Answer:
The correct answer is - roundworms.
Explanation:
The answer is already mention in the question, however, the detailed answer is as follows:
The characteristics that are given in the question are true tissues, bilateral symmetry, and a pseudocoelom. Worms or helminths are known as primitive form of organization of the Bilaterians. All three group of worms or helmints have a basic bilateral symmetry. 
These organisms inaugurated various characteristic that are found and carried by other animals such as  true tissues, bilateral symmetry, and a pseudocoelom.
Thus, the correct answer is - roundworms.
 
        
             
        
        
        
The Challenger Deep is in the southern end of the Mariana Trench. It is estimated to be 305meters deep.
        
             
        
        
        
The correct answer choice is D. Production of ethanol