Answer:
igneous rocks are made from molten,and therefore rarely have fossils in them.Metamorphic rocks are squished,put under pressure,and get heated to the extreme,so it's very rare for fossils to survive in these conditions.
 
        
             
        
        
        
Answer:
47.5 g of water can be formed 
Explanation:
This is the reaction:
CH₄  +  2O₂  →  CO₂ + 2H₂O
Methane combustion.
In this process 1 mol of methane react with 2 moles of oxygen to produce 2 moles of water and 1 mol of carbon dioxide.
As ratio is 1:2, I will produce the double of moles of water, with the moles of methane I have.
1.320 mol  .2 = 2.64 moles 
Now, we can convert the moles to mass (mol . molar mass)
2.64 mol . 18g/mol = 47.5 g
 
        
                    
             
        
        
        
Answer:
The answer is option b.
Explanation:
Amplitude is the distance apart each wave is.