B, Magnitude of past earthquakes in the area
Answer:
Zoology is the study of animals. A predator is higher than the prey on the food chain. The predator hunts the prey and eats it.
C. Valley due to the changing in contour and line down the mountain
Given :
560 gram of silicon dioxide.
To Find :
Number of moles of silicon dioxide in 560 gram.
Solution :
We know, molecular mass silicon dioxide is 60 gram/mol.
So, number of moles of silicon dioxide in 560 gram is :

Now, one mole of any compound contain
.
So, number of molecules in 9.33 moles of silicon dioxide is :

Hence, this is the required solution.