At first you have to write the variables out which are

now you have to combine like terms


now you add these two variables and end up with answer of
Answer:
d.Modena and Parma didnt become part of sardinia
Try D. Tectonic plates are pushed apart partly due to convention currents
The type of rock that allows oil, natural gas, and groundwater to flow through them is known as reservoir rock and this can only occur if the rocks are permeable.
<h3>What is a Reservoir Rock?</h3>
This refers to the type of rocks that allows natural gases and fluids to go through them because of their permeability.
Hence, we can see that because the rocks have good permeability, that is they have the ability to allow minerals to flow through them, then this is known as a reservoir rock.
Read more about rocks here:
brainly.com/question/16479523
Answer:
about of people in the area
Explanation:
it is the amout of people or animals in a certain area