Well my theory Is that we need rock because, Rocks are soil, soil gives us plants, crops and grains which we need to survive, and plants also feed livestock so in a way we couldn't survive with out rock.
The sun is so important to us on Earth because it provides us with light and heat. There would be no life on Earth if it wasn't for the sun. The Earth would be a big frozen rock.
Is important because it tells us about our history and who we are.
It is important to us cause it gives us food
because they are they are SO important to us because they can help us
it's layers of rock tell us about the past
See "Why is ozone so important to us?"
it is important to us because if we didn't have it we will be flying around in space.
Minerals are too important to us. They are useful for many purposes.
I believe this is the wierest asked question i have seen so far. Roads are important to us so you know where your going.
Scientists are important to us so we can study people who can't write properly.
Because the smoking can affect our health seriously. So it is important for us not to smoke.
so we can survive !!