Answer: the answer is C
Explanation:Ice wedging happens whenever water is able to get into small cracks in rock or other material and freeze. While freezing, the water expands and causes the crack to widen. If this happens many times (water seeping into the crack, freezing, expanding, and widening the crack), the crack will eventually break completely.
<span>Alright.. this is what I have in mind... then you can judge if I'm totally crazy:
As in any other experiment we wish to only hold 1 variable, while other thinkable variables are held constant.
In addtion to that we need to ref. soil and call that 0.
Now some theory: We know from medicals they can have synergetic effect if mixed. Same can go for nutrients, we therefor test each soil mixed and alone and see the effect.
We call the nutrients A, B and C, (continue with more if you like)
Now this is our setups:
0, A, B, C, AB, AC, BC, ABC.
In this way we can make compare to a ref soil (0) and also check for synergetic effects... this is a bit considered a multivariable experiment, but we also have A, B and C as ref. against the mixed soils.</span>
E united states of america
Explanation:
The Middle East is home to some of the world's most chaotic and violent war zones – including in Libya, Syria, Yemen and Iraq – as well as simmering conflicts in states such as Israel and Lebanon. And while these conflicts usually have multiple causes, religion and religious hostilities certainly are important factors.
