<span>D. the angle of their slope is greater than 40 degrees.
</span>Oversteepened slopes often lead to mass movements because <span>the angle of their slope is greater than 40 degrees.
</span>
NOT:
A. the angle of their slope is between 50 and 60 degrees.
<span>B. plants cannot grow on them. </span>
<span>C. the angle of their slope is less than 50 degrees. </span>
Answer: C) soil vapor extraction
Soil vapor extraction is the relevant approach that uses vacuum pressure to evaporate and remove the volatile and semi volatile organic contaminants present in the soil. The gas that evaporate from the soil is either treated so that it does not cause any ill effect to the environment or completely destroyed. It is a soil remediation process.
Answer:
An ionic bond forms between two ions of opposite charges. In ionic bonding, electrons transfer from one atom to another. The elements take on either a negative or positive charge. Ions are another name for charged atoms. Some elements are electropositive, and some are electronegative.
Hope this helps!
In a crystal, the molecules are closer together as they are in any solid. they have less room to move, and might even be combined together rather than individual
