They are mid-ocean ridges<span>, which </span>form<span> where two tectonic plates are spreading apart, which is called seafloor spreading. Tectonic plates are large pieces of the earth's crust, and they interact in a number of ways. Where they pull apart is called a divergent plate boundary.</span>
May be due to the lack of water and rain. im not 100% sure but ill try googleing it too.
B... keeping people in line politically
Answer:
Magistrates: Can be appointed from the age of 18, and retire at 70; Are volunteers, and there are around 23,000 from all walks of life; Do not need legal qualifications (they are assisted in court by a legal adviser);
Explanation:
B nitrogen were trapped in rocks during extensive volcanic activity