What of the following uses heat from deep inside the earth that generates steam to make electricity​

What is the original authority for copyright laws

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

On nba 2k 19, every time i try to join a my park game, it leads ro a website telling my dad that he needs ps plus. i already have ps plus though. how do i fix this?