The correct answer is 1.
An electromagnet is type of magnet in which a magnetic field is produced by an electric current.
However, the magnetic field disappears when the current is turned off. Therefore, it does not function without a source of current.
Answer:
Part A - The author provides several solutions for efficient and sustainable water systems.
Part B - It explains how accounting for water and water loss control are methods to achieve sustainability.
Explanation:
I took the test, trust me.
Heres a definition I found
look for or discover a meaning that is hidden or implied rather than explicitly stated
