Answer:
c should be answer if not b but go for c first
The first inventions that harness natural energy resource is Water mill. Back then, people use the power of water to move the lever in order to create mechanical movement.
The invention that help transfer water from river to town is aqueduct. Or more commonly knwon as water bridgte, useful to navigate the movement of water.
Lever is the invention that makes lifting weight easier, mostly used in contruction sites.
The best option in terms of El Nino would be "<span>the cyclical warming of the Pacific Ocean near the equator," since this weather event is "expected" practically at the same time every year. </span>
Freedom and not being controled
