A^2 + b^2 = c^2
18^2 + 9^2 =
324 + 81 = c^2
405 = c^2
take the sq root
= around 21.12
Answer:
D. Ocean - Atmosphere - Wind - Weather
Explanation:
- The El Nino (warm) and La Nina (cool) are the opposing phases of climatic patterns in the tropical pacific ocean and take place every 3 to 7 years. Combined they are called ENSO.
- First, in the El Nino ocean temperatures in the eastern tropical pacific ocean rise above average and this leads to rainfall over Indonesia and storms in central pacific. This rising air increases the air motion and leads to dryness and high surface pressure during the La Nina phase this condition gets reversed.
- During the El Nino, the northwestern pacific tends to be warmers and the southern tier of California tends to be cooler and wetter. These surface temperatures are caused and changed by the help of trade winds. These blows from east to west along the pacific ocean.
- These phenomena thus influenced the weather along the western and the eastern pacific ocean.
Answer:
it gave them water to use agriculture
