Answer:
The correct answer is the third statement.
Explanation:
This is because the first and last statements are completely incorrect as irrigation systems had to do with routing water from streams and lakes, into farms in order to hydrate plants. The second answer is technically correct in my opinion, because once flood season came farmers used irrigation lines to re-route water to reservoirs or other places besides their farms. Although, this was not the main purpose of irrigation systems.
Answer:
Tokio....................
Absolute magnitude measures only a star's luminosity.
It's a number that tells how bright a star would look if ALL stars were the same distance from Earth.
Answer:
Option (C)
Explanation:
A barrier island is usually defined as a long and narrow type of land that is dominantly comprised of sand particles and are oriented parallel to the coastal mainland.
The presence of a barrier island protects the coastal rocks from getting eroded by the strong water waves, wind, and tidal effects. This acts as a barrier and there lies a lagoon between the coastal landform and the barrier island.
It plays an important role in the ecosystem as it provides valuable nutrients and minerals, supporting a large number of living species.
Thus, the correct answer is option (C).
