Answer:
There are two primary scales used to measure earthquakes: the Richter scale and the Mercalli scale.
Explanation:
The Richter scale is most common in the United States, while worldwide, scientists rely on the Mercalli scale.
It is 1600 from the white house from the capitol
Answer: Well if you look at the questions all of these are plans so im not exactly sure but the most valid answer ould be ( B )
Astronauts in the future are planning to expllre mars because they think that it is possiable for humans to live on the planet mars.
Hope this helps in some way have a great rest of your day :)
The answer to your question is,
Two. The twin towers both collapsed.
-Mabel <3
Rectangle, Square, Rhombus, Parallelogram, and Trapezium