Answer:
the annexation of Hawaii in 1898, which allowed the United states to gain possession and control of all ports, buildings, harbors, military equipment and public property
Answer:
Option (4)
Explanation:
Seismic P and S waves are generated during an earthquake that has the potential to propagate through the interior of the earth. P waves are also known as the primary waves and they move in a compression and extension way in their direction of propagation. S waves are shear waves. This P waves travel faster than the S waves and can travel in both solid as well as in liquid. Whereas the S wave can travel only through solids. They get absorbed when they reach the core-mantle boundary. These two waves are helpful in determining the epicenter of an earthquake by recording the arrival of these waves.
Hence, the correct answer is option (4).
The scientists that are concerned about increased carbon dioxide in the atmosphere believe global warming is caused by human actions.
Explanation:
The global warming is a fact, but there is a big debate about the main causes of it. On one side are the scientists that believe that the human actions are the main cause of the global warming, on the other side are the scientists that believe it is strictly a natural process, and in the middle are the scientists that believe it is caused by both the human actions and the natural processes.
The scientists that believe that the global warming is caused by the human actions often discount the natural processes and their importance. The human actions increase the effect of the natural processes, but lot of scientists tend to exaggerate the human effect. If the trend of carbon dioxide input into the atmosphere by the human activity at this rate, then in the future it will most probably became a very important factor, while for now is relatively low when compared to the natural processes.
The majority of the carbon dioxide from the human activities comes from:
- burning of coal
- combustion of oil
- burning of wood
This is mainly done through:
- industry
- transportation
- agriculture
- heating of homes
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Answer:
D
Explanation:
Wind can be described by its direction and speed. Wind direction is described using the direction from which it is blowing. Westerly winds move from west to east, while easterly winds move from east to west. Wind speed can be described using measurements like miles per hour or levels on a scale called the Beaufort scale. The Beaufort scale divides wind speeds into categories and uses specific words for different strengths of wind. A “breeze” is a light wind, while a “gale” is stronger. On the Beaufort Scale, the strongest breeze is 31 miles per hour; any wind over 32 miles per hour is considered a gale.
