The correct answer is 4) They have ring systems.
Explanation:
Jovial planets are also known as Giant planets, they include Jupiter, Saturn, Uranus and Neptune, these planets are classified as Giant planets because they are massive although they are composed mainly of gas and light materials. Additionally, most of this planets have one or more moons and all of them have ring systems which are rings made of particles, dust, debris, ice and other materials that are placed around the planet and orbit it, although only the ring system of Saturn is visible and because of this it is the best known. Thus, the statement that describes Jovian planets is "They have ring systems".
Japan because it haven't experienced before
Answer: D. It can melt to a depth of a few meters in summer, then refreeze in winter.
Explanation:
Permafrost is ground which remains frozen for two or more years. Permafrost consists of soil, rock and sand fused together by ice. Mostly found in areas in high altitude, the Arctic, Antarctica, it is common in periglacial environments where temperatures are below freezing
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The topmost layer of permafrost can melt in summer and refreeze in winter. This thawing and refreezing produces a ground pattern called columnar joints similar to the one formed when molten lava cools.
We were far away from Germany, Italy and Japan. Water seperated the U.S. from the attacking countries so it was harder for them to attack the U.S.
I would say that the Rocky Mts were the youngest of all these mountain ranges as they were created between 80-55 million years ago during the Laramide Orogeny and also they are generally much taller than the other mountain ranges mentioned here which is a characteristic of young mountain ranges and their features are sharper as they haven't been eroded the way most of these others have so have been subject to erosion for less time than the others.
