Jupiter, Saturn, Uranus and Neptune are referred to as the Jovian Planets, or planets that are essentially big balls of gas, each are surrounded by many moons and rings.
Unlike Terrestrial Planets like the Earth, these planets lack solid surfaces and they have relatively small, dense cores that are surrounded by layers of gas, which is made mostly of hydrogen and helium.
Jupiter and Saturn is different from Uranus and Neptune because the first pair is made almost entirely of hydrogen and helium and some hydrogen compounds, while the latter pair are made primarily of hydrogen compounds with smaller traces of hydrogen, helium, metal and rock.
As for the planets' interior, both Jupiter and Saturn have layers of metallic, liquid and gaseous hydrogen extending outward, topped with a layer of visible clouds.
On the other hand, Uranus and Neptune have cores of rock, metal, water, methane and ammonia. The layer surrounding the core is also made up of hydrogen that is covered with a layer of visible clouds.
Answer:
Working age population declining
The number of female babies killed, abandoned, or placed in orphanages increased as a result of the policy. Even after the one-child policy was rescinded, China's birth and fertility rates remained low, leaving the country with a population that was aging too rapidly as well as a shrinking workforce
A fraction scale is depicts a portion of an object or geographical feature on a map. While a linear scale has equal divisions for equal values.
<h3>What is the fraction scale of 2cm = 30Km?</h3>
1 km = 1000 m, and 1 m = 100 cm.
=> 1 km = 1000 × 100 cm = 100000 cm
=> 10 km = 10 × 100000 cm = 1000000 cm
From the question, 2cm represents 30Km, Hence,
2cm represents 3,000,000 on ground
=> 1 cm represents (3,000,000 / 2) cm on ground
or 1cm represents 1,500,000cm on the ground.
Thus, the The representative fraction of the scale is 1 : 1,500,000.
This means that 1 cm on map represents 1,500,000 cm on ground.
Learn more about linear scales at;
brainly.com/question/19381630
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Answer:
D) Phosphorous catches fire in air.
An anticline - it is in an arch-like shape and its oldest rocks are located at its core.
