Answer:
Both early protostars and young stars are formed from a clod of gas which collapses under gravity to form a star. Both types of star are mainly Hydrogen and some Helium. They would be 75% Hydrogen, 25% Helium with traces of Lithium. Young stars formed out of the remains of old stars would still be mainly Hydrogen. Another way to say it is Both types of star are mainly Hydrogen and some Helium. Early protostars would have been formed from the gasses that were created soon after the big bang. They would be 75% Hydrogen, 25% Helium with traces of Lithium. Young stars formed out of the remains of old stars would still be mainly Hydrogen.
Explanation: The moon changes its visual position relative to the earth during one night because the earth revolves around its axis. As the earth revolves around its axis it means that within a few hours an observer at a certain point on earth will, due to the earth's rotation, change the angle at which he sees the moon.
The fact that the moon also moves, that is, rotates around the earth, and that it takes about a month for a full rotation around the earth, is why we will see the moon in a different position in the sky at the same time next night.
Cartography and meteorology
Answer:
During the first phase, the population growth rate rises as the death rate declines while the birth rate remains high. In the second phase, the growth rate declines (but remains positive) due to a decline in the birth rate.
Explanation:
Answer:
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