B. there are four hemispheres in the world
1.Southern hemisphere
2.Northern hemisphere
3.Western hemisphere
4.Eastern hemisphere
Answer:
True I think, you didn't finish the question. but if it's asking different from scientific law then true
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.
The tropical forests can roughly be divided into two major groups, tropical evergreen forests and tropical deciduous forests. The division is made in accordance to the characteristics of the trees.
The trees in the tropical evergreen forests are green throughout all of the year. The reason behind this is that they have constant temperature all year long, and constantly high amounts of rainfall all year long, so there is no need for them to shed their leaves.
The trees in the tropical deciduous forests, on the other hand, are shedding their leaves. This means that in one part of the year these trees have green leaves, while in the other part of the year they are shedding their leaves and the branches are stripped. The main reason behind this is that the rainfall occurs only seasonally, when pretty much all rainfall for the year falls in few months. After that, a very long period of drought and very high temperatures starts. In order to survive and not get damaged, the trees are shedding their leaves, thus they almost put them selves in an hibernating phase until the next rainy season.
