Grain farming is done economic activity and this makes it comerical.
Answer:
》Planetary differentiation《
In planetary science, planetary differentiation is the process of separating out the different components within a planetary body as a consequence of their physical or chemical behavior (e.g. density and chemical affinities). The process of planetary differentiation is mediated by partial melting with heat from radioactive isotope decay and planetary accretion. Planetary differentiation has occurred on planets, dwarf planets, the asteroid 4 Vesta, and natural satellites (such as the Moon).
The correct answer is True.
Explanation
A constellation is a group of stars that when united by imaginary loops form a figure, these stars are connected imaginatively by loops to form these figures and are original from ancient cultures, mainly from the Middle East and Mediterranean Europe. The formation of constellations is due to the invariability of movement of the stars, on the other hand, the stars that form a constellation can be very far from each other and are only related by being part of a constellation. The celestial sphere is usually divided into two, the constellations that are to the north are known as northern constellations and those that are to the south southern constellations, these two are divided by means of the celestial equator. So, it is true, A constellation us a set of grouped into a figure.
The correct answers are:
- Nations will adopt a universal language;
With the globalization, more and more languages are becoming endangered, and very soon will be gone forever. The reason with this is that with the globalization, there's also a language that is spread around, the English language, and the majority of the young population is very fond of it and learns it, neglecting their own language in meantime.
- More languages will become extinct;
Because the spreading of a universal language seems to be taken place, with the English language being the front runner, and because the young generations tend to focus on it more than at their own language, the native languages will die out relatively quickly in the future, at least most of them.
Answer:
a. The nation has a large number of children, whose families must provide for them.
Explanation:
A high dependency ratio means those of working age, and the overall economy, face a greater burden in supporting the aging population. The youth dependency ratio includes those only under 15, and the elderly dependency ratio focuses on those over 64.
