The correct answer is : Planetary accretion
In Planetary accretion theory, the universe was formed by accretion process, which is the accumulation of particles into a massive object by attracting more matter, forming all kind of astronomical objects such as stars and planets
Answer:
(d) increase by 100%
Explanation:
= initial mass of earth = m
= final mass of earth = (0.5) m
= initial radius of earth = R
= final radius of earth = (0.5) R
= initial acceleration due to gravity of earth = g
= final acceleration due to gravity of earth
initial acceleration due to gravity of earth is given as
Eq-1
Final acceleration due to gravity of earth is given as
Eq-2
Dividing eq-1 by eq-2
inserting the values
= 2 g
So there is 100% increase
The Suez Canal is a way of reaching the Mediterranean if you're in the Red Sea on a ship, and reaching the Red Sea if you're in the Mediterranean - without having to go all around Africa. It shortens the time of travel and very often the cost and is the only possibility for transporting goods that can spoil.
Answer:
1 - b
2 - c
3 - d
4 - a
Explanation:
Oasis can be simply defined as a contrasting geological feature that is located somewhere in the desert areas, and this land area is rich in valuable nutrients, enriching the fertility of the soil. Water also is found in this particular area.
Out-migration can be referred to as the process where people shifts from one place to another, and is mainly done in order to search for job and settlement purpose.
Pastoral nomadism refers to the those individual that are directly dependent on the domesticated livestock such as cows, sheeps, chickens and many other. They usually move into the region which is suitable for collecting pasturage for these animals and livestock.
Salinization can be defined as the condition when the amount of salt in the salt is higher than the usual amount.
Thus, the correct answers are matched above.