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
Wheat, barley, and jujube were domesticated in the Indian subcontinent by 9,000 BC, soon followed by sheep and goats. Barley and wheat cultivation, along with the domestication of cattle, primarily sheep and goats; followed in Mehrgarh culture by 8,000–6,000 BC<span>.</span>
<span>The most volcanically active belt on Earth
is known as the Ring of Fire, a region of subduction zone
volcanism surrounding the Pacific Ocean. Subduction zone volcanism
occurs where two plates are converging on one another. One plate
containing oceanic lithosphere descends beneath the adjacent plate,
thus consuming the oceanic lithosphere into the earth's mantle.
This on-going process is called subduction. As the
descending plate bends downward at the surface, it creates a large
linear depression called an oceanic trench. These
trenches are the deepest topographic features on the earth's surface.
</span>
<span>The crustal portion of the subducting
slab contains a significant amount of surface water, as well as
water contained in hydrated minerals within the seafloor basalt.
As the subducting slab descends to greater and greater depths,
it progressively encounters greater temperatures and greater pressures
which cause the slab to release water into the mantle wedge overlying
the descending plate. Water has the effect of lowering the melting
temperature of the mantle, thus causing it to melt. The magma
produced by this mechanism varies from basalt to andesite in composition.
It rises upward to produce a linear belt of volcanoes parallel
to the oceanic trench, as exemplified in the above image of the
Aleutian Island chain. The chain of volcanoes is called an island
arc. If the oceanic lithosphere subducts beneath an adjacent
plate of continental lithosphere, then a similar belt of volcanoes
will be generated on continental crust. </span>
The only abrasion I know is scraping or a cut in not sure what your talking about
The other answer here is completely wrong, correct answer would be false and here is why:
So to protect 1 area of land you need one buff zone, right? One buffer zone on the outside edge to protect the edges of the inner core of the natural land that you want to protect.
That being said to protect 2 natural areas of land, you would need 2 buffer zones : 1 for each area.
Now granted, these buffer zones would cover a smaller area but there are more buffer zones needed for 2 or more Natural areas of land just based solely on the math simple math behind it.
Hopes this actually helps someone, and always feel free to ask me for help It's what I'm here for. Thanks!
