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3 years ago

Explain why the Earth is constantly undergoing change? *

2 answers:

7 0

The Earth faces so much change so often because of several different reasons. Like the wonderful answerer down below said, gravity is in fact using its gravity to pull things, changing the surface in doing so. But this isn't the only reason. Another reason is because of all the human activity going on. Human activity is changing the world constantly. An example of this would be cutting down trees in an environment. This takes away air, killing more and more animals and such.

Many other reasons stand for the constant evolving of the planet we know and love.

ElenaW [278]3 years ago

4 0

Real quick, I will tell you why i think it does from a scientific point of veiw, but I dont know for sure.

The reason that the Earth goes through so much change on a regular basis is because of Gravity. What Gravity is doing is pulling objects to the Earth that it can reach (Which you probably knew) and so when it does this, it is pulling at the earths surface as well, causing constant change.

I hope this helps you!

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In the formation of a solution how does the solvent differ from the solute

dlinn [17]

Solute is a substance that dissolves in a solvent in order to form a solution. Solutes can be in liquid, gaseous or solid phase. Normally, in a solution, solutes are in a lesser amount than the solvents. When a solution has the maximum amount of solutes it can dissolve, then the solution is said to be saturated.

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3 years ago

Is hardness physical or chemical property

Afina-wow [57]

Answer:

The properties of the Hardness are:

Hardness is a physical property

Hardness is indicative of the strength of chemical bonds between elements.

Diamond can scratch quartz Explanation:

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3 years ago

12) _Na+ _H2O → ___ NaOH + __H2

TEA [102]

Answer:

Explanation:

2 Na+ 2 H2O → 2 NaOH + 1 H2

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3 years ago

According to the following position vs. Time graph the bicyclist was

julia-pushkina [17]

Answer:

According to the following position vs. Time graph the bicyclist was : D

D. Not moving for the first two seconds, then begin moving at the constant speed.

Explanation:

$Speed = \frac{Distance}{time}$

Along Y-axis = Distance in meters

Along X-axis = Time taken in second

For first 2 seconds the The object has not changed its position.There is Zero distance covered.So , Speed = 0
After 2 second,The Object changed the distance by equal amount in equal interval of time.(Uniform Speed).Hence at each point after 2 second, there is same value speed

3 0

3 years ago

Calculate the number of moles CuCl2 necessary to make 50 mL of a 0.15M solution

tekilochka [14]

Volume ⇒ 50 mL in liters : 50 / 1000 = 0.05 L

Molarity of solution ⇒ 0.15 M

Number of moles:

n = M * V

n = 0.15 * 0.05

n = 0.0075 moles of CuCl2

hope this helps!.

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2 years ago