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Brums [2.3K]
3 years ago
15

What approximate percentage of the Earth’s freshwater is groundwater?

Chemistry
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

The correct answer is c. 30%

Explanation:

Groundwater is that found below the earth's surface. Groundwater is contained in aquifers. An Aquifer is a geological formation or a part of it, consisting of a permeable material capable of storing a certain significant amount of water. Aquifers can consist of different material, such as sedimentary permeable rocks such as sand stones or mud stones.

In general, it maintains a temperature very similar to the annual average in the area, therefore, in arctic regions, it can freeze.

Groundwater represents around 30% of the world's fresh water.

<u><em>The correct answer is c. 30%</em></u>

grigory [225]3 years ago
4 0

the answer is c.) 30%

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Sveta_85 [38]

Answer:see attached photo for answer

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Cell division occurs to ensure the continous existence of life.

Mitosis involve producing daughter cells with the same number of chromosomes as the parent cells while meiosis involves producing daughter cells with Half number of chromosomes.

4 0
3 years ago
A balloon originally had a volume of 4.39 L at 44C and a pressure of 729 torr  to what temperature must the balloon be cooled
VMariaS [17]

The new temperature : 11.56 °C

<h3>Further explanation </h3>

Boyle's law and Gay Lussac's law  

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

P1 = initial gas pressure (N/m² or Pa)  

V1 = initial gas volume (m³)  

P2 = final gas pressure  

V2 = final gas volume

T1 = initial gas temperature (K)  

T2 = final gas temperature  

V₁=4.39 L

T₁=44+273=317 K

P₁ = 729 torr = 0,959211 atm

V₂=3.78 L

P₂= 1 atm

\tt \dfrac{0.959211\times 4.39}{317}=\dfrac{1\times 3.78}{T_2}\\\\T_2=\dfrac{1\times 3.78\times 317}{0.959211\times 4.39}\\\\T_2=284.559~K=11.56~C

3 0
3 years ago
The observed brightness of a star depends on which factors?
dimulka [17.4K]

Answer:

b..............

Explanation:

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When you add heat to a solid the particles gain energy and start to vibrate faster and faster.
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7 0
2 years ago
Read 2 more answers
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s344n2d4d5 [400]

Neutralization reactions are the reactions type which form salts.

Explanation:

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The reduction or addition of electrons will be occurring in cations and the oxidation or removal of electrons will be occurring in anions.

So the salt formation is based on neutralization reactions.

8 0
3 years ago
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