To calculate the total pore space, we will find the difference between the mass of the soil when it is oven - dried and when it is saturated. Therefore, the value of the total pore space and total porosity are 45g and 45% respectively
Given that a 100 cm3 soil core weighs 78g when oven-dried and 123 g when saturated.
The given parameters are;
Volume of soil V = 100
Mass ( Oven dried) 
= 78g
Mass ( Saturated) 
= 123g
In the soil formation, pore space refers to the volume of soil. And to calculate the total pore space, we will find the difference between the mass of the soil when it is oven - dried and when it is saturated. That is,
Total pore space = -
Total pore space = 123 - 78
Total pore space = 45g
And total porosity will be the percentage of the ratio of total pore space to the given volume of the soil. That is,
Total porosity = (Total pore space / volume of the soil) x 100
Total porosity = 45/100 x 100
Total porosity = 0.45 x 100
Total porosity = 45%
Therefore, the value of the total pore space and total porosity are 45g and 45% respectively
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Answer:
ask to go to the bathroom and run some cold water on your arm and pat it on your forehead, if your still hot you should sit on the toilet and try to rest for a few minutes
That statement is true
The purpose of minimum wages is to make sure that every worker in united states (who worked at least 40 days a week) have enough resource to at least sustain the living of their family. So in cases of contradictory occurrence like this, the highest minimum wage will be used over the lower ones
The statement that is likely to occur in the future is new ethnicities will be formed, and old ethnicities will merge into one. The correct option is b.
<h3>What is ethnicity?</h3>
Ethnicity refers to a group's cultural identity, which is generally based on shared ancestry, language, and cultural traditions, whereas race refers to a taxonomic grouping based on physical similarities among groups.
The idea of race refers to the division of humans into groups based on diverse sets of physical features, as well as the process of assigning social significance to those categories.
Ethnicity describes a people's culture in a certain geographic area, encompassing their language, background, religion, and customs.
Therefore, the correct option is b, New ethnicities will be formed, and old ethnicities will merge into one.
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