Which of the following materials is the least porous? loosely packed gravel sorted sand and rock unsorted sand and rock large pebbles and boulders

Answers

Answer 1

Answer:

The answer is The unsorted sand and rock is the least porous. The porousness of a solid material is dependent on the size of holes within it. This can be tested by how quickly, the material can pass a liquid through it. The bigger the holes, the higher the porousness, In this case, the unsorted sand and rock have the smallest holes between its particles.

Answer 2

Answer:

Large pebbles and boulders materials is the least porous. Correct option is D.

Large pebbles and boulders are the least porous among the given options. Porosity refers to the percentage of void space or openings (pores) within a material that can hold fluids like water, air, or other substances. It is a measure of how much empty space exists within the material.

In the given options:

a. loosely packed gravel: Gravel generally has larger particles and may have relatively higher porosity compared to other options.

b. sorted sand and rock: Sorted sand and rock may have some porosity depending on the grain size and how well-packed the particles are, but it is likely to be less porous than loosely packed gravel.

c. unsorted sand and rock: Unsorted sand and rock may have varying porosity depending on the mixture, but it is likely to be less porous than loosely packed gravel.

d. large pebbles and boulders: Large pebbles and boulders have minimal pore space compared to the other options. The particles are relatively large and leave less room for open space between them, resulting in lower porosity.

So, the material with the least porosity among the given options is "d. large pebbles and boulders."

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Complete question is:

Which of the following materials is the least porous?

a. loosely packed gravel

b. sorted sand and rock

c. unsorted sand and rock

d. large pebbles and boulders

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A septic system is an example of a _______________ source of water pollution.A. nonpoint
B. point
C. watershed
D. datapoint

Answers

Answer:

A. nonpoint

Explanation:

Septic related to the harmful bacteria and the contaminated particles that are harmful particles that is injurious to the ecosystem.

As the examples of the septic sources include the pollutant that doesn't have source and thus have the nutrient that stops the growth, the nutrient is a pollutant that is river runoff and occurs form a variety of sources like the agricultural forest and the urban areas and also results from form many diffused form the

An example of the sepic pollutants is tanks, public wells and another contaminated body of water, that have an undesirable amount of bacteria viruses and the other contaminant so if the groundwater, etc.

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In 2001, scientists announced that they had discovered a species of dinosaur called Albertaceratops nesmoi that they believed to be an ancestor of another better-known dinosaur species. How would scientists have determined that this newly discovered species was related to other known species of dinosaur? A) Scientists made careful observations of behavioral patterns. Eliminate B) The DNA mutation rates for both species was calculated and compared. C) Scientists made a detailed analysis of the fossilized bones of each species. D) The enzyme activity of each species was studied to determine similarities in metabolism.

Answers

Answer:

C) Scientists made a detailed analysis of the fossilized bones of each species.

Explanation:

Scientists made a detailed analysis of the fossilized bones of each species. This detailed analysis of the fossilized bones provided scientists with direct physical evidence of the similarity of the two species.

Which South American country has the highest population density?

Answers

We would be looking for a rather small country with a relatively population. It would also probably not include land that is relatively uninhabitable: mountains or jungle or deserts.

The correct answer is: Ecuador. Its population is 16 million and the population density is 55 people per square kilometer.

The Amazon is the world’s __________.A.second-longest river
B.fastest river system
C.third-largest river system
D.deepest river

Answers

I belive that the answer is A

Answer:

A.second-longest river

Where is the largest reservoir of carbon?

Answers

carbonate rocks, like limestone dolomite's, and chalk on earth

carbonate rocks is the largest reservoir of carbon

What is the range of pressure in Earth’s interiorwhere rock with a density range of 9.9 to
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(1) 0.2 to 1.4 million atmospheres
(2) 0.8 to 2.3 million atmospheres
(3) 1.4 to 3.1 million atmospheres
(4) 2.3 to 3.5 million atmospheres

Answers

The range of pressure in Earth’s interior where rock with a density range of 9.9 to 12.2 g/cm3 is found to be 0.8 to 2.3 million atmospheres. The answer is number 2. The rest of the choices do not answer the question above.

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