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3 years ago

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Porosity decreases Choose one: A. when fluids passing through a rock dissolve parts of the rock. B. with the cementing of sedime

nts by mineral grains from groundwater. C. with decreasing compaction of sediments or rock. D. when rocks develop joints or faults.

1 answer:

Yakvenalex [24]3 years ago

5 0

The answer is A
i did the test and i got it right

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What ethnic groups make up the population of Latin America?

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Native Americans make up<span> the majority of the </span>population<span> in Bolivia idk if that help but there you go.

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3 years ago

For some developing countries, which of the following is a disadvantage of the globalization of culture? A. People do not learn

kipiarov [429]

I would say that the globalization of culture can have the effect of B. Local traditions decline or are lost. For example, where McDonald's comes into a country, with its' take out food, this can work against sitting down and eating together of people and supporting a style of rushed eating on the go on an individual basis.

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Which of the following is not classified as a theme of geography?

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Answer:

if there is not one of those that will be your answer

Explanation:

five themes of geography location place human environment interaction movement and region

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3 years ago

A rock is radiometrically dated to determine its age. The laboratory doing the dating discovers that the rock currently has 200

Soloha48 [4]

Answer: The rock is 2000785 years old.

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = initial amount of the reactant = 800

x = amount of daughter isotope = 600

a - x = amount left after decay process = amount of parent isotope = (800-600) = 200

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{1000000}=0.000000693years^{-1}$

$t=\frac{2.303}{0.000000693}\log\frac{800}{200}$

$t=2000785years$

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3 years ago

The luminosity of a star changes throughout its life. For a star of 1Msun, rank the stages a. Red against just before the helium

MrRa [10]

Answer:

d. Proto-star at the end of the Hayashi track.
c. On the main sequence.
a. Red against just before the helium flash
b. Horizontal branch
e. White dwarf

Explanation:

The protostar is a new star that is formed at the end of the Hayashi track and is luminosity temperature relationship of infant stars that are less than M 3. The protostar ends its period and becomes a Tauri star that is extremely luminous.

After which the main sequence of the stars are formed is the next stage in stellar evolution and is dependent on its mass like the sun after this period the star turn red as it has a hydrogen-rich core and it starts to branch out displaying extreme density.

The last stage is the white dwarf star as the star has degenerate and left is the exhaust core which is very dense.

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3 years ago