What is one major difference between sandstone and slitstone

1 answer:

3 0

Siltstone and sandstone are both granular materials but they are distinguished by grain size. The Wentworth scale places silt particles between 0.0039 to 0.0625 mm. This is smaller than very fine grained sand.

Siltstone and Sandstone may have identical mineralogy. They are generally comprised of quartz, feldspar and rock fragments. Because siltstone is comprised of smaller grains, it has smaller pore throats, resulting in lower permeability and higher capillary pressures than in an equivalent porosity sandstone.

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The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus

ivanzaharov [21]

Answer:

The correct answer is - relative refractory period.

Explanation:

The relative refractory period is a period that stimulates a secondary response if the stimuli are greater than the normal. It occurs when partial repolarization after a nerve fiber fired.

The relative refractory period is one of the two types of the refractory period which is the relative and absolute refractory period. In the absolute refractory period, it is not possible to activate another action potential in membrane.

Thus, the correct answer is - relative refractory period.

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4 years ago

You observe an individual of your favorite study organism expressing the dominant phenotype for a certain trait. how would you g

spayn [35]

If it is the same dominance as usual it is homozygous

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3 years ago

Drag each label to the correct location on the image.

ratelena [41]

Answer:

The offsprings of this punnet square will be Dd, Dd, dd and dd in a ratio 1Dd : 1dd

See attached image for punnet square completion

Explanation:

This question involves a cross involving a single gene with alleles D and d where allele D is dominant over allele d i.e. D will mask the phenotypic expression of d in a heterozygous state.

This cross is between a heterozygous parent (Dd) and a homozygous recessive parent (dd). Parent Dd will produce gametes D and d while parent dd will produce gametes d and d.

Using these gametes in a punnet square, four possible offsprings with two distinct genotypes will be produced. The genotypes are: Dd and dd in a ratio 1:1

Hence, the possibility of having a heterozygous dominant offspring is 1/2 while the possibility of having a homozygous recessive offspring is also 1/2.

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3 years ago

Buffers are chemicals that do all of the following except

OLEGan [10]

Which Buffers are you referring too?

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3 years ago

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time

eimsori [14]

The best and most correct answer among the choices provided by the question is the second choice "It would swell to a point."

A hypotonic solution is any solution that has a lower osmotic pressure than another solution. In the biological fields, this generally refers to a solution that has less solute and more water than another solution.

I hope my answer has come to your help. God bless and have a nice day ahead!

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3 years ago