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Maslowich
3 years ago
14

Why is sandstone considered a rock and NOT a mineral? What characteristics of a mineral does it not meet? Answer in at least 2 s

entences
Biology
1 answer:
Anarel [89]3 years ago
7 0
Sandstone is a clastic sedimentary rock which is composed mainly of sand sized mineral particles or rock fragments. The major minerals found in sandstone is feldspar and quartz.
Sandstone is not considered to be a mineral because, it did not meet all the criteria of mineral substances. Sandstone does not have a crystalline structure. 
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Atlantic halibut is a species of flatfish that uses gills to extract dissolved gases from water for cellular respiration. During
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The population of fish would slowly begin to die out as the deeper the water the less dissolved gasses there are.
6 0
3 years ago
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In Whitetail deer, there is a gene for coat color. Brown coats (B) are
ahrayia [7]

Answer: All of the offspring are brown. The chances of getting a brown deer is 100%.

Explanation: The buck is homozygous dominant, meaning he has two of the brown (B) allele. The doe is white, and since the allele for a white coat is recessive, it has to have two white (b) alleles.

Set up a Punnett square with BB on one side and bb on the other. The results of this are 4 offspring all with the genotype Bb. Because brown (B) is dominant, all of them are brown.

To find the chance of getting a brown deer, take the number of brown deer (4) and divide it by the total number of outcomes (4). This gets you 4/4 or 1. As a percent, that would equal 100%.

4 0
3 years ago
Although selection operates against deleterious alleles in populations, they are rarely lost from these populations. For example
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Answer:

Deleterious alleles appear sporadically in a population

Explanation:

A population with a deleterious allele will have no or few individuals that have the ability to pass along these traits. These alleles appear less in a population because of selective pressure but they are not always absent. The alleles appear less often but are are not always passed on and the others that are genetically fit are able to pass along their genes. The reason the population equilibrium is not zero is because these alleles do appear but they are not necessarily passed along. These individuals may not be able to reproduce or reach the age of reproduction.

Deleterious alleles appear more often, making individuals less fit genetically, i.e. they pass fewer copies of their genes to future generations. Put another way, natural selection purges the deleterious alleles.

3 0
3 years ago
Describe how a person's activity level can affect their health
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It really can. Just trust me!

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if a characteristic is X-linked it A. occurs mostly in males. B. occurs mostly in females. C. is always fatal. D. isn't any diff
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A. Occurs mostly in males. 

Hope this helps. [:
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3 years ago
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