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Triss [41]
2 years ago
12

15. A geologist discovers a sample of fine-grained rock made up of very small crystals. Based on its physical appearance, what c

an the geologist conclude about the rock?
Biology
2 answers:
Kipish [7]2 years ago
7 0

Answer:

It formed from rock that cooled quickly

Explanation:

B.

kiruha [24]2 years ago
6 0

Answer:

It is an extrusive igneous rock

Explanation:

Based on the physical appearance, the geologist can make an accurate conclusion about the rock's formation and in which type of rocks does it belong. The fine-grains made up of small crystals give away clues about the formation of the rock. Fine grains with small structures occur when the lava reaches the surface and cools off very quickly, thus not giving the crystals enough time to grow, so they are very small. The geologist can classify this rock on base of this information as an igneous rock, as it has been formed from lava, and as an extrusive igneous rock, as the fine grains and small crystals only occur when the lava cools of quickly on the surface.

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Please help im having trouble with biology
shusha [124]
Okay, to start off, the basic difference between prokaryotic cells and eukaryotic cells is prokaryotic cells are cells without a nucleus, and eukaryotic cells are cells that contain a nucleus.

So based off that information alone, you can answer #1. Cell A does not have a nucleus (big circle shape), while Cell B does. Therefore, Cell A is the prokaryotic cell.

As for #2, prokaryotic cells and eukaryotic cells DO have similarities despite their differences. For instance, they both have some of the same organelles, like the plasma membrane, ribosomes, cytoplasm, and DNA.

Finally for #3, two differences are that #1, prokaryotic cells have nucleoids while eukaryotic cells have a nucleus, and #2, prokaryotes have circular DNA while eukaryotes have linear DNA. 

Your best bet is finding a visual aid in a textbook or online to help you, so you can better identify organelles and eukaryotic/prokaryotic cells. Also, there are some cheesy videos out there on YouTube which I was forced to sit through in Bio class last year such as the Amoeba Sister's youtube channel which could help. Hope this helped!

https://www.youtube.com/watch?v=ruBAHiij4EA
https://www.youtube.com/watch?v=8IlzKri08kk


7 0
3 years ago
Genetic counselors can recommend genetic tests and intepret the results of these tests for individuals. In which instances can a
Luda [366]

Answer:

The answer is A, B, C and E.

Explanation:

Genetic counselors are responsible for recommending genetic testing according to the need of the patient and then guiding them through the process and helping with their decision after interpreting the genetic test results.

Out of the given options in the question, D does not apply to the given statement that if a genetic counselor recommends a genetic test or not because wanting to increase an unborn child's intelligence is unethical and is in the field of genetic engineering which is not approved.

The examples given in the options A, B, C and E are all examples of people that are seeking treatment for themselves either for curing a disease or preventing it and in those cases, the genetic counselor can recommend a genetic test.

I hope this answer helps.

8 0
3 years ago
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fiasKO [112]

Answer:

if someone were to commit a crime and there were 3 leads and one piece of evidence, the 3 people would have to be extracted of some dna and so would the piece of evidence, and the person that matches the dna on the evidence would be tied to the crime

8 0
2 years ago
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The economy has an impact on _____. a. which jobs are seasonal b. the reasons why workplaces are different c. employment and une
irakobra [83]
C. employment and unemployment 
because it is the only one that makes sense

7 0
2 years ago
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What will happen to a tide pool itself if star fish are removed from the ecosystem?
ICE Princess25 [194]

Answer:

the ecosystem will be disturbed... the animals feeding on it will be reduced due to lack of food and the animals on which the star fish was feeding will be increased which causes a total imbalance in ecosystem..

6 0
3 years ago
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