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inn [45]
3 years ago
14

What type of rock is limestone? Describe how a limestone rock is likely to change over time​

Biology
1 answer:
alekssr [168]3 years ago
8 0
<h2>Part 1 Answer</h2>

<u>Limestone is a type of</u><u> sedimentary rock </u>

<h2>Explanation:</h2>

Limestone is a type of sedimentary rock which is composed mainly of skeletal parts of organisms living in water such as coral, forams and molluscs. The major materials of limestone are the minerals such as calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Limestone can turn into the metamorphic rock called marble if the right conditions occur.

<h2>Part 2 Answer:</h2>

<u>Over time limestone </u><u>can be deformed and crystallized</u>

<h2>Explanation:</h2>

Limestone and chalk are mostly made up of calcium carbonate. When acidic rainwater falls on limestone or chalk, these rocks may react with the rainwater, causing the rock to be weathered. With the passage of time if limestone has been squeezed and reshaped by temperature and pressure, its structure and composition changes to form a recrystallised limestone which is called  marble.

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Where could the instructions be held to create a protein?
FromTheMoon [43]

Answer:

The correct answer is - in DNA molecules.

Explanation:

The instructions or the information for the creation of the protein is held in the DNA molecule inside the nucleus in eukaryotic organisms while present in the cytoplasm in prokaryotes.

The DNA molecule has coded all the information for the particular protein by the two processes transcription and translation. Transcription is the first step which makes a copy of the DNA is complementary in the form of mRNA, The second step involves the decoding mRNA into an amino acid chain with the help of ribosomes.

6 0
3 years ago
An area where soil has eroded experiences what?
Natali [406]

An area where soil has eroded experience loss of nutrients. The topmost layer of soil is called the topsoil and is the most fertile. Soil erosion results in the loss of soil fertility and makes the land barren

The main cause of soil erosion is the removal of vegetation, which exposes the topsoil to water and wind. Wind and water are the main agents of soil erosion.

Water erosion can be sheet erosion, rill erosion, gully erosion or riparian erosion.

7 0
3 years ago
In humans, a type of blindness is due to a dominant allele; normal vision is the result of a recessive allele. Migraine headache
yan [13]

Answer:

Yes.

Probability of such child = 1/2 or 50%

Explanation:

According to the question, below are the genotypes and phenotypes possibilities:

aa = normal vision & no headache

Aa = normal vision & no headache

AA = blindness & headache

                                                                      Male                       Female

                                                                        Aa                            aa

Possible genotypes of progeny:            Aa        Aa           aa         aa

So it is clear that out of the 4 probable children, 2 with 'genotype aa' will have normal vision & no headache.

Mathematical expression is as under:

2/4 = 1/2 that means 50% progeny.

5 0
3 years ago
Which of the following was NOT a major animal on land during the Carboniferous period?
Karo-lina-s [1.5K]

Answer:

Amphibians

Explanation:

They had just shown up during the Carboniferous period and were still living in the water.

6 0
4 years ago
Read 2 more answers
Why is negative feedback often associated with maintaining homeostasis
Ostrovityanka [42]

Answer: Negative feedback serves to reduce an excessive response and to keep a variable within the normal range. Negative feedback loops control body temperature and the blood glucose level.

7 0
3 years ago
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