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jeka94
3 years ago
9

Which of the following is a method used to obtain the relative age of a rock or fossil?

Biology
1 answer:
Len [333]3 years ago
8 0

Answer:

B

Explanation:

Radiometric dating uses naturally occurring radioactive elements such as carbon-14 within the rock or fossil to estimate its approximate age. The half-life of the element must also be known. The amount of the radioactive trace element is compared to, in a ratio, with that of the number of the decay product elements. This approximate age can then be relatively compared to those of other rocks or fossils.

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A patient has severe acne that has been refractory to treatment. The patient is taking tetracycline and using topical tretinoin
Degger [83]

Answer:

The correct answer is option c. "Tetracycline must be discontinued before beginning the isotretinoin".

Explanation:

Isotretinoin is a medication used to treat cases of severe acne, having dramatic positive effects since the patients start the treatment. However, the use isotretinoin should be monitored by a doctor because it is hard to process and could cause renal side effects. In this case, the patient must discontinue its treatment with tetracycline before start using isotretinoin.

7 0
3 years ago
A new kind of tulip is produced that develops only purple or pink flowers. Assume that flower color is controlled by a single-ge
g100num [7]

Answer:

Explanation:

the purple allele (C) is dominant to the pink allele (c).

The frequency of C represents p while that of c represent q. Using the formula p+q= 1

The proportion of pink flower is 153/1000 = 0.153. This is also the frequency of the genotype cc (q^2).

Thud to find q which is the frequency of the c allele,

q = √0.153

q = 0.3912

From the formula p +q = 1 we can find p p = 1 - 0.3912

p which is the frequency of the C allele

p = 0.6088.

B. the proportion of all purple flowering plants that are heterozygotes and homozygotes is 847 / 1000 = 0.847

5 0
3 years ago
Which level on the energy pyramid has the third most energy?
Elenna [48]
The correct answer is D,
dose this help?
8 0
3 years ago
What's translation in biology?​
Vladimir [108]

Answer:

In biology, the process by which a cell makes proteins using the genetic information carried in messenger RNA (mRNA). The mRNA is made by copying DNA, and the information it carries tells the cell how to link amino acids together to form proteins.

(Don't forget to give brainliest if helpful)

find more here------> brainly.com/question/15948306

3 0
2 years ago
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Which best describes the sympathetic nervous system?
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I think it's fight or flight

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3 years ago
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