Answer:
The correct answer is option A. He could collect a large amount of data for a low cost.
Explanation:
A descriptive investigation is a method of the research or investigation where it describes only. The descriptive investigation should carry out the accurate, factual phenomena in a systematic way without influence any causal relationship.
the descriptive investigation does not tell about the reason and method of the phenomena that took place. All three options except option A are false statements in terms of descriptive investigative.
Thus, the correct answer is option A. He could collect a large amount of data for a low cost.
They have limited evidence about the long term consequences, health risks and side effects
There is still limited study on the effects of having low carbohydrates diet. Evidence are not enough to guarantee the safety and efficacy of this type of diet specially in losing weight. The effect of having low carbohydrates in the diet can lead to decrease output of the thyroid, increased input on cortisol, impaired mood and cognitive function, muscle catabolism, suppressed immune function.
I believe the answer is D
It represents the split chromosome is true about the chromatids.
<h3>What are the chromatid's characteristics?</h3>
One of a chromosome's two identical halves that has undergone replication in order to facilitate cell division is referred to as a chromatid. The centromere, a constrictive area of the chromosome, serves as the connection between the two "sister" chromatids.
<h3>What is a chromatid's purpose?</h3>
It permits cells to store two copies of their info in order to get ready for cell division. This is crucial to ensuring that daughter cells are strong and completely functional, carrying the entire complement of DNA from the parent cells.
To know more about chromatid's visit:-
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<h2>Calculate the Rf values</h2>
Explanation:
- In the event that an alternate dissolvable were utilized, the Rf worth would not be the equivalent on the grounds that, contingent upon the dissolvable, there is a distinction in dissolvability. On the off chance that an alternate dissolvable was utilized, the general places of the groups would be different.
- The Rf estimation of the xanthophyll is 66% that of carotene since xanthophyll has a H bond with cellulose, which backs it off, and makes it less dissolvable in the dissolvable.
- Carotene is progressively dissolvable in 9:1 oil ether CH3)2CO arrangement, which made it be conveyed higher and have a bigger Rf value.
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Measure the separation the dissolvable voyaged, which is Df, and measure the separation the test arrangement voyaged, which is Ds.
- Ascertain the maintenance factor utilizing this condition <em>RF = Ds/Df. </em>
- Basically isolate the separation the arrangement went by the separation the solvent traveled.
