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2 years ago

The law of superposition states that in horizontal rock layers, the oldest layers are at the bottom. Which statements

Biology

1 answer:

Anastaziya [24]2 years ago

3 0

Answer:

It describes the order of rock layers.

It is a statement of fact.

Explanation:

Law is a statement that is found to be true and acquire from a number of experiments, while theory is gain from assumptions not through experimentation. Layers of soil never change their place with the passage of time. The oldest layer remains below at the end while the new layer is found on the surface of soil. It is a statement of fact because it is proved from experimentation. It never changes as the advancement of technology occurs.

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Write a sentence with the word troposphere

gavmur [86]

Answer:

A troposphere is the word that i dont know what it means

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2 years ago

Suppose you scraped off some of the pale

Reika [66]

By examining the tree bark and recording it’s properties. I would note if the cells move and duplicate, I would also note any living organisms which lay on the surface

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3 years ago

2. If 10% of the bases in a molecule of DNA are adenine, what is the ratio of adenine to guanine in the same

sertanlavr [38]

Answer: Option D) 1:4

Explanation:

Recall that the sum of all nitrogenous bases in the DNA nucleotide is equal to 100%. And specific base pairings of Adenine to Thymine (A=T), and Cytosine to Guanine (C=G) must be equal.

So, the percentage of Adenine equal thymine, and that of cytosine equals guanine.

Now, A + T + C + G = 100%

So, if adenine makes up 10% of the DNA nucleotides, then thymine is also 10%.

Then, 10% + 10% + C + G = 100%

20% + C + G = 100%

C + G = 100% - 20% = 80%

Thus, divide 80% by 2 to obtain the individual percentage of cytosine and guanine. Each will take 40%

Ratio Adenine to Guanine is 10% to 40%

or 1:4 in simplest form

7 0

3 years ago

Read 2 more answers

A maize plant with genotype Aa Bb produces the following gametes 100 Ab 45 AB 106 aB 50 ab This tells us that the two genes are

bogdanovich [222]

Answer:

True

Explanation:

The linkage relation of two genes can be determined on the basis of calculating recombination frequency.

If the recombination frequency value is greater than 50% then the genes are not linked and if the value is less than 50% then the genes are linked.

In the given question, the crossover gametes formed will be Ab = 100

and aB= 106.

Therefore,

$\dfrac{recombinant\ progenies}{ Total\ progeny}\times 100\\\\\dfrac{100 +106}{100+106+45+50}\times 100\\\\=\dfrac{206}{301}\times 100\\\\= 68.43\%$

Since the recombinant frequency value is larger than 50% therefore the genes do not show linkage.

Thus, True is the correct answer.

7 0

3 years ago

(03.02 MC)Human skeletal muscles can respire both aerobically and anaerobically. Which of the following best describes what happ

Ymorist [56]

Answer:

Under anaerobic condition pyruvate is converted into lactate.

Explanation:

Human muscles use both anaerobic and aerobic respiration for the production of ATP. During the starting of intense activity, the oxygen supply is not enough to provide instant energy to the muscle, therefore, muscles use anaerobic respiration to generate ATP.

During anaerobic respiration, muscle do not use oxygen to burn glucose. During anaerobic respiration in muscles, the glucose is converted into pyruvate and then this pyruvate gets convert into lactate and this process is called lactic acid fermentation. In this process, 2 ATP are produced.

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3 years ago