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Afina-wow [57]
2 years ago
12

1.

Biology
1 answer:
hammer [34]2 years ago
7 0

Through the application of radiometric dating techniques, the relative and absolute ages of rocks and fossil records offer proof of the earth's geographic past.

The geologists' dating techniques are typically based on radioactive dating.

To date the history of such events, credible sources of information such as the natural decay of the elements or compounds contained in the artifacts are used.

For instance, Red Rock Canyon is a region of geologic significance to all people.

The Red Rock Canyon National Conservation area is a beauty that took millions of years to create. Red Rock Canyon was discovered at the bottom of an ocean basin around 500 million years ago.

This ocean basin has accumulated limestone that is home to marine life fossils. The Aztec Sandstone has been found to contain the footprints of two-footed, meat-eating dinosaurs.

There were also uncovered the footprints of small creatures including spiders, scorpions, early mammals, and proto-mammals. Red Rock Canyon's fossils and rock formations provide proof of the planet's geologic past.

Learn more about Earth's geologic history here:

brainly.com/question/22364218

#SPJ9

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explain why it is important to keep the levels of nucleotides relatively balanced in the context of dna and rna synthesis
juin [17]

Answer:

Read Below

Explanation:

Nucleotides are A & T and G&C you see in DNA and in RNA T is Replaced by U. The reason they must be balanced between G&C and T&A is because G has to bond with A in DNA and G with C so if there is more G than C that means there is mismatches between the DNA nucleotides same thing for A and T. In RNA you follow the same rule. If we have lets say 27% of our DNA as A we have to have 27% as T leaving 23% as C and 23% as G. If there was lets say 29% T while one 27% A then there was a error in DNA replication and could lead to errors in RNA synthesis if not corrected

4 0
3 years ago
How much 3M NaOH (MW=40) can be made from 10.0mL of a 10M solution?
vaieri [72.5K]

Explanation:

The given data is as follows.

              M_{1} = 3 M,           V_{1} = ?

              M_{2} = 10 M,         V_{2} = 10.0 ml

Therefore, calculate the volume of given solution as follows.

              M_{1} \times V_{1} = M_{2} \times V_{2}

Now, putting the given values into the above formula as follows.

            M_{1} \times V_{1} = M_{2} \times V_{2}

            3 M \times V_{1} = 10 M \times 10.0 ml    

                   V_{1} = 33.3 ml

or,                             = 0.033 L        (as 1 ml = 0.001 L)

Since, molarity of NaOH is given as 3 M and its volume is calculated as 33.3 ml.

           Molarity = \frac{\text{mass of solute}}{\text{molar mass of solute}} \times \frac{1}{\text{volume in L}}

               3 M = \frac{mass}{40 g/mol \times 0.033 L}

              mass = 3.96 g

Therefore, we can conclude that mass of NaOH is 3.96 g.

8 0
3 years ago
What's an Environmental Impact Statement (EIS)?
statuscvo [17]

Answer:

The environmental impact statement (EIS) is a government document that outlines the impact of a proposed project on its surrounding environment.

Hope this helps.

3 0
3 years ago
A 5 week-old infant shows signs of fatigue after eating and has poor weight gain. he is suspected to have a congenital heart def
Rudiy27

93970, R60.0, I10, I50.9


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Keystone species play a key role in A. Niche specialization B. Mutualism. C. Community stability. D. Habitat destruction
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