if you measure the age of a fossil using 14c dating and determined its age to be about 17000 years old, how much of the rock should be made of 14N
Answer:
Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that. Carbon dating is used by archeologists to date trees, plants, and animal remains; as well as human artifacts made from wood and leather; because these items are generally younger than 50,000 years. Carbon is found in different forms in the environment – mainly in the stable form of carbon-12 and the unstable form of carbon-14. Over time, carbon-14 decays radioactively and turns into nitrogen. A living organism takes in both carbon-12 and carbon-14 from the environment in the same relative proportion that they existed naturally. Once the organism dies, it stops replenishing its carbon supply, and the total carbon-14 content in the organism slowly disappears. Scientists can determine how long ago an organism died by measuring how much carbon-14 is left relative to the carbon-12.
The percentage of 14C is close to 12%
Carbon-14 is a radioactive isotope chemical element characterized by containing 6 protons and 8 neutrons. Its main function is the dating of organic specimens because it is present in all organic materials.
This is because once an organism dies carbon-14 slowly decreases over year as the lifespam of carbon dioxide is between 5000 and 30000 years. The way it decreases is determined by a mathematical function, but to make it easier there are graphs like the one below that show the process.
According to the graph showing the amount of carbon in an organic material when a fossil is 17,000 years old, the percentage of Carbon - 14 is about 12%.
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How would a cloned animal compare with the original animal whose DNA
was copied?
A. The clone would have all of the traits of the original animal except
for the new genetically engineered traits.
B. The clone would have identical genetic traits but differ in the traits
the original acquired during its life.
c. The clone would be identical in all ways to the original animal and
have the same genetic and acquired traits.
D. The clone would be identical to the original in traits acquired
during its life but differ in its genetic traits.
Answer:
B
Explanation:
B is your answer because the clone would have identical genetic traits but differ in the traits the original acquired during its life.
Hope this helps:)
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Answer: its B i got a 100% on the quiz
Explanation: A.P.E.X.
Evolution is the process by which populations of organisms change over time. How could natural selection lead to evolution?
Answer:
happy Teddy day I love Teddy
Matt just woke up out of bed. He took his pulse for 10 seconds and got 10. What is his resting heart rate?
Answer:
60 beats per minute
Explanation:
heart rate is measured in minute, if he counted for 10 seconds, he would need to multiply that number by 6 to get his resting heart rate. 10×6=60
How deep must wells be drilled in order to collect water?
Answer: Sample response:
Wells must be drilled to reach the water table. That depth will depend on the area.
Explanation:
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Mary is a carrier for a mutated gene that causes sickle cell disease. Which of the following statements is true about Mary?
A. If Mary has a child with someone who has sickle cell disease, there is a 50% probability their child would have the disease.
B. If Mary has a child with someone who does not have a mutated sickle cell allele, there is a 25% probability that the child will be a carrier.
C. If Mary has a child with someone who is also a carrier, there is a 50% probability their child would have the disease.
D. Mary has sickle cell disease.
The statement is true about Mary is If Mary has a child with someone who has sickle cell disease, there is a 50% probability their child would have the disease. Thus, option A is correct.
What is Sickle cell anemia?
Sickle cell anemia is a hereditary disease which provides less oxygen to cells due to a change in the shape of red blood cells which fails to carry oxygen to cells.
In sickle cell anemia, the effected or mutated part is the beta gene that normally makes hemoglobin but due to the mutation in the amino acid, the protein formed is defected and fails to perform its normal function.
As mentioned above, it is a heredity diseases and pass from generations to generations.If Mary has a child with someone who does not have a mutated sickle cell allele, there is a 25% probability that the child will be a carrier.
Therefore, The statement is true about Mary is If Mary has a child with someone who has sickle cell disease, there is a 50% probability their child would have the disease. Thus, option A is correct.
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what is natural selection?
Answer: The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
dose bacteria have a nucleus
Answer:
yes
Explanation:
Answer:
they don't have
Explanation:
Bacteria are considered to be prokaryotes, which means they do not have a nucleus
Which animal doesn't belong to odd-toed ungulates? pls don't spam this is a lot of my points
Answer: Rhinoceros
Explanation:
Odd-toed ungulates include the horse, the tapir, and the rhinoceros.
what is a tetrad? snd why are they important feature of mitosis
Answer: a group or set of four
Explanation: tetrad occurs during the first phase of meiosis
Answer:
a group or set of four
Explanation:
please answer the question
its worth one mark so i need a short simple answer
Answer: There were less flies stuck to the model of the zebra with stripes.
Which is the best description
of transverse waves?
A. A transverse wave squeezes together,
B. A transverse wave moves up and down,
C. A transverse wave travels in a circle.
Answer:
B. A transverse wave moves up and down
Explanation:
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.
(GIVING BRAINLIEST!!)
Which of the following best describes how much precipitation and evaporation occurs over the ocean?
A) A small amount of the evaporation and precipitation
B) Most of the evaporation and precipitation
C) Most of the evaporation but a small amount of the precipitation
D) A small amount of the evaporation and most of the precipitation
Answer:
C. Evaporation occurs when the ocean water comes up to the clouds and change it from a liquid to a gas, however precipitation occurs just a tinsy bit because precipitation is actually like rain, hail, sleet, etc... so that doesn't happen all the time
Answer:
give the other guy brainliest
Explanation:
he got it right and you need two or more questions to mark someone as the brainliest so this is here for the person to be brainliest congrats to the user who answered it
Why does our body need to turn ADP into ATP?
Which is a type of igneous rock that forms at Earth's surface?
Lava
Clue: The victim was not electrocuted.
Extrusive
Clue: Dr. Earth was browsing books in the library
Intrusive
Clue: The victim did not stub a toe
Plutonic
Clue: Coach Physics was watching a movie in the theater.
Answer:
Extrusive Igneous rock
How many different elements are in O2?
Answer:
six
Explanation:
Professor of Chemistry, University of Minnesota, Minneapolis. Oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).
Answer:
6
Explanation:
Use the drop-down menus to answer the questions.
Which feature contains genetic material and is present in a eukaryotic cell but not in a prokaryotic cell?
Which two features are present in a plant cell but not in an animal cell?
Answer:
double membraned nucleus;i.cell wall and large permanent vacuoleExplanation:
nucleus of eukaryotic cell sarronded by double membrane in which its internal structure,bear genetic materials in chromosomes, in prokaryotic cell genetic materials exist independently in a circle DNA has nuclear material not surrounded by a double membrane.
Answer:
A
B and C
Explanation:
will mark brainliest
Make a claim about the relationship between the following terms: DNA, gene, protein, life functions. Be sure to use evidence and explain your reasoning. *
2 Central dogma of life. Notes: Genes are DNA sequences instruct cells to produce particular proteins, which in turn determine traits. Chromosomes are strings of genes. Mutations are changes in gene's DNA sequence.
This is a Astronomy Question:
Yep. There are 2 "coronas" in the sky. Corona means-
The rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse, when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon.
info was found on Dictionary
Hope this helps you out :3
The 56 chromosomes a baby sea turtle got from its parents contain all of its genes. Each of those genes is composed of a segment
of what biological polymer?
In 2015 what two space objects did New Horizons photograph?
Answer: I think collecting data on Pluto and Charon (the Charon flyby was at about 17,900 miles or 28,800 kilometers), New Horizons also observed Pluto's other satellites, Nix, Hydra, Kerberos and Styx.Also In July 2015, NASA's New Horizons became the first spacecraft to visit dwarf planet Pluto. The far-traveling spacecraft also flew by an object called 2014 MU69, or Ultima Thule, in January 2019. Observations from New Horizons are revolutionizing our understanding of solar system objects orbiting far from the sun.
Explanation:
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A scientist creates a cat that glows in the dark due to the insertion of genes from another organism. What type of biotechnology did they use?
cloning
genetic mutation
artificial selection
genetic engineering
Answer:
Artificial selection
Explanation:
Explain how thermohaline circulation is influenced by salinity and temperature.
Answer:
Thermohaline circulation is influenced by changes in density gradients. These density gradients are affected by the salinity and temperature of the ocean’s water. Cold water is denser than warm water and salt water is denser than freshwater. As water cools off, it sinks. As water evaporates, the salt concentration of the remaining water increases because the salt from the evaporated water remains. This causes the water to sink and circulate.
Explanation:
Changes in density gradients have an impact on thermohaline circulation. The salinity and temperature of the ocean's water have an impact on these density gradients.
What effect of thermohaline circulation?The distribution of heat to the polar regions is largely dependent on thermohaline circulation.
As a result, it impacts how quickly sea ice forms at the poles, which in turn affects other components of the climate system (such as the albedo, and thus solar heating, at high latitudes).
Both salt water and cold water are denser than warm or fresh water. Water sinks as it cools.
Because salt from the evaporated water persists, when water evaporates, the salt content of the remaining water rises. The water circulates and sinks as a result of this.
Therefore, thermohaline circulation is influenced by salinity and temperature.
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what is one abiotic factor that may contribute to the changes in populations of the honey bees?
an ice cube is set on a table at room temperature for 3 hours. what happens to the temperature of the ice cube and the table
Answer:
the ice goes to the rooms temperature so I will melt
Learning Task 1: True or False. Write TRUE if the statement is correct and FALSE if it is incorrect.
Write your answers on the space before the number.
1. Corals are living organisms.
2. Ecosystem can be destroyed by human activities.
3. Mangroves, coral reefs, and rainforest are examples of ecosystem.
4. Destroying the ecosystem can harm humans and other forms of organism.
5. If there is no mangroves forest, then the sea will have no meaning.
Answer:
truetruetruetruetrue/falseExplanation:
i wish this can help you.
How do the homologous chromosomes compare to each other ?
Answer:
The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
Explanation:
5. How many pairs of chromosomes are there in each
human *body cell?
Answer:
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.
Explanation:
Living things must maintain a fairly constant pH balance because the pH level determines
Which on?
Answer:
My guess would be the fourth option
Explanation:
All living thing have chemical reactions within their body, and ph can affect thous reactions.
Plz help Me i will really appreciate it
Answer:
An energy pyramid is a model that shows the flow of energy from one trophic level to the next along a food chain. The pyramid base contains producers—organisms that make their own food from inorganic substances. All other organisms in the pyramid are consumers
Explanation: