What is the age of Egyptian papyrus with 63% of its original carbon- 14 atoms?
C-14 half-life which is 5740 years as reference.
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Answer:
Egyptian papyrus: 3811.10 years
What is papyrus?
It is a material made in ancient Egypt from the pithy stem of a water plant, used in sheets the papyrus plant, a reed which grows in the marshy areas around the Nile river. Papyrus was used as a writing material
Do we still use papyrus?
Yes we do! Papyrus still exists in Egypt today but it has greatly reduced number.
Competition is a driving force behind natural selection. Which of these statements best
describes why competition is a constant pressure?
Answer:
The options are not given, here are the options gotten from another website.
A. Organisms produce more offspring than can survive
B. Organisms are taught to fight others of the same species
C. Organisms are taught to fight others of the same species
D. Multiple species fill the same niche and competition will always arise against other species
The correct option is D.
Multiple species fill the same niche and competition will always arise against other species.
Explanation:
This is because competition arises when different organisms living a niche compete for space or resources and this can be as a result of too much population in a niche and limited resources and space. Organisms tend to compete for survival which is the driving force of natural selection.
These u because as competition rises, species tend to develop traits which will help them to survive, adapt , reproduce and compete well in their environment an this result in survival of the fittest....that is those that can adapt well.
What order of reptiles do snakes belong to?
Answer: Scaled reptiles
Explanation:
Answer:
They belong to "Scaled reptiles" hope this helps!
The answer please answer will give brainliest
Answer:
Atmosphere
Explanation:
can i get the brainliest
The New Orleans Musicians' Clinic did not make any recommendations about low or high pitch sounds. Why are high pitch sounds less damaging to ears than louder sounds? Use your model and what you have learned about sound waves and energy to write an explanation. Some helpful words to include in your response are: transfer, energy, eardrum, and air particles.
Answer:
Due to high energy.
Explanation:
High pitch sounds less damaging to ears than louder sounds because louder sounds contains more energy than high pitch sound. When this high energy of loud sound transfer from air particles towards our eardrum, it can greatly damaged the ear while on the other hand, high pitch sound has low energy so it causes less damaged to the eardrum.
i need help plz !!!!
Answer:
Black
Orange
Black and white, orange and white.
Explanation:
All of these options are possible for colors in males except black, orange, and white. This phenotype requires 2X chromosomes, one with the black allele and one with the orange allele.
Explain how photosynthesis provides energy for consumers.
Answer:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration.
What would happen if we did not add leap years
Select ALL that apply.
The Food and Drug Administration regulates:
A) immunizations
B) drug labeling
C) radiation levels
D) cancer research
E) food sanitation
Answer:
well drugs willl kill you
Explanation: cancer research
What are the chances of the F1 spring being Red
Stanimar is staying in the hospital after surgery. He starts to suffer from a fever, diarrhea, and abdominal pain. How did Stanimar most likely contract his nosocomial infection?
A urinary catheter was not properly sterilized before it was used.
O A nurse did not properly disinfect her hands before she inserted the ventilator during surgery.
O A health-care worker did not disinfect her hands after she helped another patient to the bathroom.
O The surgical instruments that were used during his surgery were not properly cleaned before his procedure.
Answer: I believe the answer to be a.
Explanation: The symptoms listed are cause of a urinary tract infection, so the most likely answer would have to do with the one having to do with the urinary tract and can often cause a very hideous infection.
Stanimar most likely contract his nosocomial infection through the fact that involves the mechanism of a urinary catheter was not properly sterilized before it was used. Thus, the correct option is A.
What is Nosocomial infection?Nosocomial infection may be defined as a form of healthcare-associated infection that is acquired during the process of receiving health care that was not present during the time of admission.
Some common types of Nosocomial infection include urinary tract infections, respiratory pneumonia, surgical site wound infections, bacteremia, and gastrointestinal and skin infections.
The nosocomial infection generally spread through the pathogens like Staphylococcus aureus, Pseudomonas aeruginosa, and E. coli.
As Stnimar is suffering from a fever, diarrhea, and abdominal pain, he definitely has a urinary tract infection. It may arise due to the contamination of a urinary catheter that was not properly sterilized before it was used.
Therefore, the correct option for this question is A.
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The image below depicts the larval stages of various mosquitoes. The three have very similar structures. What does this suggest about these organisms ?
Answer: You picked the correct answer, "They all inherited their traits from a common ancestor."
Explanation: Well, one I had a test on this question too and I got it right. Second, if all species shown have something in common (structures) than they most likely got it from a common ancestor.
They all inherit their traits from a common ancestor. So, the correct option is C.
What is an Ancestor?An ancestor is a parent or the parent of an antecedent, commonly referred to as a forefather, fore-elder, or forebear. Each individual from whom one is born is an ancestor. The individual who has received an estate, according to law.
Anybody we are descended from is an ancestor. To descend in a family implies to "come from." The parents, who in turn descended through their parents, who in turn descended from the parents, and so forth. The ancestors are the line of parents and kids.
Your ancestors are your mother, father, and grandparents. If matrilineal descent is practiced in the culture or civilization, your mother and grandmother are the ancestors but not your dad or grandfather. They all derive their characteristics from an in this instance.
Therefore, the correct option is C.
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adenine+ribose sugar+3phosphates=
Anaerobic bacteria releases methane, hydrogen oxides, and oxygen.
True or false ?
2. Students survey the area in and around a small
pond and find the following: algae, rocks,
tadpoles, snails, mud, water. Which items
represent biotic factors? Select all that apply.
algae
® rocks
© tadpoles
O snails
E mud
f water
Answer:
Algae, tadpoles, snails
Explanation:
Which of the following statements about phenotypes and genotypes is false?
A. Phenotype can be changed by the environment.
B. Genotype affects phenotype by providing the instructions for making proteins.
C. Phenotype is an organism's visible characteristics.
D. An organism's phenotype is only made up of genes and alleles.
Answer:
D. An organism's phenotype is only made up of genes and alleles.
An organism's phenotype is only made up of genes and alleles is the false statement about genotype and phenotype.Therefore, the correct option is D.
What is a genotype and phenotype?Genotype refers to the genetic makeup of an organism, including all of its inherited genes and variations. Phenotype refers to the physical characteristics and traits of an organism that result from both its genetic makeup (genotype) and environmental factors.
The given statement is false because an organism's phenotype is not only determined by its genes and alleles, but also by environmental factors such as diet, exposure to sunlight, and other external factors.Therefore, the correct option is D.
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What's the difference between the animal cell and the plant cell?
Answer: The animal cell doesn’t have a cell wall
Explanation: Visit bbc bite size
Answer: A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
how can you walk under water?
Answer:
by taking oxygen heavy bottle for respiration and to touch a ground.
3. What is the process by which a mature egg is released by the ovaries?
A. menstruation
B. ovulation
C. maturation
D. Fertilization
I’ll give brainiest
Answer:
the processol of mature egg released by the fertilization
What three traits are used to classify organisms?
A
Cell type, how they create energy, number of cells they have
B
Cell type, if they're living or dead, the number of organs they have
с
How they create energy, how many years they live, how big they are
D
The number of cells they have, the number of years they live, the number of
offspring they produce
Answer:
I think it’s D
Explanation:
Which of the following explains why antibiotics can treat flu-like symptoms caused by bacteria but are ineffective against flu? : A Flu is a response to an antigen. B Antibiotics require time to work. C Antibiotics strengthen antibodies. D Flu is caused by a virus.
Answer:
D Flu is caused by a virus.
Explanation:
Antibiotics are designed for bacteria, not viruses.
The statement which explains why antibiotics can treat flu-like symptoms caused by bacteria but are ineffective against the flu is that the flu is caused by a virus. Thus, the correct option for this question is D.
What do you mean by Antibiotics?Antibiotics may be defined as a type of drug that is significantly utilized in order to treat infections that are typically caused by bacteria and other microorganisms. It is a type of antimicrobial substance that becomes active against bacteria.
Antibiotics are the most important type of antibacterial agent for fighting bacterial infections. It can effectively treat flu-like symptoms caused by bacteria but are ineffective against the flu because the disease of the flu is generally caused or provoked by the presence of the Influenza virus.
Therefore, the statement which explains why antibiotics can treat flu-like symptoms caused by bacteria but are ineffective against the flu is that the flu is caused by a virus. Thus, the correct option for this question is D.
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How easy was it to sort finches by song?
I need help pls answer quick
Answer:
The answer is B. HHCc.
Explanation:
This is because there is no dominant gene so there cant be a gene for hair. The only time there is a (dominant) gene in the offspring is if at least one parent has a (dominant) gene.
-Hope this helps
Which of the following environmental factors would positively influence the survival and reproduction of only light peppered moths?
A.
A forest fire that burns down the trees.
B.
Laws that improve air quality and restrict pollution.
C.
Increasing the number of factories that burn coal into the air.
D.
A disease that infects the light peppered moths and not the dark.
Answer:
The correct answer is - option B. laws that improve air quality and restrict pollution.
Explanation:
The dark peppered moths were the adaption of the light peppered moths due to the change in the environmental condition of increased pollution that made tree bark dark in color and allows birds to easily prey on the light peppered moths.
This leads to natural selection and light moths become dark but the after Clean Air Act was that there was less pollution then there is less soot in the air, so trees were less black which result in the Light-colored moths would increase, and dark-colored moths would decrease.
Which is a carbohydrate monomer
O glucose
O sucrose
O glucagon
O glycogen
Answer:
sucrose
\
Explanation:
Can someone please give me some main ideas for a scientific story? It has to be at least 500 words and I'm not sure what to write about. Please help
Explanation:
try ancient sciences from Greece and how it compares to modern science
Cartoon and movie characters such as Wolverine, Mystique and Storm lead to the notion that genetic
mutations always cause profound changes in the phenotype of an organism. However, the lesson
over DNA and Genetics clearly shows that mutations may or may not have an effect. Which of the
following mutations would most likely NOT cause an effect in an organism? (A Codon chart has been
provided below to assist you)
Answer: A
Explanation:
A frameshift mutation is brought on by a single base insertion close to the beginning of the coding sequence.
What is Mutation?Codons are used to express genes in triplets, the insertion will alter the reading frame and provide a translation that is entirely different from the original. Consequently, this will have the greatest detrimental effect.
A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.
Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
Therefore, A frameshift mutation is brought on by a single base insertion close to the beginning of the coding sequence.
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During science class, Mauricio made sketches of the major organelles of the cell. Which of the following is his sketch of a mitochondrion?
Answer: B
Explanation: I did The test
During science class, Mauricio made sketches of the major organelles of the cell. The second sketch describes a mitochondrion. The correct option is B.
What are mitochondria?The “powerhouses” of the cell, mitochondria, break down fuel molecules and harvest energy during cellular respiration. Chloroplasts and mitochondria probably started as microorganisms that were swallowed by larger cells (the endosymbiont theory).
A mitochondrion is a membrane-containing cell organelle. It is the site of energy-producing metabolic processes and cellular respiration. The process happens inside mitochondria.
Thus, the link between cellular respiration and photosynthesis is that the reactant in photosynthesis is a byproduct of cellular respiration.
Therefore, the correct option is diagram B.
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I want to test the people of brainly so here is my question.
What do trees eat
Answer:
Vitamin D, nutrients from dirt, and Carbon dioxide right?
Explanation:
They're living on sunshine woah!
I guess dirt be tasty.
And they create oxygen by taking in carbon dioxide.
Why water is a wonder liquid? Justify ( A major resource to determine life on the earth.)
please please guys give me answer of this Question
Answer:
Following are the reasons:Water is a major solvent in nature.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Environment temperature, rainfall etc are maintained by water.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Environment temperature, rainfall etc are maintained by water.There are much more other properties which make water as a wonderful liquid.