Which of the following can be used to measure absolute time? Select all that apply.
A. varves
B. tree rings
C. law of superposition
D. ratio of C-12 to C-14 in a bone sample
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Related Questions
The free-swimming organic and inorganic molecules in earth's early seas are called _____________________.
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Given what we know, we can confirm that the free-swimming organic and inorganic molecules in earth's early seas are called the primordial soup.
What was the primordial soup?The primordial soup was the contents of the seas of the early Earth. This was considered as a chemical solution. It consisted of terrestrial compounds as well as alien substances that arrived with comet and asteroid collisions.Therefore, we can confirm that the free-swimming organic and inorganic molecules in earth's early seas are often referred to by the scientific community as the primordial soup.
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6. Plants release water into the atmosphere through a process called
O infiltration
O precipitation
O transpiration
O evaporation
Answers
Plants release water into the atmosphere through a process called Transpiration...
You are designing a way to pull water from the ground. Which of the following
is a constraint?
A. You want to use the water for your garden.
B. You are not allowed to use metal pipes.
C. You own a swimming pool.
D. You have a sink in your house.
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Answer:
B
Explanation:
this is the only answer that would hinder your options in design
what body part is the metric system based upon
Answers
Answer:
thumb
Explanation:
Which of the following show the parts of a cell in order from smallest to
largest?
A:DNA-Chromosome-cell-nucleus
B: Chromosome-cell-ADN-nucleus
C:DNA-Chromosome-nucleus-cell
D: no answer text provided
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An urban area can reduce air pollution if more people give up using cars individually for buses or trains.
True
False
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Answer: It is TRUE! Hope this helped :)
Explanation: If more people took buses or trains, then there wouldn't be so much air pollution. For example if 5 people chose to take a bus or train to wherever they are going, that's 5 less cars causing air pollution! :)
An urban area can reduce air pollution if more people give up using cars individually for buses or trains is true.
What is air pollution?Pollution is defined as contamination of the environment through human activity that has a negative impact.
It can also be defined as the presence of any substance that endangers the health of people, animals, and plant life in air, water, soil, or food.
There are basically four types of pollution.
Air pollutionSoil pollutionWater pollutionNoise pollutionAir pollution is defined as any chemical, physical, or biological factor that alters the atmosphere's natural properties, whether it occurs indoors or outside.
It can also be defined as the tainting of air caused by compounds in the atmosphere that are dangerous to humans' and other living things' health, or that impair the climate or materials.
Thus, an urban area can reduce air pollution if more people give up using cars individually for buses or trains is true.
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What are the Reactants of photosynthesis ?
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Answer: Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
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Bigger beaks are dominant to smaller beaks. If a bird with a large beak (Bb) is blown to an island that requires smaller beaks, what is a possible genotype of its mate needed in order to produce an ospring with a smaller beak?
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bb maybe................
True or false: when using the otoscope to examine the ear of an adult, the nurse should gently pull the auricle up and forward to promote visualization of the tympanic membrane
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False
The statement "when using the otoscope to examine the ear of an adult, the nurse should gently pull the auricle up and forward to promote visualization of the tympanic membrane" is false.
What is otoscope?A medical instrument called an otoscope or auriscope is used to examine the ears. Otoscopes are used by doctors to examine ear complaints and check for sickness during routine checkups. A view of the ear canal and tympanic membrane or eardrum may be obtained with an otoscope.What conditions may an otoscope diagnose?ears hurt.blood or discharge coming from the ear.hearing issues.a feeling of ear fullnessDizziness.Hearing ringing.Foreign body insertion into the ear before.What does an otoscope reveal about an ear infection?The doctor will be able to see the eardrum's surface thanks to the otoscope. An uninjured eardrum appears pinkish-gray. Otitis media, or an infection of the middle ear, manifests as red, swollen ears with possible clear, yellow, or even greenish drainage.To learn more about otoscope visit:
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Amal was on a picnic to Hatta with his parents and family friends. While playing, he collected some muddy water from the Wadi in his beaker, which he wanted to make pure and clean. A) What do you think will happen to the mud in his beaker if left overnight? B) What is this process called?
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Answer:
See the answers below
Explanation:
A) The mud in Amal's beaker will settle down at the bottom of the muddy water if left overnight with clear water occupying the surface. This is because the particles of mud are insoluble in water and will settle down at the bottom of the muddy water if left undisturbed for a while.
B) The process is called sedimentation. The settled mud particles are referred to as the sediments and the clear water at the top can be decanted off to separate the sediment from the water.
Which explains the relationship between the respiratory system and the circulatory system in an organism?
A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
B. The respiratory system takes in oxygen. The circulatory system removes wastes from the body.
C. The respiratory system delivers oxygen to cells. The circulatory system controls the body's activities.
D. The respiratory system delivers oxygen to cells. The circulatory system provides support to cells.
Answers
A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
The respiratory system is defined as the set of tissues and organs involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide produced during aerobic respiration.
This gas exchange is also called breathing or external respiration. Thus the correct option is A that is the respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
In which system lungs and heart are present?Lungs are present in respiratory system and heart is present in circulatory system.
The circulatory system is refers to as which delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood through blood vessels which include arteries, veins and capillaries.
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Where do scientists find the key evidence linking the extinction of the dinosaurs to the impact of an asteroid or comet?.
Answers
Answer:
no hablo gringo
carnalito forgiveness xD
Shoots can easily fall over or be carried away by wind or water. What function of the root system prevents this from happening?
OA. Transpiration.
OB. Cell division
OC. Storage
OD. Anchorage
Answers
The anchoring function of the root system stops the shoots from toppling over or being swept away by the wind or water.
What role do root hairs play?The surface of exchange between the plant's root system and the soil is increased by their distinctive lateral elongation. The uptake of water and nutrients from the rhizosphere is the primary function of root hairs.
What tasks does the shoot system perform?The buds, fruits, flowers, and leaves that make up the shoot system. The shoot system supports the structure of the plant and the leaves, as well as serving to store nutrients and water for plants.
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name two species of staphylococcus that are part of our normal microbiota
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Answer:
Staphylococcus aureus, and coagulase-negative staphylococci
Explanation:
Two species of staphylococcus that are part of our normal microbiota are Staphylococcus aureus, and coagulase-negative staphylococci.
In species like sea turtles with high juvenile mortality, low adult mortality, and low fecundity, conservationists can most effectively help them by _____. View Available Hint(s)for Part A focusing on keeping adults alive focusing on keeping juveniles alive captive breeding programs controlling predator populations
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the mantle is where _______
a) gravity ceases
b) magnetic fields are created
c) there are many water bearing minerals
d) pressure is highest
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People from different races have what percent of their DNA the same? \( 80 \% \) \( 25 \% \) \( 40 \% \) \( 99 \% \)
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People from different races have around 99% of their DNA the same. This is because all human beings have the same basic biological processes and mechanisms, and all humans descended from a common ancestor.
A DNA sequence is a string of nucleotide bases that are arranged in a specific order. The DNA sequence of a gene specifies the order of amino acids in a protein.
Genes determine the characteristics of an organism, such as eye color, hair color, and height. The vast majority of human DNA is identical, and the differences in DNA between individuals are small.
The variation in DNA between individuals is due to single nucleotide polymorphisms (SNPs), which are changes in a single nucleotide in a DNA sequence.
SNPs occur naturally, and some SNPs are more common in certain populations than in others. This can lead to differences in physical characteristics and disease susceptibility between individuals of different ethnic or racial backgrounds.
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Photosynthesis !! And animal represent?
what does the left and side and right side mean ? The top and bottom in words of summary? And the evidence to support the meaning thanks:) !
Answers
Answer: Left side means that the plant autotrophs from the sunlight which means it get food. On the right side it means that the chloroplast in the plant cell is making photosynthesis. Down side means that the animal cellular respiration is that the animal cell is breaking down the food and making it into energy which sends it to the ATP which is the powerhouse of the cell.
Explanation:
What is the most common tree in the united states?.
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Answer: RED MAPLE
Explanation: These 10 species account for 45% of all volume. Red maple, in the North, is the most common tree found in U.S. forests followed closely by Loblolly pine, the most commonly planted tree, in the South.
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If an area gets an average of 125 mm of rain a year and has an average temperature of 20 degrees C, the biome is most likely
Answers
Answer:
wet
Explanation:
Suppose you were making a dichotomous key to identify the three types of leaves shown below Which of the following trails could you use to classify these leaves
into separate groups?
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Answer: It’s actually C
Explanation:
If glucose and lactose are both abundant, would it be beneficial for e. Coli cells to express the genes that metabolize lactose? why or why not?.
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No, if glucose and lactose are both abundant, it would not be beneficial for E. Coli cells express the genes that metabolize lactose because lactose is broken down into glucose.
Bacteria must first break down lactose into glucose and galactose before using glucose as an energy source. Since the first step uses energy, the overall energy gain is lower. On the other hand, if glucose is readily available, bacteria can consume it without having to expend any energy.
Therefore, the bacteria prefer to utilize glucose rather than lactose if it is directly available. Equal amounts of glucose and lactose will result in the bacteria using glucose first. They will switch to utilizing lactose once the glucose runs out.
Lactose is a disaccharide, a molecule composed of two simple sugars, a form of carbohydrate. Galactose and glucose are the two simple sugars that make up lactose.
The presence of lactose and the absence of glucose are two requirements for activating the lac operon. The repressor protein can be eliminated by lactose (through isolactose) in the environment. The catabolite activator protein, however, which is activated by 5'3' cyclic AMP, is then required.
Cyclic AMP alerts a highly diverse range of organisms to low glucose. In human cells, it serves as a low glucose signal. Additionally, it indicates famine in slime molds, which causes hundreds of individual amoebae to group together as slugs. Additionally, it triggers the CAP in bacteria, enabling the metabolism of carbohydrates other than glucose.
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How could an embryonic stem cell be used to repair a severed spine?
A. Embryonic stem cells secrete proteins that repair all other cell types, including nerve cells.
B. Embryonic stem cells can cause any other cell type to multiply.
C. Embryonic stem cells are primarily involved with neural growth and development.
D. Embryonic stem cells can grow into any other cell type, including a nerve cell.
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D. Embryonic stem cells can grow into any other cell type, including a nerve cell.
Any type of cell in the body can be developed from embryonic stem cells.
What is Stem Cells?
Stem cells are a special type of cells that have the unique ability to develop into different types of cells in the body, such as blood cells, brain cells, or muscle cells. They are characterized by their ability to self-renew and differentiate into specialized cell types. There are two main types of stem cells: embryonic stem cells, which are derived from the inner cell mass of early-stage embryos, and adult stem cells, which are found in various tissues and organs of the body, such as bone marrow or skin.
When introduced into a damaged area of the body, such as a severed spine, they can differentiate into the specific types of cells needed for repair. In the case of a severed spine, embryonic stem cells could differentiate into nerve cells that could help repair and restore function to the damaged spinal cord. While embryonic stem cell research is still in the early stages and faces ethical considerations, it holds great promise for the treatment of a wide range of conditions and injuries.
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Will selection eliminate a harmful recessive allele from a population as quickly as it will remove a harmful dominant allele? Why or why not?
Answers
Answer:
no
Explanation:
you can see dominant traits on every organism that can have them, meanwhile you can have carriers for recessive traits, so there can be hidden traits, thus it will take
Do you think we have a better chance of curing diseases, such as muscular dystrophy or cystic fibrosis, with our increased knowledge of genetic codes? What issues does this increased knowledge raise?
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Yes, our increased knowledge of genetic codes provides a better chance of curing diseases like muscular dystrophy and cystic fibrosis.
However, it also raises ethical concerns regarding genetic manipulation, privacy, and access to healthcare. Gene therapies and advancements like CRISPR have shown promise, but careful consideration of the potential consequences, such as unintended genetic changes and inequality in access to treatments, is essential. Balancing the benefits of genetic knowledge with ethical considerations is crucial to ensure responsible and equitable use of this information in disease treatment and prevention.
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A strain of Neisseria gonorrhea has a mutation which has caused it to lose the ability to produce fimbriae and become less virulent as a consequence. What function has this pathogen lost
Answers
Answer: The pathogen has lost the function of the ability to adhere to cells of the body.
Explanation:
Neisseria gonorrhea is a gram negative bacteria that has the ability to attack and cause disease in man using its virulent factors. It is know to attack the urethra of both male and female producing an acute urethritis and tenda to spread locally if not treated. The virulent factors determines the ability of the organism to infect or damage it's hosts tissues and they include:
--> endotoxins
--> pilli
--> fimbriae
--> capsule polysaccharide expression
The fimbriae is one of the virulent determinants which the organism uses to attach to the host cells. As these bacteria multiple and grow, there are chances of mutation occuring. MUTATION is defined as the errors during DNA replication or induced by exposure to mutagens (like chemicals and radiation)
If the bacteria is affected by mutation, which can cause the gene for fimbriae production not to be expressed, the virulent factor of the organism will be highly affected as the first step to cause an Infection which is attachment is lost.
Which is the end result of cytokinesis from a cell undergoing mitosis?
a. one cell that has two identical copies of DNA
b. one cell that has two different copies of DNA
c. two cells that have two identical copies of DNA
d. two cells that have two different copies of DNA
Answers
Answer: C two cells that have two identical copies of DNA
Explanation: Took the test!
What does a mass extinction look like in the fossil record?
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Answer:
There is less diversity in the fossil record
Explanation: when compared to older rock layers the fossil record will be less diverse
What are the lobes of the brain?
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The brain is an organ composed of a significant amount of nerve tissue that is shielded by the skull. It affects almost all of the major body systems.
Lobes of the brain:
The frontal lobe is in charge of planning, decision-making, memory, emotion, and movement.
The parietal lobe is responsible for controlling mathematical and spatial reasoning as well as sensations including touch, pressure, temperature, and pain.
The temporal lobe is involved in memory, language, and hearing.
The occipital lobe is in charge of vision and the interpretation of visual data.
The information about the body's internal state, such as hunger, thirst, and pain, is processed by the insula lobe.
What is the function of the brain?
Processing sensory data, controlling blood pressure and respiration, and releasing hormones are some of the brain's primary functions.
The greatest portion of the brain is called the cerebrum. It has two halves, known as hemispheres. The cerebellum is situated directly below the occipital lobes in the back of the brain. Fine motor abilities, or the coordination of smaller, or finer, motions, particularly those involving the hands and feet, are involved. For messages entering the brain, the thalamus functions as a form of relay station. Additionally, it affects alertness, pain perception, and attentiveness.
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Which macromolecule provides the most energy? How do you know
Answers
Answer:
There are four classes of biological molecules: fats, carbohydrates, proteins, and nucleic acids. Of these, fats produce the most energy per gram at a whopping nine calories per gram.
Explanation:
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Answer: Hello There!.................
fats
There are four classes of biological molecules: fats, carbohydrates, proteins, and nucleic acids. Of these, fats produce the most energy per gram at a whopping nine calories per gram. Carbohydrates and proteins produce less than half of this, at only four calories per gram.
Explanation:
Mark me brainest please. Hope this helps. Anna ♥