If a car accelerates even after moving at constant speed, it means that it moves in a circular path...
In Uniform Circular motion, a body moves with uniform or constant speed (magnitude remains same but direction changes which causes Acceleration)
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Your answer is it protects the heart and lungs
the correct asnwer is e
Natural lakes are formed by erosion. ALL BUT one of these is a type of erosion that forms lakes.
A) glaciers.
B) gravity.
C) rivers.
D) wind.
Gravity is not a type of erosion that forms lakes, whereas glacial erosion, river erosion, and wind erosion do contribute to the formation of natural lakes.
Natural lakes are formed by various types of erosion such as glacial erosion, river erosion, and erosion due to wind. However, out of the options provided, one is not a type of erosion that forms lakes. Glacial erosion forms lakes when a glacier scrapes out a large hole in the ground, which later fills with water as the glacier melts. River erosion also contributes to lake formation when watercourses dig out depressions that later become lakes due to sedimentation or changes in the course of the river. Wind erosion can lead to the creation of lakes by blowing away fine materials, leading to depressions that can fill with water. In contrast, gravity itself does not create lakes through erosion, but rather contributes to other processes such as landslides which might create a natural dam, thus gravity (B) is the correct answer to the question as it is not a direct erosional process that forms lakes.
In addition, lakes provide an excellent source of freshwater for human use, receiving water from surface runoff and groundwater discharge. They are often short-lived on a geological timescale, as they tend to fill with sediment. Artificial lakes or reservoirs are also created by humans for water storage and other uses by damming rivers.
Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid. What physical property of the material is Serena most likely observing?
Answer:
The correct answer is - solubility
Explanation:
Solubility is the nature of the material that is a chemical property of that specific solute ability to dissolved in a solvent. The ability of solute or material in a solvent or liquid is measured by the term of the maximum amount of that material dissolved in the liquid at equilibrium.
Sugar and water is a great example of solubility. When sugar is missed in the water it dissolved in water and disappear in the water here sugar is solute and water is solvent.
Thus, the correct answer is - solubility.
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that one is the top one. whats the first drop down
the answer is neurotransmitter which will tell the brain what part of the body to move..
Cacti in the Arizona desert compete to draw water through the roots because it does not rain much there. Younger plants with smaller roots have a tough time competing with the larger roots of the older plants. As a result, some of the younger cacti will die. What is the limiting factor?
A: Size of the roots
B: Soil
C: Sunlight
D: Water
The answer is; D
A limiting factor is a resource in the environment that significantly affects the growth, distribution or abundance of an organism or population within an ecosystem. When this factor is controlled it can result in increased or decreased growth.
In this water, the level of the water table in the desert limits the growth of the cacti plants.
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the answers are 1 3 4 and 5
why isnt there a solar eclipse and lunar eclipse each month?
What is at the bottom of the food chain?
plants are at the bottom of it
Food chains always start with plants
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do you just pick one of the squares?
In squash plants, the allele for yellow fruit (Y) is dominant to the allele for green fruit (y). A plant with genotype YY is crossed with a plant with genotype Yy.
What are the expected genotype percentages in the offspring of this cross?
Question options:
A)
100% heterozygous and 0% homozygous
B)
50% homozygous dominant and 50% heterozygous
C)
50% homozygous dominant and 50% homozygous recessive
D)
25% homozygous dominant, 50% heterozygous, and 25% homozygous recessive
the answer would be 50 dominant 50 recessive
The correct option is d. 25% homozygous dominant, 50% heterozygous, and 25% homozygous recessive
The expected genotype percentages in the offspring of the cross between a plant with genotype YY and a plant with genotype Yy are:
25% homozygous dominant (YY)50% heterozygous (Yy)25% homozygous recessive (yy)These percentages follow Mendel's principles of genetics where the genotype ratio of YY:Yy:yy is 1:2:1.
Which of the following happens when fossil fuels are burned?
Answer :Carbon dioxide and other pollutants are released into the air.
Explanation:
Burning fossil fuels results in a chemical reaction producing heat energy, CO2, and water vapor. It also releases byproducts like nitrogen oxides and sulfur dioxide, contributing to environmental issues like smog and acid rain. Furthermore, CO2 releases contribute to global warming.
Explanation:When fossil fuels are burned, they undergo a chemical reaction with oxygen in the air, resulting in the production of heat energy, carbon dioxide (CO2), and water vapor (H2O). This process is also accompanied by the release of other byproducts, such as nitrogen oxides and sulfur dioxide, which contribute to environmental issues like smog and acid rain. Moreover, the release of carbon dioxide, a greenhouse gas, contributes significantly to global warming.
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Please select the word from the list that best fits the definition ocean current that cools the West Coast of the United States
That's not right, the answer is the CALIFORNIA CURRENT. The question is about the WEST coast, not the East. Got 100% on the test.
Answer:
the answer is California Current
Which of these is true of the secondary immune response?
A) It produces memory lymphocytes.
B) It can make antibodies immediately.
C) It responds with naïve B- and T- cells.
D) Its lag phase may be longer than 7 days.
The answer is here,
Option B) It can make antibodies immediately.
Thank you.
Answer:
The correct answer is option B) It can make antibodies immediately.
Explanation:
The secondary immune response occurs when the same antigen is exposed to the person more than one time. The immune system immediately starts making antibodies to attack the antigen. By the second time, memory cells are established and start making antibodies immediately. The lag phase is shorter as compared to the primary immune response. Memory cells are cells responding cells for secondary immune response.
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the nucleus divides during Mitosis
the cytoplasm divides during cytokinesis
dna replicates in interphase
Allen and his lab partner each held a tuning fork, frequency 440 Hz, in their hands. Allen tapped his tuning fork with a mallet and they listened to the sound it made. "Wait a minute!" exclaimed Allen's partner. "My tuning fork is vibrating too!" Sure enough, both tuning forks were vibrating although only Allen hit his with the mallet. How can you explain this? A) Sound waves are transferred to the tuning fork. B) Sound particles caused the second tuning fork to vibrate. C) Sound energy travelled as waves from one tuning fork to the other. D) Sound energy travelled as particles from one tuning fork to the other.
Answer:D
Explanation: resonance
The natural frequency of the second tuning fork is the same as Carl's; the were both 440 Hz. When the waves from Anderson's tuning fork reached his partner's, the second tuning resonated; it started to vibrate as well.
The sound energy travelled as particles from one tuning fork to the other. The correct option is D.
What is resonance?An external force or a vibrating system causes another system to vibrate with greater amplitude at a specified frequency of operation.
When an item oscillates or vibrates in response to oscillations at a frequency that matches or is close to matching its resonant frequency, this is referred to as resonance.
Only when the first object oscillates at the resonant frequency of the second object does resonance occur.
The tuning fork is made up of a handle and two prongs (tines). The prongs of the tuning fork begin to vibrate when it is struck on a rubber pad.
These vibrations in the form of sound are transmitted as waves through the medium near it.
Thus, the correct option is D.
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what is the molecule in this image?
Answer:
Protein.
Explanation:
In the image above, we see a molecule that is made up of several amino acids. The molecule that is made up of amino acids is protein.
Proteins are the most abundant organic macromolecules in cells, fundamental to cell structure and function. They are found in all cell types and viruses.
They are formed by amino acids linked together and joined by peptide bonds, as shown in the image above.
Of extremely high molecular weight, proteins are composed of carbon, hydrogen, nitrogen and oxygen, practically all of them have sulfur. Elements such as iron, zinc and copper may also be present.
All proteins are made up of a set of 20 amino acids, arranged in varying specific sequences.
Sound is a form of _______. A. energy B. light C. radiation D. electromagnetism
A. Sound is a form of mechanical energy
Answer:
just energy
Explanation:
I had it on Study Island
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1. helicase
2. topoisermerase
3. rna primase
4. ligase
5. polymerase
RNA primase: synthesizes RNA primer at the initiation point.
helicase: unwinds the DNA molecule.
polymerase: synthesizes the complementary daughter strands.
topoisomerase: creates nicks ahead of the replication fork to relieve tension from unwinding.
ligase: joins the Okazaki fragments together.
RNA Primase: RNA primase is an enzyme responsible for synthesizing a short piece of RNA called an RNA primer. This primer serves as the starting point for DNA synthesis. It's essential because DNA polymerase (another enzyme) can only add new DNA nucleotides onto an existing strand of DNA. RNA primase creates this primer at the initiation point, providing a free 3'-OH group for DNA polymerase to attach to and begin the synthesis of a new DNA strand.
Helicase: Helicase is an enzyme that plays a crucial role in unwinding the DNA molecule during replication. DNA is a double-stranded helix, and helicase acts like a molecular zipper, breaking the hydrogen bonds between the complementary base pairs (A-T and G-C) and separating the two DNA strands. This unwinding is necessary for DNA replication to proceed.
Polymerase: DNA polymerase is an enzyme responsible for synthesizing the complementary daughter strands of DNA. It uses the existing DNA strands as templates and adds complementary nucleotides to each template strand, thus creating two new double-stranded DNA molecules. DNA polymerase also ensures that the new strands are accurate copies of the original DNA.
Topoisomerase: During the process of DNA unwinding and replication, the DNA molecule can become supercoiled and twisted. Topoisomerase is an enzyme that helps relieve this tension by creating nicks or breaks in the DNA ahead of the replication fork. This allows the DNA to unwind and prevents it from tangling or becoming overly twisted during replication.
Ligase: DNA ligase is an enzyme responsible for joining the Okazaki fragments together. Okazaki fragments are short segments of DNA that are synthesized on the lagging strand during DNA replication. DNA ligase functions to seal the gaps between these fragments, forming a continuous, unbroken strand of DNA on the lagging strand.
In summary, each of these enzymes plays a specific and crucial role in the DNA replication process, ensuring that DNA is accurately duplicated during cell division.
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which of the following accurately describes covalent bonds?
a)are formed when atoms transfer one or more protons
b)are formed when atoms share one or more protons
c)are formed when atoms transfer one or more electrons
d)are formed when atoms share one or more electrons
Answer: D)
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atom. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding
The correct answer is D. Are formed when atoms share one or more electrons
Explanation:
A covalent bond or molecular bond takes place as atoms share electrons, especially electron pairs that are electrons that are in the same orbital but have different spins. These types of bonds made the atoms involved electronic stable. A common example of this is water which is composed of two atoms of Hydrogen and one of Oxygen that formed covalent bonds. Additionally, different covalent bonds can be formed depending on the orbital of each atom. Considering this, the statement that accurately describes covalent bonds is covalent bonds are formed when atoms share one or more electrons.
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The two claims that refute the idea of spontaneous genesis are as follows: - Only previously existing matter may give rise to living cells.
- Cells develop from preexisting cell populations.
These are the right answers: (D) and (E).
These ideas contradict spontaneous creation since they are a component of the cell hypothesis, which holds that cells are the fundamental building block of all living things' structure and function and that all living things are made of them. Furthermore, this theory disproves the notion that living things can spontaneously form from nonliving stuff by asserting that all cells originate from preexisting cells.
Please select the word from the list that best fits the definition naturally occurring solid mixture of one or more minerals and organic matter
Rock
Explanation;Rock is a naturally occurring solid mixture of one or more minerals or organic matter.Rock is a solid mixture of crystals of one or more minerals, or organic matter.Rocks are classified by how they are formed, their composition, and texture. Rock has been an important natural resource as long as humans have existed.The rock cycle is the series of processes in which a rock type changes from one type to another.Answer: Rock
Explanation:
A rock is a solid body which consists of naturally occurring inorganic substances called as minerals. It also consists of organic matter that is being added by decaying plant and animal matter. Valuable inorganic minerals can be extracted from rocks.
Which scenario best illustrates how global issues are related? (The Smiths just had their fourth child, so they decided to move to a larger home. // The Joneses began recycling all plastic materials to cut down on the family’s waste. // Sally built a receptacle in her garden to collect rainwater to reuse to water her plants and cut down on her municipal water usage. // A community’s population continues to grow, so the city cuts down a large area of trees to build a new community center.)
a community starts to grow is the best answer because the cause and effect are directly related
I've been stuck on this for I little bit now and could use some help:)
The answer would be:
6,250 joules
Here's how to do it:
[tex]KE = \frac{1}{2}mv^{2}[/tex]
KE = kinetic energy (joules)
m = mass (kg)
v = velocity (m/s)
So with that formula let's figure out what was given to you.
500 kg and 5m/s
You know which is which based on the unit.
m = 500kg
v = 5m/s
Now all you need to do is plug it into your formula and solve.
[tex]KE=\frac{1}{2}mv^{2}[/tex]
[tex]KE= \frac{1}{2}(500kg)(5m/s)^{2}[/tex]
[tex]KE = \frac{1}{2}(500kg)(25m^{2/}s^{2})[/tex]
[tex]KE = \frac{1}{2}(12,500kg\cdot m^{2}/s^2})[/tex]
[tex]KE = 6,250kg\cdot m^{2}/s^{2}[/tex]
The unit [tex]kg\cdot m^{2}/s^{2}[/tex] also means joules
So the final answer is 6,250 joules.
Which describes the genetic code in a human?
A. Different genetic codes appear in each different type of cell.
B. Every human has the same exact genetic code.
C. Genetic codes change frequently in reaction to external factors.
D. A genetic code determines the physical traits of the body.
There are common elements for humans genetic codes, so, in a sense, they have exactly the same type of units defining it, yet the combination of thrm can determine, among others, the phisical characteristics of a person
Answer:
The right answer to this question is option D. A genetic code determines the physical traits of the body.
Explanation:
What is known about the genetic code is that we have 4 different kinds of nucleotides, thymine, adenine, guanine and cytosine. There are more of them, but let's rely on these four for this question. These 4 nucleotides are the same on every living being on earth, what really changes is how they're organized on the protein making process. These proteins are going to be made based on the genetic code.
After the explanation above, we can be sure that the genetic code determines physical traits of the body, and that's why every living being on earth have something in common, but at the same time, are not equal too.
The 1)_________ approach considers humans as part of the natural resource management system. This approach uses 2)_________ tools to manage resources.
1.) a.) adaptive b.) ecosystem-based c.) community-based
2.) a.) scientific b.)traditional c.) conventional
The correct answers are as follows:
1. The ECOSYSTEM-BASED approach considers humans as part of the natural resources management system.
There are many approaches, through which natural resources can be conserved and managed, one of these methods is ecosystem based approach.
Ecosystem based approach refers to a strategy that integrate the management of land, water and living resources. The method addresses many relationships across biological, spatial and organisational networks. This approach considers humans as an essential part of the natural resource management system.
2. This approach used SCIENTIFIC tools to manage resources.
The ecosystem based approach make use of appropriate scientific methodologies that are focused on level of biological organizations, which include processes, functions, structures and interaction of living organisms with their environments.
The ecosystem-based approach considers humans as part of the natural resource management system, using scientific tools for resource management.
Explanation:This perspective acknowledges that humans are as integral to ecosystem functioning as the other biological elements within it. It comes from the understanding that human actions invariably affect the ecosystem's health, hence necessitating their inclusion in any responsible management strategies.
The ecosystem-based approach extensively relies on 2) scientific tools to manage resources. These tools might include computer modeling, geographic information systems, and various bio-monitoring techniques. For example, scientific tools may be used to monitor pollution levels, estimate sustainable harvesting rates, or predict the potential impacts of climate change.
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Sound is a form of _______. A. energy B. light C. radiation D. electromagnetism
Energy
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Sound is a form of energy.
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The correct answers are:
The patient will have less hemoglobin in the blood.
Anemia is characterized by a deficiency of red blood cells or hemoglobin, leading to a reduced oxygen-carrying capacity in the blood.
The patient will have a reduced oxygen supply to the cells.
Since anemia results in a lower number of red blood cells, which are responsible for transporting oxygen, there is a decreased ability to deliver oxygen to the body's tissues and cells.
The incorrect statements are:
The patient will have less immunity against bacteria.
Anemia itself does not directly affect the immune system. However, severe and prolonged anemia can lead to fatigue and weakness, making the person more susceptible to infections indirectly.
The patient will have a thicker blood composition.
Anemia is associated with a reduction in red blood cells, which can lead to a decreased viscosity or thickness of the blood.
The patient will have increased platelets in the body.
Anemia is not typically associated with an increase in platelets. Platelet levels may be affected by other conditions, but anemia itself does not cause an increase in platelets.
Covalent bonds are chemical bonds between ions.
A. True
B. False
i think it would be
A. True.
Pollution in the _ Will have not he greatest effect on human health
A Troposphere
B stratosphere
C mesosphere
D thermosphere
The correct answer is - Troposphere.
The troposphere is the lowest part of the atmosphere. It is the densest part of it that borders with the lithosphere and the hydrosphere. The troposphere is the part of the atmosphere that supports all the life on Earth.
By polluting the troposphere, the effects on the human health will not be good at all, in fact it can be disastrous. The humans need air for the breathing, and the air that the humans breathe in is from the troposphere, so if the troposphere is polluted, than the humans will breathe in chemicals that are toxic and damaging for the human body. That will result in big problems with the health among the humans, especially health problems with the respiratory system, the heart, and cancer.
Answer:
A) Troposphere
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the answer is the last one
The phrase using a larger sample size indicates a limit to the scientific accuracy of the experiment.
The correct option is D.
Increasing the sample size in an experiment is often done to improve the statistical power and accuracy of the results. A larger sample size can provide more robust and reliable data, reducing the impact of random variations and errors.
However, even with a larger sample size, there may still be other factors that can affect the experiment's accuracy. While increasing the sample size can improve the precision of the findings, it does not guarantee absolute accuracy.
Other potential limitations to scientific accuracy could include issues related to the experimental design, measurement errors, biases, uncontrollable variables, and limitations in the equipment or methodology used in the experiment. Scientists are aware of these limitations and take measures to minimize them to the best of their abilities to ensure the validity and reliability of their research.
Hence , D is the correct option
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