Hi there!
In the chemical formula H2O, the 2 stands for the number of hydrogen atoms. There are two hydrogen atoms and one oxygen atom in this formula. Therefore, the answer is B!
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Organisms that are responsible for talking in light energy to make their own food area know as which of the following ?
A boy exerts an average force of 65 n when he lifts a box 1.2 meters. How much work does he do?
Answer:
78 J
Explanation:
Work done = Force x distance
Work done = 65 x 1.2
Work done = 78 J
The work done by the boy is 78 J.
The given parameters;
force applied by the boy, F = 65 Ndistance traveled by the load, d = 1.2 mThe work done by the boy is the product of the applied force and the distance through the load is moved.
The work done by the boy is calculated as;
Work-done = Force x distance
Work-done =65 x 1.2
Work-done = 78 J.
Thus, the work done by the boy is 78 J.
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Where is RNA made? & Where does it go?
Answer:
RNA is created through the process of central dogma. The RNA is transcribed from the DNA and and transcribed from the nucleus of the cell and transported to the cytoplasm.
Explanation:
Final answer:
RNA is made in the nucleus through transcription of DNA and plays a crucial role in protein synthesis. Messenger RNA (mRNA) carries genetic information from the nucleus to the cytoplasm, where it guides protein assembly at the ribosome with the aid of ribosomal RNA (rRNA) and transfer RNA (tRNA).
Explanation:
RNA, or ribonucleic acid, is critical for translating the genetic code from DNA into proteins. Unlike DNA, which is double-stranded, RNA is single-stranded and contains uracil instead of thymine. This difference in structure allows RNA to perform its unique role in protein synthesis.
Where is the mRNA made?
mRNA is made in the nucleus of eukaryotic cells. During a process called transcription, an mRNA molecule is synthesized from a DNA template. This process transcribes the necessary genetic information encoded in the DNA into a form that can be read by the cell's protein synthesis machinery.
Where does the mRNA go after it is produced?
After the mRNA is produced in the nucleus, it is transported to the cytoplasm. Here, it travels to the ribosome to be translated into a protein. The ribosome, which contains both protein and ribosomal RNA (rRNA), reads the sequence of mRNA and directs the assembly of the protein with the help of transfer RNA (tRNA), which brings the correct amino acids to the ribosome.
What does nitrogen fixation accomplish?
O
A. It allows bacteria to use nitrogen to grow.
O
B. It allows respiration to occur.
O
C CU
C. It allows plants to use nitrogen to grow.
O
D. It allows industry to mass-produce nitrogen.
Answer:
D. it allows plants to use nitrogen to grow
It allows plants to use nitrogen to grow. Therefore, option (C) is correct.
Nitrogen fixation turns atmospheric nitrogen gas (N2) into a form plants can use. Nitrogen-fixing bacteria, either soil-dwelling or symbiotic with plants, do this function.
Nitrogen fixation converts atmospheric nitrogen into ammonium ([tex]NH^{4+}[/tex]) or nitrate ([tex]NO^{3-}[/tex]) ions, which plants need to flourish. Nitrogen is necessary for plant protein, nucleic acid, and other synthesis. Plants would suffer nutritional deficits without fixed nitrogen.
Nitrogen fixation helps microorganisms develop by providing useable nitrogen for the ecosystem. Nitrogen fixation supports the nitrogen cycle, soil fertility, and agriculture by lowering the demand for synthetic nitrogen fertilizers. Therefore, option (C) is correct.
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Which of the following is true about reproduction in flowering plants?
Answer:
C. asexual
Explanation:
flowers can not reproduce by sexual means because they can't move around
mark me brainliest please
Answer: Flowering plants reproduce by sexual reproduction
Which is a reflex response?
A) putting on a coat when you see that it is snowing outside
B) pulling your foot away after stepping on a sharp object
C) laughing at a funny joke told by one of your classmates
D) eating a snack when your stomach growls from hunger
Help heh:)
Answer:
Pulling your foot away agter stepping on a sharp object
Answer:
B) Pulling your foot away after stepping on a sharp object
Explanation:
Just need to match these I posted this question and accidentally put the subject as Spanish
Answer:
1. nonliving matter that living organisms need to survive
2. bacteria
3. plants
4. animals
Explanation:
Abiotic factors that characterize a forest ecosystem include? Which one
•light and biodiversity
•pH and the number heterotrophs
• temperature and amount of available water
•type of producers and decomposer
The most important abiotic factor of a forest ecosystem is temperature and the amount of available water as these directly affect the resources and climate. Thus option C is correct.
What are biotic and abiotic factors?The forest ecosystem is made up of two components that decide the characteristics of the forest. The tropical rainforest has a constant temperature and high amount of precipitation.
one is abiotic which is the non-living like air, temperature, and rain and the other is biotic factors which are the living parts like animals, and birds, plants, and decomposers.
Temperature and water control the habitat of animals and these are abiotic factors and have a direct effect on the ecosystem of forests. So option C is correct.
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How do human activities cause pathogens to move from one species to another? Give an example of cross-species transfer to help explain your answer?
The way in which humans are altering the envrionment is one of the main reasons why pathogens move from one species to another. The emergence of hemorrhagic fever in Argentina is an example of how human change to the environment has caused a cross-species transfer.
A triangle points down, 25 is below the triangle, 5 is to the right of the triangle, one dot and 26 is above the triangle. Next to the triangle is a solid circle with a single white line down the middle. Lines in the shape of an F extend from the top of the circle, slightly left of the white line. 1010 is to the right with negative 6 below it. Fill in the blank to complete each statement. The air pressure is millibars. The temperature is degrees. The dew point is degrees
Answer:
1010
26
25
Explanation:
Answer:
1,010
26
25
Explanation:
Taking the assignment rn
you people have a nice day alright?
Fossil fuel deposits and the Earth’s oceans are two places in which________.
carbon is stored
oxygen is produced
nitrogen is fixed
sulfur dioxide is generated
Answer:
Carbon is stored
Fossil fuel deposits and the Earth’s oceans are two places in which carbon is stored
Explanation:
This is because the organisms that lived millions of years ago in the sea died off and their remains were compressed at the bottom of the ocean from carbon, thus creating the fossil fuels that we have today. This process took thousands of years.
How could research on how genes control traits in orchids benefit our understanding of the human genome?
Answer:
All life is encoded through DNA. Every plant and animal has chromosomes in which genes that code for proteins are responsible for the organism's traits. For all species, the structure of core dogma is essentially the same, and studying the principle on orchids would also lead to the understanding of the human genome.
Research on how genes control traits in orchids benefit our understanding of the human genome as these give the idea of the genome. Traits are controlled by genes thus the various traits that are carried out by will be studied by the study of genes.
What is a gene ?It is the unit of inheritance which is carried out by the hereditary units that will be carried to the offspring from parents.
A study of genes will be helpful ion order to get the idea of the genome and the various characteristics are identified through the genetic studies and the various expressions are controlled by the genetic expressions.
The transmission of genes control the various traits from parents to child where the characteristics of the various traits carried by the children is passed on to child through the passing from parents.
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10. Which of the following is an emerging dis-
ease that was unknown 50 years ago?
a. malaria
b. dengue fever
C. Lyme disease
d. schistosomiasis
Answer:
The answer for your question is C.Lyme disease...
What did Charles Darwin attempt to answer?
A. How do animals reproduce in the wilderness?
B. Can traits be passed along in sexual reproduction?
C. What kind of molecule is used to store genetic information?
D. Why do different regions have different organisms?
Answer:
D
Explanation:
the answer is D because using Darwin's theory of evolution they can have different traits or different regions and they could have been their millions of years before the animals migrated and adapted to the region
D. Why do different regions have different organisms. Various organisms are varying in different environment based on their adaptations.
Charles Darwin is best known for what?Charles Darwin is best known for attempting to answer the question of why different regions have different organisms, which is also known as the theory of evolution by natural selection.
He observed that different species of organisms had unique adaptations that helped them survive in their respective environments. Darwin proposed that over time, these adaptations could lead to the development of new species as they evolved to better suit their environment.
His work challenged the prevailing belief of his time that species were fixed and unchanging, and his theory of evolution is now widely accepted as a fundamental principle of biology.
Charles Darwin attempted to answer the question of why different regions have different organisms, which led to his development of the theory of evolution by natural selection.
Therefore, he made various theories in order to produce various consequences in order to establish the phylogenetic traits and theories along with the establishment of the creatures.
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Ecologists have studied the Galapagos islands for a long time because of the diversity of the populations they possess. It is thought that small colonies of finches emerged on each of these small islands, each small population carrying only certain alleles of the parent population. Over time, the emerging populations varied greatly from one another, leading to the development of new species. Which mechanism of speciation best describes this scenario?
Options for the question have not been provided. They are as follows:
migration
founder effect
temporal isolation
behavioral isolation
Answer:
founder effect
Explanation:
In the given scenario a large population of finches got divided into many smaller populations. Each of these smaller populations inhabited a particular island and adapted according to the conditions of that island. Eventually, they evolved very differently from each other and formed new species. This is a classic case of founder effect where a small group of individuals breaks off from the bigger population and starts a new population in some other area. Since a limited number of individuals start the new population, some alleles can be absent in it which were found in the original population.
can mutations occur in both DNA and RNA nucleic acids ?
Answer:
Yes
Explanation:
All mutations will be passed onto new cells through DNA replication, and all RNA made from that DNA will also have the mutation. If the mutation occurs in sperm or egg cells, those mutations will also be passed on to the organism's offspring.
Yes, both DNA and RNA nucleic acids may experience mutations. Mutations are modifications to the nucleotide sequence in a DNA or RNA molecule. Errors in the replication process, environmental variables, or other outside forces may be at blame for these modifications.
Both the coding sequence and the non-coding portions of DNA are susceptible to mutation. The structure and function of the protein can be impacted by variations in the amino acid sequence caused by mutations in the protein's coding sequence.
Changes in the gene's expression may be caused by mutations in the non-coding areas. Both the coding sequence and the non-coding portions of RNA are susceptible to mutation. Changes in the amino acid sequence of the protein can result from mutations in the coding sequence.
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I neeed heeeelllpppp onnnn 5
Answer:
A. A parasite is an organism that lives on or in another organism and takes its food.
what TWO factors do scientists track and monitor in all types of freshwater ecosystem?
A: light availability
B:nutrients
C:water flow rate
D: Biodiversity
Answer:
A: light availability
B: nutrients
Explanation:
Both nutrients and light availability affect the primary productivity of the freshwater ecosystem, therefore, scientists study both factors to track associated changes. This is because photosynthesis is driven by sunlight and nutrients availability. It is suggested that the abundance of autotrophs (e.g. phytoplanktons) in an aquatic ecosystem increases as light and nutrients availability increase. Thus, there will be more food available for secondary and tertiary consumers to feed upon. Resultantly, the aquatic environment will turn a biodiversity hotspot where many species of living organisms start dwelling. Thus, scientists mainly ecologists would focus on these two parameters at first that lead to consideration of other parameters.
For more information, you may want to read this scholarly article
https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2006.51.1.0288
Which of the following environmental changes would increase the stability of an ecosystem?
A. A reduction of resources that increases completion.
B. An expansion of available land and increased biodiversity.
C. Introduction of a predator that preys on specific populations.
D. Climatic changes alter the length of a growing season of plants.
Answer:
Would be option B. An expansion of available land and increased biodiversity
(Sorry if it's incorrect)
Explanation:
A. would be wrong because it would de decrease this ability of an ecosystem, so that's wrong.
B. would be right because It will increase the amount of wilderness which would help the ecosystem.
C. would be wrong because it would decrease the amount of natural animals in the area.
D. would easily be wrong because it would It would affect the growing rate of the plants and could kill them, which would affect the animals, overall affecting the nearby ecosystem.
So, at least you with option B as being correct.
Answer:
B. An expansion of available land and increased biodiversity
Explanation:
Because if we expand the land for biodiversity that is plants and animals to thrive, than the stability of ecosystem will increase.
1 point
Fungi used to be classified in the same kingdom as plants. In time,
scientists observed a key characteristic that required reclassification. What
was that characteristic? *
Final answer:
Fungi were once classified as plants, but scientists observed a key characteristic that required reclassification. The cell walls of fungi are made of chitin instead of cellulose, and fungi absorb nutrients from other organisms.
Explanation:
Fungi were once classified as plants due to their similarities with plants such as immobility, having cell walls, and growing in soil. However, scientists observed a key characteristic that required reclassification: the cell walls of fungi are made of chitin instead of cellulose, which is found in plant cell walls. Additionally, fungi absorb nutrients from other organisms, while plants can make their own food through photosynthesis.Study island question!!
Answer:
b
Explanation:the offspring is the same as the parent
What does each branch in a cladogram represent?
A different ancestral trait
O
B. A different derived trait
c. A different common ancestor
D. A different outgroup
AnswerB. I think,Plus is it helpful?
Explanation:
The branch of the cladogram represents different out-groups. Therefore, option "D" is correct.
What is a cladogram?A cladogram represents the phylogenetic relationship between organisms that share the same ancestors. The parts of a cladogram a root, nodes, clades, taxon/ out groups, and branches.
Roots in the cladogram represent the main ancestor of all the organisms. It is the initial organism from which other organisms were evaluated. Nodes represent the first organism that evolved from the ancestor. It is the starting point of divergence. Clade represents a group of evolved organisms whereas the taxon represents distantly related organisms.
A cladogram helps in the identification of the ancestors from which a particular group of organisms is outgrown.
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4. Which describes all of the organisms shown
in the food web? SC.6.L.14.2
A unicellular
B multicellular
C producer
D consumer
NEED ANSWERS ASAP!!
All organisms in a food web can be described as consumers, as this term encompasses all levels from primary to quaternary consumers, unlike producers which only refer to the base of the food web.
Explanation:The original question asks to describe all of the organisms shown in a food web. To answer this question accurately, we must consider the characteristics shared by each organism within the web, spanning from producers to quaternary consumers.
The correct answer is D. consumer, as this term includes all organisms that rely on consuming other organisms for energy, encompassing primary, secondary, tertiary, and quaternary consumers. Producers, which are typically photosynthetic organisms like plants or phytoplankton, form the basis of food webs by producing organic compounds from inorganic sources.
However, the question asks for a description that applies to all organisms within the web, making consumers the correct choice since they make up the majority of any food web, relying on other organisms for energy and nutrients.
Which two oxides are emitted into the air when power plants produce electricity?
a. sulfur oxide and nitrogen oxide
b. sulfur oxide and nitrogen dioxide
c. sulfur dioxide and nitrogen dioxide
d. sulfur dioxide and nitrogen oxide
Answer:
sulfur oxide and nitrogen oxide
Explanation:
these are released from power plants along with carbon dioxide
Final answer:
Sulfur dioxide (SO2) and nitrogen oxide (NO) are the two oxides emitted into the air when power plants produce electricity. Their combustion contributes to air pollution and can have adverse effects on human health and the environment.
Explanation:
The two oxides that are emitted into the air when power plants produce electricity are sulfur dioxide (SO2) and nitrogen oxide (NO). Sulfur dioxide is produced from the combustion of fossil fuels, especially those containing sulfur compounds, while nitrogen oxide is produced from the combustion of fuels in vehicles and power plants. These emissions contribute to air pollution and can have adverse effects on human health and the environment.
Which element is a semiconductor?
germanium
aluminum
tin
iodine
Answer:
A. Germanium
Explanation:
Germanium is the only semi-conductor out of the four because aluminum and tin are conductors and iodine is an insulator.
The element that is a semiconductor is germanium. The correct option is A.
What are semiconductors?Semiconductors are substances with specialized electrical properties and can be used as the basis for computers and other electronic devices. Typically, it is a solid chemical element or compound that, in some circumstances, transmits electricity but not in others.
Germanium is an element of the periodic table that is grayish black, and it is hard and brittle. It is a semiconductor because it contains four electrons in the valence shell.
Examples of most commonly used semiconductors are Gallium arsenide, germanium, and silicon. Tin, iodine, and aluminum are not semiconductors. They are metals and nonmetals.
Thus, the correct option is A. germanium.
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PLEASE HELP 58 POINTS I WILL THANK & GIVE BRAINLIEST TO QUICKEST ANSWER!!!!!!!!
In your own words, write a paragraph that explains how evidence of evolution since Darwin’s time has strengthened his theories. Please include the following:
Use our previous discussions, power points, khan academy and learning.
Describe how natural selection supports or refutes Darwin’s theory of evolution.
Describe how the fossil record supports or refutes Darwin’s theory of evolution.
Describe how embryology supports or refutes Darwin’s theory of evolution.
Describe how analogous and homologous structures support or refute Darwin’s theory of evolution.
You may also use reputable research.
Please cite your findings. Please include your links at the bottom of the assignment.
Answer:
In biology it refers to observed changes in organisms, to their descent from a common ancestor, and at a technical level to a change in gene frequency over time; it can also refer to explanatory theories (such as Charles Darwin's theory of natural selection) which explain the mechanisms of evolution. Natural selection
There are two major components to the theory. The first is the mechanism of natural selection, which was proposed independently by Charles Darwin and Alfred Russell Wallace in 1858.
In the same way artificial selection occurs when breeders choose seeds or studs that will improve their stock in the next generation, natural selection is the process of sorting living things according to how well adapted they are to their environment.
In the case of artificial selection, humans choose which traits are desirable. In the case of natural selection, traits that increase the likelihood of survival and reproduction will become more common within a population or species over time.
In the past, natural selection has been misrepresented by calling it the survival of the fittest. This statement oversimplifies the mechanism by making it sound like a tautology: the survival of those who survive.
The truth is that individuals never survive. What survives is the process for making another individual, and this resides in genes found in populations.
Natural selection has more to do with differential reproduction than survival, and what it selects are the genes that code for desirable traits or characteristics. The interaction of individuals with their environment provides a mechanism for sorting out which traits (not which individuals) will be passed on to the next generation.
Nature of inheritance
The second major component to the theory is the nature of inheritance, which follows the insights made by Gregor Mendel in 1865 and has advanced considerably since then due to our understanding of genes, DNA and the molecular processes of life.
When natural selection was first formulated by Darwin, the nature of inheritance was not understood. Our current understanding of inheritance is very sophisticated and includes the precise mechanisms for passing genes on to the next generation, how genes are modified by mutation and how they are shared among sexual species.
If we know enough about a gene and its various forms, it is possible to accurately predict the change in the frequency of those genes over time using mathematical formulae from population and evolutionary genetics theory.
This alteration of gene frequencies is subtle and does not, at first glance, seem worthy of being called evolution. But it is precisely these small changes at the genetic level that lead to large changes in the organisms that carry them.
The sorting of genes affects the fate of populations: populations drift apart and become species, and species diverge to create whole groups of plants or animals that dominate the landscape for millions of years.
The intricate details of cellular processes are responsible for the glorious and majestic diversity of life on our planet.
The theory of evolution includes large changes over vast periods of time and tiny changes made when one cell divides into two.
These processes form a continuum that is the history of life on Earth
Answer:
If we know enough about a gene and its various forms, it is possible to accurately predict the change in the frequency of those genes over time using mathematical formulae from population and evolutionary genetics theory.
This alteration of gene frequencies is subtle and does not, at first glance, seem worthy of being called evolution. But it is precisely these small changes at the genetic level that lead to large changes in the organisms that carry them.
The sorting of genes affects the fate of populations: populations drift apart and become species, and species diverge to create whole groups of plants or animals that dominate the landscape for millions of years.
How have atmospheric carbon levels changed?
Answer:
Climate Change: Atmospheric Carbon Dioxide. The global average atmospheric carbon dioxide in 2018 was 407.4 parts per million (ppm for short), with a range of uncertainty of plus or minus 0.1 ppm. ... Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.
Over the past few centuries, atmospheric carbon levels have significantly increased due to human activities, primarily the burning of fossil fuels and deforestation. The burning of fossil fuels, such as coal, oil, and natural gas, releases carbon dioxide (CO2) into the atmosphere.
Additionally, deforestation reduces the number of trees available to absorb CO2 through photosynthesis, further contributing to increased atmospheric carbon levels. Historically, atmospheric carbon dioxide levels have varied naturally over long periods due to geological and biological processes. However, the industrial revolution and the subsequent reliance on fossil fuels have led to a rapid increase in carbon dioxide concentrations.
To provide some context, pre-industrial atmospheric CO2 levels were around 280 parts per million (ppm). As of 2021, atmospheric CO2 levels have surpassed 410 ppm, which is higher than at any point in at least the last 800,000 years. This increase has occurred at an unprecedented rate in Earth's history.
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Earth’s path around the sun is ____________. Which word best completes the sentence? triangular elliptical random circular
Answer:
i think the answer would be circular.
Explanation:
because it moves around the sun in a circle.
Answer:
elliptical
Explanation:
According to natural selection, what environmental factor caused the beaks of the
finches to be different on each island? (Weather, Predators, Food Source, or Disease)
Answer: I think the right answer would be food source because in a island food source aren't the same with them in another land
Explanation:
_____ pressure is associated with rising air, clouds, and possible precipitation.