Answer:
B
Explanation:
she would have to continue to peddle the bike in order to continue up or else she would have lost kinetic energy
Answer: D) Friction and air resistance created heat on her trip up the hill.
Why has the classification of organisms changed over time?
Final answer:
The classification of organisms has changed over time due to advances in genetic analysis and a deeper understanding of evolutionary relationships, which have led to adjustments in taxonomy to reflect more accurate phylogenetic connections.
Explanation:
The classification of organisms has historically been based on observable characteristics and shared traits. However, as our understanding of microorganisms and evolutionary biology evolves, especially with advancements in genetic analysis, the taxonomy of living organisms continues to undergo refinement.
The Linnaean classification system has been used for over two centuries to categorize organisms, but recent studies, particularly in genetics, have provided insights that challenge previous phylogenetic relationships. For instance, molecular analyses have revealed unexpected evolutionary connections, like the closeness of hippos to whales instead of pigs. Hence, the phylogenetic trees, which represent hypotheses of evolutionary relationships, are updated with new data.
This progression in our knowledge impacts the classical taxonomy and necessitates changes to ensure that our understanding of life's diversity reflects its true evolutionary past and genetic relationships, avoiding misleading groupings based solely on physical resemblance.
A set of diagrams. The bottom is labeled Age in years. A log underground with many arrows representing movement from the log to aboveground, at 100 percent; Age is 0 years. A log underground with fewer arrows representing movement from the log to aboveground, at 50 percent; Age is 5,730 years. A log underground with four arrows representing movement from the log to aboveground, at 25 percent; Age is 11,460 years. A log underground with two arrows representing movement from the log to aboveground, at 12.5percent; Age is 17,190 years. Which statements describe the image? Check all that apply.
A) The wood is releasing argon gas.
B) This information is useful for dating ancient rock.
C) The process works only with organic matter.
D) The element has a half-life of 5,730 years.
E) This shows the half-life of carbon-19.
Answer:
C) The process workd onlu with organic matter
and
D) The element has a half-life of 5,730 years
Explanation:
Just took a test on this
Answer:
C) The process workd onlu with organic matter
and
D) The element has a half-life of 5,730 years
Explanation:
Explain how scientific knowledge is developed when people make observations about the natural world. Help meeee
Answer:
Scientific knowledgedevelops through making observations about the natural world. Anobservation may generate a scientificquestion, which may lead to a hypothesis. The hypothesis can be tested through experimentation. The results of experimentation lead to changes in scientific knowledge.
Which process occurs the same
number of times in both mitosis and
meiosis?
Answer:
Both mitosis and meiosis are processes of cell division.
Explanation:
They use the same steps for cell division, including prophase, metaphase, anaphase and telophase.
Mitosis and meiosis are the cell separation and distribution steps that are required for cell replication, proliferation and growth.
The steps of prophase, metaphase, anaphase and telophase happen both in mitosis and meiosis.
Mitosis is a process in which the cell splits and two alike daughter cells are formed.This type of division happens in all the bodily cells for the process of growth and to substitute the dead cells.Meiosis is a decreased selection process in which the diploid cell gets parted into four daughter cells carrying a haploid number of chromosomes.The generative cells like eggs female and sperm in the male are the cells where meiosis occurs.Therefore, both processes have the same stages of karyokinesis and cytokinesis.
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When the sea floor collides with the continental floor.
dome mountains are formed
both floors fold inward, forming a mountain range
the sea foor ships below the continental foor
the continental floor gets pushed into the mantie
When the sea floor collides with the continental floor, a process called subduction occurs. The sea floor, being more dense, sinks below the continental floor. This does not form a mountain range or domed mountains but can lead to geologic activity like earthquakes and volcanoes.
Explanation:When the sea floor collides with the continental floor, a process known as subduction occurs. This is a geological event that happens at convergent boundaries where one tectonic plate moves under another and is forced or sinks due to gravity into the mantle. The denser sea floor sinks or 'subducts' beneath the less dense continental floor, forming a deep ocean trench. This subduction can also cause intense pressure and heat, leading to the creation of volcanoes and earthquakes. While both floors do not fold inward to form a mountain range, the continental floor does not get pushed into the mantle. The pressure and heat may, however, lead to the formation of mountains on the continental crust, albeit not domed mountains specifically.
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Moving water, wind, sunlight, and heat from inside the Earth are all sources of renewable energy. What is the main benefit of using this type of energy? There is no benefit because we are using the Earth's resources and this harms the environment. The benefit of using renewable energy is that we are not burning fossil fuels. This increases the amount of carbon dioxide in the environment. The benefit of using renewable energy is that we are not burning fossil fuels. This decreases the amount of carbon dioxide in the environment. The benefit of using renewable energy is that we burn fossil fuels while extracting the energy and release carbon dioxide into the environment.
Answer:
I can not really see the options, but i will say it is because renewable resources do not run out and are better for the earth
Explanation:
Solar power is unlimited and does not need to be turned into electricity through a long process, it is ready right away
Wind power does no damage since you are not taking air, the air moves the wind machines and the movement makes electricity
Hydro power is the similar to wind power, the water pushes a wheel i believe to create energy.
Fossil fuels are bad for the earth for many reasons:
1. they are non-renewable meaning eventually they will run out
2.the gases that are released because of it are bad for the atmosphere
3.artifacts and fossils are lost
i hope this helps u
pls give a brainliest and a thx ;)
The main benefit of using renewable energy is that it decreases the amount of carbon dioxide and other greenhouse gas emissions in the environment, which is the sixth sentence.
What is renewable energy?Renewable energy sources have several benefits over non-renewable energy sources. The most significant benefit is that renewable energy sources do not produce greenhouse gas emissions, unlike non-renewable sources such as coal, oil, and natural gas. These greenhouse gas emissions contribute to global warming and climate change, which can have significant impacts on the environment, human health, and the economy.
Hence, the main benefit of using renewable energy is that it decreases the amount of carbon dioxide and other greenhouse gas emissions in the environment, which is the sixth sentence.
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If the mRNA was incorrectly made during transcription what would happen to the protein?
A.The mRNA would not be translated
B.It would definitely differ from the intended amino acid sequence
C.It could differ from the intended amino acid sequence.
D.There could not be any change to the protein
Answer:
C. It could differ from the intended amino acid sequence.
Explanation:
There are many different types of mutations when considering the transcription of DNA to mRNA. Frameshift mutation, which changes the length of the sequence, and point mutations, which affects only one amino acid both can affect what happens to the protein. However, point silent mutations affect only one amino acid and it doesn't actually change what the amino acid is, the code changed, but not the amino acid expressed. For example, if the mRNA code of GUU was incorrectly made to be GUC, the amino acid would still be valine. There are times where the amino acid is changed or the code is changed and doesn't work such as GUU incorrectly being made to AUU and the amino acid ileum is made instead of valine, but the change of an mRNA sequence doesn't always affect the expressed amino acid sequence.
identify the characteristics of protists.
check all that apply
multicellular
unicellular
autotrophic
heterotrophic
mobile
stationary
prokaryotic
eukaryotic
Answer:
Everything but prokaryotic.
Explanation:
EDGE2021, Goodluck:)
All given points are characteristics of protists except prokaryotic
Protist:It is any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both.
Examples of protists include algae, amoebas, euglena.
Most have mitochondria.
They can be parasites.
They all prefer aquatic or moist environments.
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What’s the answer?????
Answer:
1. Lysosomes are membrane bound sacs filled with enzymes.
True.
2. Which of the following organelles contain digestive enzymes that breakdown complex molecules.
Lysosome.
3. Lysosomes are membrane bound vesicles that arise from the Golgi Apparatus.
Explanation:
There isn't much of an explanation for the first or second one, but for the third lysosomes come from the membrane of Golgi apparatus, where they sort newly synthesized proteins which may be used in lysosomes, endoscopes and plasma membrane.
can someone please help me with this question
Answer:
You got it right, Its answer choice D
Explanation:
Because if the organism is performing cellular respiration, it will be taking in oxygen causing it to decrease, while carbon dioxide will be increasing
Answer:
D.) the organism is performing respiration because the carbon dioxide is increasing and the oxygen is decreasing.
Explanation:
Over time, when an organism, (for example, a cat) is breathing in a confined space for a long amount of time, the air in the space will have more carbon dioxide in it.
This is because as the cat breathes in the oxygen, it is exhaled as carbon dioxide.
Therefore, after a long period of time that cat will have breathed in a lot of the oxygen which is replaced with carbon dioxide.
I hope this helps :)
A scientist is observing a eukarotic cell and a prokaryotic cell. Which structure could she only observe in the eukaryotic cell?
Answer:
A well defined nucleus and cell organelles.
Explanation:
Eukaryotic organisms are those organisms which have true nucleus or membrane around the nucleus in its cell. In eukaryotic cells organelles such as mitochondria, ribosome, lysosomes, endoplasmic reticulum, golgi bodies and vacuoles are present. In prokaryotic cell, all the activities are performed by a single cell while in eukaryotic cell, organelles are present which performs specific functions.
Answer:
A
Explanation:
Because I just got it right
Calculate the percent increase in HFC emissions between the years 2005 and 2015. A) 10% B) 50% C) 100% D) 200%
Answer:100%
Explanation:
Answer:
C) 100%
Explanation:
What is the definition of "population growth?" Be specific! *
Answer:
Population growth is the increase in the number of individuals in a population. Global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7.774 billion in 2020.
Explanation:
Population growth is the increase in the number of individuals in a population due to more births and immigration than deaths and emigration, which is measured by the population growth rate.
Explanation:Population growth refers to the increase in the number of individuals in a given population over a specific period of time. This growth can occur due to various factors, such as a higher number of births than deaths, and the process of immigration, where individuals move into the region. Conversely, populations can decrease through deaths and emigration, where individuals leave the area. These factors together determine the population growth rate, which measures how quickly the population size changes.
Population structure, which includes the age-sex distribution, along with fertility, mortality, and migration rates, also plays a crucial role in influencing the population growth. It is important to note that populations don't always grow; their growth rates can be affected by the local economy, available resources, and environmental conditions. Demography, the study of populations, is essential to understand and manage these growth dynamics.
Which of the following has the element correctly matched with its
description? *
O
Phosphorous: Most abundant gas in the atmosphere
O
Carbon: Basis for all living things, every living thing contains this element
Oxygen: A unique element that distinguishes nucleic acids from the other
biomolecules
O
Nitrogen: A element only found solely in storage sites of plants and soil
Answer:
Carbon: Basis for all living things, every living thing contains this element
Explanation:
The only element that is correctly matched with its description is carbon.
Carbon forms the basis of all living organisms. It is an important component if major biomolecules of life such as carbohydrate, protein, nucleic acids, etc.
Phosphorus is not the most abundant gas in the atmosphere. The most abundant gas is nitrogen, making up about 78% of the atmospheric gases.
Oxygen does not distinguish nucleic acids from other biomolecules and nitrogen is found in other substances apart from storage sites of plants and soils.
The correct option is carbon which forms the basis of all living organisms.
Identify the functions of the brain.
passes information to and from
the cerebrum
is responsible for higher-level
thinking skills
helps maintain homeostasis
regulates body temperature
Answer:
1) thalamus
2) cerebrum
3) hypothalamus
Hope this helps
What should the Oreos and mice researchers do next to increase the credibility of their research?
Answer: The should gather all the data the collected on the Oreos and mice and make sure all of there data is still factual information.
Final answer:
The Oreos and mice researchers should ensure that their results are replicable by independent research, provide extraordinary evidence for extraordinary claims, and communicate their findings responsibly by contextualizing them within existing research and including outside expert opinions.
Explanation:
To increase the credibility of their research, the Oreos and mice researchers should take several key steps that align with robust scientific principles. First and foremost, they should ensure that their research results can be replicated by independent research teams. To achieve this, the researcher must provide enough detail about their experimental process so that it can be precisely duplicated. They should also aim to have their findings replicated across a wide range of conditions to verify the consistency of results.
Additionally, it is crucial that any extraordinary claims derived from their research are supported by extraordinary evidence. This means that the claims should be backed by multiple independent studies before being widely accepted. The researchers should also aim to build a corpus of studies on the phenomenon they are investigating to provide a more solid foundation for the findings.
To responsibly communicate their findings to non-experts, including journalists and the general public, the researchers should contextualize new findings within the broader landscape of existing research. Including comments from outside experts in any reporting can provide additional context and highlight the potential limitations of the study. Finally, educating consumers of science, including journalists, about the importance of replication and skepticism in science can help moderate expectations and promote a more accurate understanding of scientific progress.
Find the force of an object with mass(m) as 600kg and acceleration as 50m/s^2
Answer:
F= 3000N=3x10^3N
Explanation:
According to Newton's second law the force applied on an object causes an acceleration of a, and the relation btw the force and the acceleration is defined as follows;
F=m.aF=(60kg)x(50m/s^2)F= 3000N=3x10^3N
The force of an object with a mass of 600kg and an acceleration of 50m/s^2 is 30000 Newtons.
Explanation:The force exerted by an object can be found using Newton's second law of motion, **F=ma where 'F' is the force, 'm' is mass, and 'a' is acceleration. In this case, the mass 'm' is 600kg, and the acceleration 'a' is 50m/s^2.
By substituting the given values into the equation, we get:
F = (600kg) * (50m/s^2) = 30000N.
So, the force exerted by the object is 30000 Newtons.
Newton's second law of motion,
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1.3 kilometre =
centimetre
Answer:
130 000 cm
Explanation:
1 km = 1000 m
1 m = 100 cm
1.3 km = 1 300 m
1 300 m = 130 000 cm
Answer:
130000cm or in scientific notation = 1.3 × 10^5 cm
Explanation:
1km = 10000cm
1.3(10000) = 130000cm
A specific type of bacteria reproduces through binary fission every hour. If there are three bacteria cells to begin with, how many bacterial cells will there be in five hours?
Answer:
There will be 96 bacteria cells in 5 hours.
Explanation:
How might variations in the poison dart frogs' colors and markings affect the probability that an individual frog will survive in its environment? Construct an explanation in support of your answer.
Answer:
Depending on its coloration and markings other animals might stay away from it if it had bright markings while one with muted colors could hide more easily. Depending on the environment certain colors and variations can allow the frog to survive because it is not seen or allow it to survive because other animals are afraid to eat it.
Explanation:
The variation in the poison dart frogs' colors and markings affect the probability in various ways.
Information regarding the environment:Based on its coloration and markings other animals may stay away from it in the case when bright markings while one with muted colors could hide more easily. Based on the environment-specific colors and variations can permit the frog to survive since it is not seen or permit it to survive since other animals are afraid to eat it.
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Q1) Describe three ways food chains can be disrupted
Three ways food chains can be disrupted are:
Global warmingPollution of waterDeforestatioMeaning of food chainA food chain can be defined as a syetamtic flow of food following a pattern or hierachy. From the producers to the consumers.
A food chain is continuous as long as the producers keep producing adequate amount of food that can satisfy the cosumers.
we can conclude by saying that whenever their is a diruption in the food chain it most likely caused by the above listed.
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Final answer:
Food chains can be disrupted by invasive species, pollution, such as oil spills, and climate change, which all impact the flow of energy and balance within ecosystems.
Explanation:
Disruption of Food Chains-
Food chains can be disrupted in several ways, impacting the flow of energy through ecosystems. Here are three examples:
Introduction of invasive species that outcompete or prey on native species, altering the balance of the ecosystem.Pollution, such as an oil spill, can drastically affect the lower levels of the food chain, which in turn affects higher trophic levels.Climate change can alter habitats and the availability of resources, leading to the loss of species and disruptions in their interactions within the food web.Invasive species, pollution, and climate change are just a few ways through which the stability of food chains can be threatened, leading to vast ecological consequences.
The Pampas region in Argentina has virtually no
A grass
B. trees
C. hills
D. wildlife
Answer: i think its B trees
Explanation:
Answer:B
Explanation:
Which would be the most accurate title for this picture?
a)primary succession after a controlled fire
b)primary succession after a volcanic eruption
c)secondary succession after a controlled fire
d)secondary succession after a volcanic eruption
Primary succession after a volcanic eruption would be the most accurate title for this picture. So, the correct option is B.
What is Primary succession?The process of ecological succession known as primary succession occurs where there was previously no biological community, such as on bare rock, in sand dunes, or after a volcanic eruption. Pioneer species that can colonize bare rock and soil, such as lichens and mosses, typically initiate primary succession by doing so.
As these pioneer species slowly decay and decompose, they add organic matter to the soil and promote colonization by other plants and animals. The primary succession process can take hundreds or even thousands of years to achieve a stable climax community, which is an organism community that is mostly self-sustaining and adapted to its environment.
So, the correct option is B.
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The body plan of platyhelminthes is less advantageous than nematode because _______. Select one: a. it has flame cells b. it has no circulatory system c. it has no pseduocoelom d. it has radial symmetry
Answer:
The correct answer is option c, that is, it has no pseudocoelom.
Explanation:
Platyhelminthes are also known as flatworms. They are generally parasitic, these are triploblastic species with bilateral symmetry. In Platyhelminthes, flame cells do the function of excretion, however, these species are devoid of a circulatory system. On the other hand, nematodes are also known as roundworms and like Platyhelminthes, the nematodes are also diploblastic species with bilateral symmetry.
However, Platyhelminthes are acoelomate, on the other hand, nematodes are pseudocoelomate species. The Platyhelminthes lack a complete digestive system, while nematodes have a complete digestive system. Thus, it can be stated that the body plan of Platyhelminthes is less advantageous in comparison to nematodes because of no presence of pseudocoelom.
10
Many animals carry the parasite Giardia lamblia. When water is contaminated with feces from these animals, the water will carry
the parasite. If a person drinks the water, he or she will become infected with Giardia lamblia which will then travel to the person's
intestine and cause the disease giardiasis. What are the most likely symptoms of the disease giardiasis?
Answer:
Watery, sometimes foul-smelling diarrhea that may alternate with soft, greasy stools.
Fatigue or malaise.
Abdominal cramps and bloating.
Gas or flatulence.
Nausea.
Weight loss.
Explanation:
because the parasite is traveling through the intestine(which is a very important body part in you body)
Answer:
Its B
Explanation:
Compared to the Earth,the sun is
Answer:
hot
Explanation:
Answer:is hot
Explanation:very hot
The Yellowstone National Park Food Web Is Shown Below
what would be the most likely effect of adding wolves to the park?
A. Increased Elk population
B. Decreased cottonwood population
C. Increased Aquatic Plant Population
D. Decreased Maple Population
The most likely effect of adding wolves to the park will be an increased Aquatic Plant Population (Option C).
What are primary producers?Primary producers are organisms capable of synthesize their own food by a process called photosynthesis.
In this case, the prey target (moose) of wolves eat primary producers (aquatic plants).
In conclusion, the most likely effect of adding wolves to the park will be an increased Aquatic Plant Population (Option C).
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Adding wolves to Yellowstone National Park would most likely decrease the elk population. Wolves are a keystone species, and their reintroduction has led to increases in biodiversity and the health of the park's ecosystem.
Explanation:Based on the information provided, it can be concluded that the most likely effect of adding wolves to the Yellowstone National Park would be a decreased elk population. This is because wolves, being apex predators, directly affect the population of prey species like elk. When wolves were reintroduced to Yellowstone National Park in 1995, the elk altered their grazing behavior to avoid predation. As a result, they stopped grazing in exposed stream and riverbeds, allowing willow and cottonwood seedlings to grow. This indirectly led to an increase in biodiversity and improved the health of the park's ecosystem.
Furthermore, this change in elk behavior had other effects. The regrowth of vegetation in riparian areas, which the elk had previously overgrazed, provided habitat for other animals and notably led to the recolonization of areas by beavers. Summarily, the reintroduction of a keystone species like the wolf had considerable effects on the overall integrity and biodiversity of the Yellowstone ecosystem.
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When is cladistics more useful than Linnaean taxonomy?
O
A. When you want to determine the order of evolution
B. When you want to group organisms by traits
C. When you want to find the phylum an organism is in
D. When you want to find organisms that look similar
PLA HELPPPP
Cladistics is more useful than Linnaean taxonomy when determining the order of evolution because it analyzes ancestor-descendant relationships and constructs phylogenetic trees, showing how species are related over time.
Explanation:The question asks, 'When is cladistics more useful than Linnaean taxonomy?'
If we consider what cladistics and Linnaean taxonomy are designed to do, cladistics is a method that is employed to decipher the ancestral-descendant relationships between species by comparing shared traits, and it is centered on the construction of phylogenetic trees or cladograms. In contrast, the Linnaean system classifies organisms based on observable physical traits, regardless of their evolutionary history. When we are concerned with understanding the evolutionary history or the order in which species have evolved, cladistics—and the clades it identifies—is demonstrably more informative. Therefore, the answer is A. When you want to determine the order of evolution.
Given the context, it becomes clear that phylogenetic classification through cladistics offers a framework to understand how species evolved over time, essentially providing a visual representation of these evolutionary relationships in the form of a tree, whereas Linnaean taxonomy might group organisms together based on similarities that might not reflect their evolutionary ancestry. For a robust understanding and classification that reflects evolutionary relationships, cladistics is often more useful than the Linnaean system.
Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic isolation allow for the change of gene pools over time? Biogeographic isolation affects the random changes that take place within gene pools. Biogeographic isolation causes changes in gene pools that result from populations being separated. Biogeographic isolation determines who will win competition for mates. Biogeographic isolation determines the time that populations will breed.
Answer:
A
Explanation:
Due to evolution, there are changes in gene pools over time because: B. Biogeographic isolation causes changes in gene pools that result from populations being separated over time.
What is an evolution?Evolution can be defined as a process of gradual change in the characteristics and genetic pool (make-up) of the species of a living organism over several generations.
In Genetics, a scientific technique which is commonly used by scientist to determine evolutionary relationships between the gene pools of a population is the study of their fossils and biochemical similarity.
In conclusion, biogeographic isolation allow for the change of gene pools that result from populations being separated by several environmental or abiotic factors over time.
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A tetraploid cell that divides by meiosis produces; Apply the concept you know about meiosis to answer this question.
Answer:
Diploid gametes
Explanation:
A tetraploid cell is a cell that has four sets of chromosomes i.e. 4n. Meiosis is a kind of cell division that reduces the chromosomal number of the daughter cells (gametes) by half.
Hence, a tetraploid cell will undergo meiosis to produce daughter cells (gametes) that have a diploid number of chromosomes each (2n). Since Meiosis is a reduction division, it occurs in a two-step division process viz: Meiosis I and II. Meiosis I involves separation of homologous chromosomes while meiosis II involves separation of replicated chromosomes.
In this case, a tetraploid (4n) will have two sets of chromosomes separated into opposite cells during meiosis I. This reduces the chromosome number into 2n (diploid).