David and Luisa are trying to determine if two samples are the same or different substances. First, they observed sample 1 and sample 2. Then, they wrote down their observations. Review their observations. Then, answer the questions below.
Which student’s observations would prove more useful to a chemist?
David's observations
Luisa's observations
Explain your answer below.
Answers
Answer:
Luisa's Observation.
Explanation:
Luisa's observation is explained better than David's was, and judging by the observations, David studied the same material, while Luisa's observation contained different description, meaning that there was likely more than one substance being observed and studied.
David researched the same material, according to the observations, but Luisa's observation is better explained than David's, and since Luisa's observation had different description, it is possible that more than one item was being viewed and studied.
What is observed sample?All occurrences of a random variable are referred to as observations of that variable in statistics. The actual collection of data points is also referred to as a sample of a particular population of observations.
Any value calculated from your sample data is referred to as a sample statistic (or simply a statistic). The sample average, median, sample standard deviation, and percentiles are a few examples.
Because a statistic is based on data gathered through random sampling, which is a random experiment, it is a random variable.
Therefore, Luisa's observations would prove more useful to a chemist.
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Related Questions
First answer receives brainliest!!!!
Which letter(s) indicate a warm ocean current?
P.s- the pic goes with the question
Answers
Answer:
B
Explanation:
The genotype of an individual is expressed as follows: (a) blue eyes (b) b (c) tall (d) aa X bb
Answers
Answer:
a
Explanation:
how do you feel about using solar panels?
Answers
5) Why is mimicry a helpful adaptation?
6) Why might a predator stay away from an animal with warning coloration?
TYPE HERE
TYPE HERE
Answers
5) a mimicry could be a great fully helpful adaption because as an example, the butterfly’s that blend in with trees, or the butterfly’s that look like birds, can either scare away predators or they can blend in.
6) as an example, a blue tongue skink has a blue tongue which is very common in venomous animals. Whenever said skink is threatened, it puffs up, opens its mouth, and hisses. When most predators see the tongue, they assume it’s venomous/poisonous because of the bright color. Another example would be milk snakes who look like coral snakes to scare away predators
Carbon cycles in nature can be balanced, so the concentration of CO2 in the atmosphere stays relatively constant. However, if the total amount of trees and other plants increased worldwide, CO2 levels in the atmosphere would decrease. Explain why.
Answers
Answer:
During Northern Hemisphere spring and summer months, plants absorb a substantial amount of carbon dioxide through photosynthesis, thus removing it from the atmosphere and change the color to blue (low carbon dioxide concentrations).
I honestly don't know if this helps or not
Will mark Brainliest!!!! What is the difference between hemophilia, down syndrome, sickle cell anemia, and cystic fibrosis?
Answers
Down Syndrome- Chromosomal condition where someone possesses some or all of a third copy of the 21st chromosome
Sickle Cell Anemia- A blood disorder, the abnormality in the oxygen carrying protein, hemoglobin, found in red blood cells.
Cystic Fibrosis- A genetic disorder that causes thick mucus buildup on organs, specifically the lungs.
hope i helped! :)
The United States uses which source of energy to produce almost 40 percent of its electricity?
A.solar
B.water
C.biomass
D. wind
E.coal
Answers
The answer should be E. Coal
2 Points
What type of organism is a primary consumer?
O A. Herbivore
B. Carnivore
C. Omnivore
D. Detrivore
Answers
Answer: Herbivore
Explanation:
Answer:
Herbivore and also omnivore
Explanation:
eat plants (the first type of energy); carnivores are secondary, while detrivore is a decomposer
omnivores can work because they eat both plants and other animals
40 POINTS AND BRAINLIEST FOR THE FIRST RIGHT ANSWER
Which electromagnet is the strongest?
Answers
number 3 is the strongest electromagnet
Answer:
The second one
The last section of the article shows the severity of ocean acidification and it’s devastating effects on marine and human life by:
A.stating several facts
B.making a comparison
C.providing a detailed image
D.asking rhetorical
Answers
The last section of the article likely demonstrates the severity of ocean acidification by potentially employing methods like stating facts, making comparisons, providing images, or posing rhetorical questions. Ocean acidification, mainly caused by atmospheric CO2, has grave implications for marine ecosystems and human life.
Explanation:The student's question is referring to how the severity of ocean acidification is portrayed in the last section of an article. Highlighting the article's strategy for conveying the impact on marine and human life could involve different methods. For instance, presenting several facts would offer hard data illustrating the effects, while a comparison might show the contrast between the present state of oceans to past conditions. Providing a detailed image could visually depict the damage, and utilizing rhetorical questions might engage the reader to think critically about the issue.
Ocean acidification is a significant global issue caused primarily by atmospheric CO2 dissolving in ocean water. This results in a lower pH value in oceans, making them more acidic, and adversely affects many marine species by reducing the availability of calcium carbonate, crucial for building shells and skeletons. If CO2 concentrations continue to rise, corals and other marine life could face severe declines, impacting marine ecosystems and the humans who rely on them.
Which best describes genetic mutations?
A:Some inherited genetic mutations can be good for the offspring.
B:Different genetic mutations cause few forms of cancer.
C:Somatic mutations can be inherited from parents or acquired during life.
D:Genetic mutations that cause diseases are always passed on to offspring.
Answers
Sorry if I’m wrong
Mallory notices that after orgasm, she feels exceedingly relaxed. This is because she has had a surge of _____.
Answers
Answer:
Serotonin
Explanation:
the boa constrictor in the Everglades is an example of what species that is impacting local species
Answers
Answer:
invasive
Explanation:
Answer:
a invasive species
Explanation:
1. Explain, in your own words, the importance of recycling cellular material instead of
just throwing it away. In your response, relate recycling by the lysosome to
recycling plastic products.
please answer asap and with more than one sentance
Answers
Answer:
By recycling, it is possible to save a significant amount of energy that would otherwise be used to synthesize cellular structures.
Explanation:
Similarly to the function of lysosomes, the recycling process of plastic can help to save energy. The lysosomes are organelles that contain lytic enzymes that help to degrade cellular components, which is a necessary step before recycling these structures.
A snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of a(n) _____.
A. invasive species
B. keystone species
C. introduced species
D. extinct species
Answers
Answer:
c
Explanation:
A snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of an introduced species (Option C).
What is an introduced species?An introduced species is a species that has been introduced into a new ecosystem, generally by human activities.
In general, introduced species are not well adapted to the new environmental conditions after introduction.In conclusion, a snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of an introduced species (Option C).
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Describe how gene therapy can be a social issue and give rise to moral, ethical, and legal debates. Justify your response in two or more complete sentences.
Answers
Answer:This type of gene therapy cannot be passed to a person's children. Gene therapy could be targeted to egg and sperm cells (germ cells), however, which would allow the inserted gene to be passed to future generations. This approach is known as germline gene therapy. The idea of germline gene therapy is controversial.
Explanation: I hoped this helped, im only in 5th grade
Final answer:
Gene therapy poses ethical, social, and legal issues regarding access, equity, regulation, and the scope of genetic modification, with debates surrounding the correction of traits, enhancement, and manipulation of future generations. High-profile cases have highlighted the risks and necessitated strict regulation.
Explanation:
Gene therapy can be a social issue as it brings forth a wide array of moral, ethical, and legal debates. Issues arise over who should have access to gene therapy and whether it could create new forms of social inequality due to its cost. Furthermore, concerns exist on who will regulate and police the use of gene therapies, especially to prevent exploitation and misuse.
Another significant debate contrasts the ethical considerations of somatic cell gene therapy, which affects only the individual, versus germ-line gene therapy, which has hereditary implications, potentially affecting future generations. Questions such as which genetic traits are worthy of being corrected, if gene therapy should be used for cosmetic or enhancement purposes, or whether we should genetically manipulate the unborn for desirable traits, invoke deep ethical dilemmas about the limits of therapy.
The case of Jesse Gelsinger, among others, illustrates the need for stringent regulation and ethical consideration. It led to increased scrutiny and temporary halts in clinical trials, forcing a balance between scientific progress and human welfare. There is considerable federal and local regulation of the development of gene therapies, underscoring the potential risks and the need for rigorous evaluation of new therapies.
The carbon cycle consists of a number of biotic (living) and abiotic (nonliving) factors that act as carbon reservoirs, or locations where more carbon is stored than released. Carbon travels constantly from reservoir to reservoir, sometimes stopping for a very long time and sometimes stopping for only a short time. Which of the following are abiotic carbon reservoirs?
(choose all that apply)
oceans
animals
atmosphere
fossil fuels
sun
decomposers
Answers
Answer:
Fossil fuels
Atmosphere
decomposers
Explanation:
The following are abiotic carbon reservoirs: oceans, atmosphere, fossil fuels, and the sun. As abiotic substances don't reproduce like animals and plants, while biotic organisms can,
What is the carbon cycle?The carbon cycle is the process by which carbon is exchanged among the Earth's atmosphere, oceans, land, and living organisms. Carbon is constantly moving between these reservoirs through various processes, such as photosynthesis, respiration, and decomposition. Abiotic (non-living) reservoirs are locations where carbon is stored, but there is no biological process associated with them. The carbon cycle maintains the rate of photosynthesis too.
Hence, the following are abiotic carbon reservoirs: oceans, atmosphere, fossil fuels, and the sun. As abiotic substances don't reproduce like animals and plants, while biotic organisms can,
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Which of these is an example of redevelopment?
A. Drawing an urban growth boundary around an area
O
B. Converting rural pastureland into a new shopping center
O
C. Converting an old shopping mall into a community college
D. Putting a parking garage on an unused lot inside a city
Answers
"The correct answer is C. Converting an old shopping mall into a community college. Option C is an example of redevelopment.
Redevelopment typically refers to the process of taking an existing property or area and transforming it for a new use, often to revitalize or improve the area. Here's the reasoning for each option:
A. Drawing an urban growth boundary around an area is an example of urban planning and land-use regulation, but it does not involve the transformation of existing structures or land use within the boundary. Therefore, it is not an example of redevelopment.
B. Converting rural pastureland into a new shopping center is an example of development, as it involves creating a new structure or use on previously undeveloped land. This is not redevelopment because the land was not previously developed for another purpose.
C. Converting an old shopping mall into a community college is a clear example of redevelopment. It involves taking an existing structure that was used for one purpose (retail) and repurposing it for a completely different use (education). This fits the definition of redevelopment as it revitalizes the property and gives it a new function.
D. Putting a parking garage on an unused lot inside a city is also an example of development rather than redevelopment. While it does involve constructing a new structure, the lot was previously unused, so there is no transformation from a previous use to a new use, which is a key aspect of redevelopment.
Therefore, option C is the correct choice as it best exemplifies the concept of redevelopment."
What cell type must enter a female clams body in order for glochidia to form
Answers
Answer:
Sex cells or reproductive cells
Explaination:
Freshwater clams are hermaphrodites and produce both eggs and sperm.
So the freshwater clams reproduce by releasing their reproductive cells (sex cells or gametes) into the water column. The sex cells then enters the female clams body and undergo internal fertilization and produces glochidia. The glochidia then released in the surrounding water.
Hence, the sex cells are responsible for the reproduction of female clams.
A photoautotroph uses what for energy?
A. meat - it's a carnivore
B. plants - it's a herbivore
C. chemical energy - chemosynthesis
D. light energy - photosynthesis
Answers
Answer:
D. light energy - photosynthesis
Explanation:
Answer:
D
Explanation:
Light energy photosynthesis because they make their own food!
Which snake adaptation best helps it to survive in its community?
Answers
Which food chain is part of this food web?
A. Kelp – phytoplankton – plants
B, Kelp - sea urchin - sea otter - bald eagle
C. Bald eagle
rat - plants
D. Phytoplankton - zooplankton - rat - sea gulll
Answers
Answer:
B. Kelp - Sea Urchin - Sea Otter - Bald Eagle
Explanation:
Following the arrows shows what eats what. B is the only answer that follows the arrows, and it only ever goes up, never down as seen in C.
A scientist was studying how a specific virus infects skin cells. In a lab, the scientist exposed a group of skin cells to the virus. Over
time, the number of living skin cells in the group decreased.
Which statement explains why this change occurred?
A.
Viruses reproduce before they enter cells, and the new viruses infect these cells.
B.
Viruses eat living cells to provide energy for reproduction.
C.
Viruses reproduce inside of their host cells, eventually killing the cells.
D.
Viruses reproduce outside of cells, creating harmful chemicals that kill the cells.
Answers
Viruses cannot reproduce without a host. Viruses do not eat selves to provide energy for their reproduction.
Viruses do not reproduce outside of cells nor do they create harmful chemicals on their own.
WILL GIVE BRAINLIEST AND PLZ HURRY
5) Why is mimicry a helpful adaptation?
6) Why might a predator stay away from an animal with warning coloration?
TYPE HERE
TYPE HERE
Answers
Answer:
5) Mimicry is a helpful adaptation because a non-dangerous organism could mimic a more lethal organism so it won't get hurt or hunted.
6) A predator might stay away from an animal with warning coloration because the coloration might mimic a dangerous animal that could potentially hurt the predator. The coloration would warn the predator that the animal is dangerous and not to be messed with.
What change (or transition) in habitat did whales' ancestors make?
Answers
Answer:
Change in habitats from land to sea.
Explanation:
What is the difference between a conductor and an insulator?
Question 2 options:
A conductor can get heat transfer through convection and conduction and an insulator can only get heat transfer from radiation
A conductor lets heat pass through it easily, and an insulator does not allow heat to pass through it easily
A conductor can only get heat transfer through conduction, and an insulator can only get heat transfer through radiation
A conductor is unaffected by heat, and an insulator is extremely affected by heat
Answers
A conductor allows heat and electrical charge to pass through easily, facilitating heat transfer through conduction and convection; an insulator does not allow heat or charge to move through it easily, limiting heat transfer mainly to radiation.
Explanation:The difference between a conductor and an insulator lies in their ability to transfer heat and electrical charge. A conductor, such as metals like copper, aluminum, and silver, allows heat and electrical charge to pass through it easily because of the movement of electrons within the material. Conductors can transfer heat through physical contact (conduction) as well as by the movement of the material itself (convection). On the other hand, an insulator like wood, plastic, or rubber does not allow heat or electrical charge to move through it easily, primarily restricting heat transfer to radiation, which does not require direct contact.
Will the carbon atom's journey ever end?
Yes, it will eventually be used up
No, it will continue cycling through the Carbon cycle forever
Yes, it will eventually run out of energy
Answers
The journey of a carbon atom is a continuous cycle. It doesn't end or run out of energy but continues to be recycled in the Carbon cycle.
Explanation:The journey of a carbon atom through the carbon cycle is considered to be an ongoing process that continues indefinitely, not something that ends. This is because the carbon cycle is a closed system with carbon continuously being recycled from the atmosphere, into living organisms, and back again. It is important to note that a carbon atom doesn't 'run out of energy', instead it is transferred and transformed through various chemical reactions during its journey through the cycle.
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Examine the molecular models of two different substances below. In the
molecule on the left, the electrons are not shared equally. In the molecule on
the right, the electrons are shared equally.
Water molecule, H20 Oxygen molecule, O2
What is the result of mixing the two substances shown here together?
A. They are not attracted to each other, because water contains an
ionic bond.
O
B. They are attracted to each other, because they are both polar.
O
C. They are attracted to each other, because they are both nonpolar.
O
D. They are not attracted to each other, because one is polar and one
is nonpolar.
Answers
Answer:
D.
Explanation:
They are not attracted to each other because one is polar and one is nonpolar
The result of mixing the two substances shown here together is D. They are not attracted to each other, because one is polar and one is nonpolar. Thus, option "D" is correct.
What are polar and non-polar substances?
The polar group is hydrophilic in nature (water-loving) and the non-polar group is hydrophobic in nature (water-repelling).
The polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. It is commonly used in detergents and soaps.
Thus, option "D" is correct.
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Which factor would scientists most likely evaluate to determine the health of a marine ecosystem?
Frequency of predation
Levels of pollution
Particulates in the air
Reproductive success of consumers
Answers
Answer: levels of pollution
It’s right
A loss of species diversity in the oceans would MOST LIKELY result in a shortage of which of these? A) food B) medications C) minerals D) mountains
Answers
Explanation: loss of species means there won’t a lot of animals/plants in the ocean, which means less food.