I think the answer would be 2.) Micro evolution is the change in the gene pool and macro evolution is the formation of a new species.
Microevolution refers to small evolutionary changes within a species' gene pool, while macroevolution describes larger evolutionary changes that lead to the formation of new species over long geological time periods.
Explanation:The terms microevolution and macroevolution refer to different scales of evolutionary changes in organisms. Microevolution is the change in allele frequencies that occurs over time within a population, leading to adaptations and variations within a species. This process includes the natural selection of advantageous traits, genetic drift, mutations, and gene flow. It occurs on a relatively small scale and often over a short period of time. In contrast, macroevolution involves the evolution of entire taxonomic groups over long periods of geological time, leading to the emergence of new species (speciation), extinction events, and the evolution of major new features or body plans. It includes the accumulation of microevolutionary changes that lead to the formation of new species and larger evolutionary changes.
Food handlers are required to do which of the following at work
what is the list of things? food handlers usually have to wear hairnets, gloves and wash their hands often to prevent cross contamination and the spread of bacteria.
Food handlers are required to ; i) Deliver food ii) serve iii) package food iv) store food and v) cooking
Food handlers are workers that come in direct contact with prepared or semi-prepared food during any of the food preparation stages before it gets to the consumer.
Food handlers are required by law to be properly trained in food hygiene procedures to help prevent food contamination before it gets to its consumer. therefore food handlers are expected to obey proper food hygiene rules
Hence we can conclude that Food handlers are expected to do the following as listed above.
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Although the options related to your question is missing a general answer is provided
Match each vocabulary word to the correct definition.
1.
Annealing
2.
Complimentary base pairings
3.
CODIS
4.
Buccal cells
5.
Chromosomes
a.
A software program that contains DNA profiles of convicted offenders, missing persons, crime scene evidence, and other sources.
b.
Pairings on the DNA strand.
c.
The process of reforming a double DNA strand.
d.
Cells from the lining of the inner cheek.
e.
Rod-like structures that contain genetic material.
Annealing --> The process of reforming a double DNA strand
CODIS --> A software program that contains DNA profiles of convicted offenders, missing persons, crime scene evidence, and other sources.
Buccal Cells --> Cells from the lining of the inner cheek
Complimentary base pairings--> Pairings on the DNA Strand
Chromosomes --> Rod-like structures that contain genetic material
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Answer:
Rod-like structures that contain genetic material
Explanation:
PLEASE HELP!!! This is the act of being responsible while working on a scientific investigation?
Lab Safety
This is the act of being responsible while working on a scientific investigation; following directions, wearing apron and goggles, knowing the location of emergency equipment, etc.
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Identify the properties of heat as it relates to the molecules within a body
At the molecular level, the heat comes from the agitation of the molecules and therefore their atoms. This increase in agitation causes the molecules to be less condensed between them and will separate after breaks in the intermlecular bonds. This distends the material, as we see when we heat a metal, or a transformation of the phase of the material, such as melting ice or boiling water.
Most of the rocks we study were formed in what era?
A.Cenozoic
B.Paleozoic
C.Precambrian
D.Mesozoic
Answer: Paleozoic
Explanation:
Not as many rocks existed from the precambrian era
which of the following best indicates the sequence of oxygen flow though the parts of the respiratory and circulatory systems?
A. veins, trachea, lung capillaries, alveoli
B. trachea, alveoli, lung capillaries, arteries
C. lung capillaries, trachea, veins, alveoli
D. trachea, arteries, alveoli, lung capillaries
C
I'm kind of sure. good luck
Answer: The correct answer is -
B. trachea, alveoli, lung capillaries, arteries.
Explanation:
During respiration, atmospheric oxygen is taken in through nostril, after which it travels the respiratory route that is nostrils, followed by pharynx, trachea, bronchus and smaller branches of bronchial tree and then into the alveolus.
The oxygen is passed to lung capillaries from alveoli, which is then passed to pulmonary artery that picks up oxygen from lungs and releases carbon dioxide to be exhaled out.
Thus, option B) is the right answer.
hypothesis on food web
does the 1st part start with the sun?
Emma is curious to see how fertilizer makes a plant grow larger. After doing some research, she believes that the chemicals within the fertilizer will make a plant increase in size. She also believes that plants that do not receive fertilizer will be smaller in size. Emma plans to put the same type of plant seed into 6 pots containing soil and fertilizer and monitor how the plants grow. She runs out of fertilizer, though, and decides to put sand into 3 of the pots instead of fertilizer and soil. After the experiment finishes, Emma observes that the plants that had fertilizer grew much larger than the plants with sand. She finally concludes that fertilizer greatly increases the size of a plant. Why is her conclusion invalid?
Her conclusion is invalid because using sand instead of soil slows down plant growth. Fertilizer, on its own, does not 'greatly' increase the size of the plant.
The correct way to do this experiment would be to keep all other parameters same, except the fertilizer. This will give her accurate results.
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Why do nitrogen molecules have a bond order of three, whereas oxygen molecules have a bond order of two?
This is because the electron configuration of Nitrogen is 2.5 while that of oxygen is 2.6. This is putting into perspective that the stable configuration for this period of elements is 2.8. Therefore Nitrogen would require 3 electron to reach stable configuration (2.8) while oxygen requires 2. This means that in sharing of electrons in covalent bonds, nitrogen will form three(3) bonds while oxygen will form two (2).
Molecular nitrogen, N₂, has a bond order of three because it consists of two nitrogen atoms triple bonded to each other, whereas oxygen molecules, O₂, have a bond order of two due to each oxygen atom forming a double bond with the other oxygen atom.
Explanation:Molecular nitrogen, N₂, has a bond order of three because it consists of two nitrogen atoms triple bonded to each other. This means that they share three pairs of electrons. This triple bond is very strong, making N₂ fairly inert and difficult for living systems to break apart.
On the other hand, oxygen molecules, O₂, have a bond order of two. Each oxygen atom shares a double bond with the other oxygen atom, which involves sharing two pairs of electrons. This double bond is not as strong as the triple bond in nitrogen, allowing for easier breaking and reactivity.
In summary, the difference in bond order between nitrogen and oxygen molecules is due to the number of bonds they form and the strength of these bonds.
Which is the most sustainable practice?
A) Using more wind power
The most sustainable practice is using more wind power.
What is wind power? how it get generated?
When mechanical energy enhances a unit by harnessing wind power, it may be called a windmill, wind pump or wind charger. Wind energy can be used for anything from power on boats, battery charging or electricity to being used commercially.Wind turbines can use excess power to compress air, this is usually stored in large above-ground tanks or in underground caverns. When required the compressed air can be used through direct expansion into a compressed air motor.Using more wind power is the best practice.
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list the 5 stages of the cell cycle in order
interphase, prophase, metaphase, anaphase and telophase
Final answer:
The cell cycle includes five main stages: Interphase (including G₁, S, and G₂ phases), Prophase, Prometaphase, Metaphase, Anaphase, followed by Telophase and Cytokinesis. These stages ensure accurate DNA replication and division, and are tightly regulated to prevent errors such as those leading to cancer.
Explanation:
The cell cycle is a series of events that cells go through as they grow and divide. A eukaryotic cell cycle consists of the following five stages in order:
Interphase: Comprised of three phases: G₁, S, and G₂, where the cell grows and DNA is replicated.Prophase: Chromosomes condense, and the spindle apparatus begins to form.Prometaphase: The nuclear envelope breaks down, and spindle fibers attach to chromosomes.Metaphase: Chromosomes line up at the metaphase plate.Anaphase: Chromosomes are pulled apart to opposite poles of the cell.After these stages, Telophase follows with the decondensation of chromosomes and reformation of the nuclear envelope, and then the cell division completes with Cytokinesis, where the cell actually divides into two separate cells.These stages ensure that the cell's DNA is accurately replicated and divided between two daughter cells. Close regulation, through checkpoints, is crucial for the proper functioning of the cell cycle, and its dysregulation can lead to uncontrolled cell division, such as cancer.
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In horses, black hair is dominant, and light-colored hair is recessive. If a white stallion is crossed with a mare that is homozygous for the gene for black hair, what is the probability that ALL of the offspring will have black hair?
100%
50%
25%
0%
100 percent because the white hair is reccesive which means it would be more likely for there grandhorss to have it
good luck
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The goal of science is to explain natural phenomena .true or false
False, science aims to explain and understand. Science as a collective institution aims to produce more and more accurate natural explanations of how the natural world works, what its components are, and how the world got to be the way it is now.
Answer:
True
Explanation:
I took a test with that question and got it right.
Which is the following could be caused by a decrease in carbon fixation?
A. a decrease in the total biomass if producers in the world
B. an increase in the size of insects and arthropods
C. a decrease in total biomass of consumers in the world
D. all of these
im not 100% sure but i believe the answer is B. an increase in the size of insects and arthropods
Answer:
a decrease in the total biomass of consumers in the world
Explanation:
A decrease in carbon fixation would likely increase the amount of carbon dioxide in the air and decrease the amount of oxygen. This would change how much respiration and photosynthesis could take place, resulting in:
a decrease in the total biomass of consumers in the world,
an increase in the total biomass of producers in the world, and
a decrease in the size of insects and arthropods, since their ability to move oxygen from the air into and through their bodies is limited.
Which tool enhances weather forecasts by enabling monitoring, which is necessary for predicting global weather and environmental events?
map
satellite
weather balloon
automated weather station
The correct answer is - satellite.
The satellites are something that is crucial for the functioning of the modern day world in pretty much all aspects. They are also very important in the climatology and meteorology. The satellites are able to monitor the whole planet, thus through them it can easily be seen where the air masses are moving, what type of air masses are moving towards where, their speed of the air masses, is there clouds, and if there is where are they moving, formation of large storms etc. ll of these information from the monitoring of the satellites go to the weather stations, where the weather forecasts are made, and than through the media reach the people all over the world.
Answer:
B
Explanation:
satellite
A few drops of milk are added to a glass of water, producing a cloudy mixture. the water is still cloudy after standing in the refrigerator for a week what is this mixture called?
Homogeneous mixture
As a result of these processes, the single celled organism accomplishes
1)Gamete production
2)energy production
3)sexual reproduction
4)asexual reproduction
Answer:
The correct answer is option 4 (asexual reproduction).
Explanation:
Asexual reproduction is a type of reproduction in which an organism produces genetically identical offspring's to the parents without involving contribution of genetic material of another individual. It is primary form of reproduction for single-celled organisms.
Mechanism of asexual reproduction involves:
1. Nuclear division- marked by the synthesis of DNA and
2. Cytokinesis- marked by the division of the cell into two identical daughter cells.
Asexual reproduction do not involve fertilization, reduction in chromosome and meiosis.
So, exact copies of parent cells are produced with identical genetic material content.
Thus, option 4-asexual reproduction is the correct answer.
As a result of these processes, the single celled organism accomplishes gamete production, energy production, reproduction of both types. All options are correct.
Several critical processes are carried out by the single-celled organism:
Gamete production: Gametes, which are specialised cells engaged in reproduction, are produced by single-celled organisms to reproduce sexually.
Energy production: Single-celled organisms, like all living things, require energy to carry out their biological functions.
Gamete fusion reproduction: Single-celled organisms may reproduce, integrating genetic material from two parents to generate children with distinct genetic characteristics.
Asexual reproduction: Many single-celled organisms may reproduce asexually in addition to sexually.
Thus, all options are correct.
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Polygenic genetic traits follow a _____ inheritance pattern
Answer:
Because multiple genes are involved, polygenic traits do not follow Mendel's pattern of inheritance
Explanation:
hope this helps
Answer:
there u go can u give me brainlist
Explanation:
Using the table, which statement is true?
Question 12 options:
Organisms in both Groups A and B have similar mechanisms for controlling their internal temperatures.
Organisms in Group A have fewer mechanisms for controlling their internal temperatures than those in Group B.
Organisms in both Group A and B usually coexist peacefully.
Organisms in both Group A and B are extinct species.
Your answer would be B.
Answer:
It is B : Organisms in Group A have fewer mechanisms for controlling their internal temperatures than those in Group B.
Explanation:
Which air mass has formed immediately north of Antarctica in the image ??
Maritime Polar
Continental Polar
Maritime Tropical
Continental Tropical
Answer:
Option (1)
Explanation:
Maritime polar air masses are normally characterized by the cool, moisture containing, unstable type of air mass, that are basically found in the higher latitudes, specially near the poles. It is designated as 'mP'.
This air masses also originates from the continental areas forming continental polar air masses over the region of Asia and it further moves in the western direction over the Pacific ocean. During this time of air, it attains the warmth and moisture from the Pacific ocean.
In addition to this, they also originate from the Northern side of the Atlantic Ocean and further move towards the southwestern direction and thereby reaches the Northeastern states.
Thus, in the given image, the air mass forming over the northern side of Antarctica is the Maritime polar air mass.
Hence, the correct answer is option (1).
how is sanitary landfill different from dump
A sanitary landfill is an engineered site designed to manage waste with protective measures such as liners and leachate treatment, while a dump is an unregulated site that poses environmental risks.
Explanation:How is a sanitary landfill different from a dump? A sanitary landfill is a carefully designed structure built into or on top of the ground in which waste is isolated from the surrounding environment. This isolation is accomplished with a bottom liner and daily covering of soil. Landfills also have systems to manage leachate, which is contaminated water that moves through or drains from a landfill, and to collect and treat landfill gas. On the other hand, a dump is an area where trash is simply deposited and sometimes burned without any measures to protect the environment, leading to problems such as air pollution, smog, and potential groundwater contamination due to absence of linings and leachate treatment systems.
The term vestigial comes from the Latin word vestigium, which means track or footprint. Explain how this relates to the meaning of vestigal structures
Which statement does NOT correctly describe our sun? A. Our sun is an average sized star B. Our sun is a very old star C. Our sun has an average brightness D. Our sun is yellow-white
C, because the magnitude is -26.74
Final answer:
The incorrect statement about our Sun is that it is a very old star, whereas it is actually a middle-aged yellow dwarf star with average size, brightness, and a yellow-white color, expected to remain stable for about 5 billion more years.
Explanation:
The statement that does NOT correctly describe our Sun is that 'Our sun is a very old star.' Our Sun is not considered to be very old in astronomical terms. Instead, it is a middle-aged star that has been a main-sequence star for about 5 billion years and will remain in this phase for approximately 5 billion more years. The Sun is a yellow dwarf star that is average in size, brightness, and color, described as yellow-white. Comparing a red dwarf and a yellow dwarf of equivalent size, the yellow dwarf will have a greater temperature; the assertion that this is because yellow light has lower frequency is not the reason—temperature in stars is related to the mass and internal processes rather than the frequency of the light they emit.
True or false: when maintaining good posture the body alignment favors the position that requires the least amount of muscular work and places the most strains on muscles, ligaments, and bones.
FALSE
"Good posture involves training your body to stand, walk, sit, and lie in positions where the least strain is placed on supporting muscles and ligaments during movement or ... The spine's curves work like a coiled spring to absorb shock, maintain ... be at eye level, head position should include ears aligned with shoulders."
My source is https://mayfieldclinic.com/pe-posture.htm
plz give me a brainliesttt
This is false.
Hope this helps.
Match the object with its characteristic
Moon: Not magnetic
Compass: Permanent Magnet
MRI: Not Magnetic
Answer:
The correct matches are:
Moon: Not magnetic
Compass: Permanent Magnet
MRI: Not Magnetic
Explanation:
Moon does not show any type of magnetism as it is not magnetic. Compass has a permanent magnet in itself. The north pole is indicated by the north pole indicator in the compass. Its needle is a free moving magnet that aligns according to the north pole.
MRI is a scan that uses strong radio waves and magnetic fields to provides fine images of inside the body. It contains two large tubes of electromagnets.
Thus, the correct answer is Moon- Not magnetic
Compass- Permanent Magnet
MRI- Not Magnetic
which statement best explains why cells separate and expel waste.
1 it releases energy necessary for organisms to survive
2 it helps in growth and repair of cells of orgasms
3 it help remove toxins from the body to maintain homeostasis
4 it helps break down glucose into useful energy in plants
I would say the 2nd one It helps growth and repair of cells of orgasms
But your school would probably say the 3rd one It helps remove toxins from the body to maintain homeostasis
Answer:
3. it help remove toxins from the body to maintain homeostasis
Explanation:
Our cells produce a lot of waste that must be eliminated (excreted) from the body. These residues are called excreta. The residues formed from the chemical reactions that take place inside the cells can be eliminated through:
of the respiratory system (carbon dioxide) skin (sweat) urinary system (urine)Our cells expel these substances to maintain the dynamic balance (homeostasis) of our body and promote our well-being.
In the diagram, the top square and circle represent the _____________ generation.
A) F1
B) F2
C) G
D) P
Answer:
p
Explanation:
Answer: P generation
Explanation:
These are the P generation, that is the parental generation that gives rise to subsequent F1 and F2 generations.
Which trial in the table of data shown has questionable data
Answer: dataset Z
The genus of aquatic plants known as Elodea is composed of 6 species that are also called waterweeds. Native to South and North America, these plants are very popular in aquariums.
The table in the image presents the stem growth of plant stems in 22 days. In three of the trials, the stems grow constantly. However, in dataset Z the growth reaches a maximum in day 15, followed by a decrease in day 22.
As nothing additional is mentioned in the question about the presence of any possible species that may feed on these plants, this decrease is anomalous. As it is absent in the other trials, it is safe to assume that a measurement error has occurred. Thus, dataset Z has questionable data.
Which of these would help reduce the amount of carbon dioxide produced from your answer from question 1
A). Add a plant to the flask
B). Add a goldfish to the flask
C). Remove a plant from the flask
D). Do nothing else to carbon dioxide will naturally become diluted
A, because plants consume carbon dioxide and produce oxygen
Add a plant to a flask
Which of the following is a source of carbon dioxide in the atmosphere?
factories
plants
sunlight
animals
Answer:
The answers are Factories, Plants, and Animals. (not sunlight)
Explanation:
The source of carbon dioxide in the atmosphere is Factories, Plants, and Animals.
What is carbon dioxide?Carbon The main source of the increase in dioxin concentrations is the combustion of fossil fuels for energy. We are adding carbon to the atmosphere in only a few hundred years that plants removed from the atmosphere through photosynthesis over many millions of years in the form of fossil fuels like coal and oil.
Annual emissions from burning fossil fuels have increased steadily every ten years since the middle of the 20th century.
Experts on the carbon cycle estimate that over the decade from 2011 to 2020, natural "sinks"—processes that take carbon from the atmosphere—on land and in the ocean absorbed the equivalent of nearly half of the carbon dioxide humans released annually.
The amount of carbon dioxide in the atmosphere rises every year because we release more carbon dioxide into the atmosphere than natural processes can absorb.
Therefore, The source of carbon dioxide in the atmosphere is Factories, Plants, and Animals.
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