The wild type of a species represents the characteristics that prevail among individuals in natural conditions. For dogs, the wild type has a short body, upward-pointing ears, and a curly tail. Even though dachshunds are descended from the wild-type dog, they have long bodies, downward-pointing ears, and a straight tail. Which of these best explains how the shape of the dachshund came into being?
Humans bred various dogs over many generations to select for the dachshund's shape.
Humans created a gene for the dachshund shape, which they inserted into the DNA of a wild-type dog.
Natural selection led to the shape of the dachshund over many generations.
The unique shape of the dachshund spontaneously appeared during a single generation.
Answers
Indeed, wild dogs were bred, recently in time, to select certain characteristics (mostly physical aspects like ears, tails, etc) that were defined "prettier".
For example, at a certain point, a wild dog was born with a straight tail. This dog was interbred with another straight tail dog, as to pass this characteristic to their herds, and so on until today's shape.
Option B is not true because breeds were created far before the genetic manipulations and DNA were discovered.
Option C is not true because the natural selection actually brought to wild-type dogs, an evolution of wolves.
Option D is not true because not the whole shape of the dachshund appeared spontaneously, but just one characteristic that was progressively selected by humans.
Related Questions
Which of the following is not an interaction between ecosystems? A. Competition. B. Mutualism. C. Equilibrium. D. predation
Answers
equilibrium is just a balance
The one that is not an interaction between an ecosystem is equilibrium. The correct option is C.
What is an ecosystem?An ecosystem is comprised up of all the organisms and the physical environment in which they reside.
These biotic as well as abiotic elements are connected by nutrient cycles along with energy flows.
Photosynthesis introduces energy into the system, which is then incorporated basically into plant tissue.
Every living forms, encompassing humans, is a part of all these complex networks of interdependent relationships referred to as ecosystems.
A neat and healthy ecosystems clean the water, aids in the air purification , keep the soil in healthy condition, regulate the climate, recycle nutrients, and helps us with certain food.
Predation, parasitism, as well as herbivory are the four chief sorts of species interactions that takes place among organisms in an ecosystem.
In these interactions, one organism benefits while the other gets harmed. Competition encompasses both organisms that are harmed in some way as a result of their interactions.
Thus, the correct option is C as equilibrium is not basically interaction between ecosystem.
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n the picture of a planet in orbit around its star area a is double that of area b. What is true of the time the planet takes to travel A1A2 as compared to B1B2
Answers
1. The orbit of a planet is an ellipse with the Sun (the sun is a star!) at one of the two focus.
2. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.
3. The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
So, let's use second law. The Sun sweeps out equal areas during equal intervals of time means that if A = B, the time the planet takes to travel A1A2 is equal to the time the planet takes to travel B1B2, but given that A = 2B, then takes twice the time to travel A1A2 compared to B1B2.
Answer:
twice as much
problems with solar energy include
Answers
The problems with solar energy include its intermittency and the high upfront cost of battery storage systems. The production of photovoltaic cells generates hazardous waste, and deployment of large-scale solar systems can harm undeveloped habitats. Also, solar energy cannot directly power all sectors like cars and airplanes due to its diffuse nature.
Explanation:There are a number of challenges and problems associated with the use of solar energy. Some primary issues include its intermittency, as solar energy capture is not constant, and can be particularly low during the nighttime or in seasons with less sunshine. This inconsistency can be offset by battery storage, but such storage solutions add substantial cost, need regular maintenance, and require the environmentally unfriendly process of battery replacement.
Another concern is the environmental impact of photovoltaic (PV) cells, the main technology for generating solar energy. The process of manufacturing PV cells requires the use of chemicals and solvents, generating some hazardous waste. Besides, the deployment of large-scale solar arrays in undeveloped areas or fragile ecosystems like deserts can cause habitat destruction. Solar thermal systems, another form of solar energy, also pose problems as they use potentially hazardous fluids for heat transfer and need significant amounts of water for cleaning and cooling.
Finally, solar energy can't directly power some sectors and applications such as cars and airplanes due to its diffuse nature, making it not entirely substitutable with other energy sources. While the sun provides an abundant source of energy, transitioning to a solar-powered society poses significant challenges.
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1) With your pneumatic system, how do you think your results would have been affected if there had been a leak in the tubing?
2) Given your observations for this investigation, would you rather ha a hydraulic braking system Or a pneumatic braking system in your car. Explain.
Answers
A leak in the tubing of a pneumatic system would decrease its efficiency. A hydraulic braking system would be preferred for a car.
Explanation:If there had been a leak in the tubing of a pneumatic system, the results would have been affected. A pneumatic system uses compressed air to transmit force, and if there is a leak, a decrease in pressure would occur. This would result in a decrease in the efficiency of the system, as the force applied may not be transmitted properly.
Based on the observations and the information provided, it is likely that a hydraulic braking system would be preferred for a car. A hydraulic system, like the one used in hydraulic brakes, utilizes an incompressible liquid to transmit force. This ensures that the force is transmitted efficiently without any loss due to compression or leaks.
Summarize the history of radioactivity by choosing the scientist(s) involved with each discovery. conducted experiments with uranium-containing minerals and pure uranium. came up with the term “radioactivity.” showed that uranium in a mineral gave off radiation even without being exposed to the Sun. discovered radium and polonium. conducted experiments with fluorescent minerals and photographic plates.
Answers
Marie and Pierre Curie - conducted experiments with uranium-containing minerals and pure uranium.
Marie and Pierre Curie - came up with the term “radioactivity.”
Antoine Henri Becquerel- showed that uranium in a mineral gave off radiation even without being exposed to the Sun.
Marie and Pierre Curie - discovered radium and polonium.
Antoine Henri Becquerel- conducted experiments with fluorescent minerals and photographic plates.
Answer:
✔ Marie and Pierre Curie
✔ Marie and Pierre Curie
✔ Antoine Henri Becquerel
✔ Marie and Pierre Curie
✔ Antoine Henri Becquerel
Franklin’s hometown is flooding due to a severe storm. He is evacuating the area in his vehicle. What should he do if he comes across a flooded area or flowing water?
Answers
Franklin must not drive through a flood for there may no road at all under the water, unless he is familiar with the road and the flowing water is below one foot.
Moreover, if negotiating a flooded section of road, he must drive in the middle where the water will be at its shallowest and he must not drive through water against approaching vehicle to consider other drivers.
Another term for position of an object is_____.
Answers
In physics, another term for the position of an object is 'displacement'. Displacement refers to the change in position of an object in relation to a reference frame, and specifies the direction of movement.
Explanation:In the field of physics, another term for the position of an object is displacement. Displacement refers to the change in position of an object in relation to a reference frame. For instance, if an object moves to the right relative to a whiteboard, its position, or displacement, changes.
To illustrate, imagine an airplane in motion. To describe the position of a passenger in the airplane, you would use the airplane, not Earth, as the reference frame. Therefore, the passenger's displacement could be toward the rear or front of the airplane.
The key point to remember is that displacement not only refers to the change in position, but also specifies the direction of the movement. It's therefore considered a vector, and can be either positive or negative, depending on the chosen positive direction.
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whats the basic particle that makes up matter
Answers
Explain the difference between strength,muscular endurance and power
Answers
The difference between strength, muscular endurance, and power include:
Strength simply means the ability of a muscle to be able to generate force against resistance. On the other hand, power simply means a large amount of force that can be generated quickly. Muscular endurance simply means the ability of muscles to be able to exert force against a particular thing for a period of time.Strength has to do with one repetition while power has to do with several repetitions. Muscular endurance involves constant repetition.It should be noted that power, strength, and muscular endurance are forms of muscular ability.
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Use the map to compare the locations of points X and Y. Point X is Florida.
Which of the following compares the temperature range of points X and Y?
Point X has a larger temperature range throughout the year because it is coastal.
Point X has a larger temperature range throughout the year because it is inland.
Point X has a smaller temperature range throughout the year because it is coastal.
Point X has a smaller temperature range throughout the year because it is inland.
Mark this and return
Answers
Answer:
A
Explanation:
Unsaved Earth is located in a region known as __________.
options:
a.the asteroid belt
b.the Kuiper Belt
c.the Oort Cloud
d.the Goldilocks Zone
Answers
The Goldilocks zone refers to a zone around the star that is habitable. This means that it is not too hot and not too cold.
The Kuiper belt is located beyond Neptune. The Oort cloud is even further out in the solar system, past Pluto. The asteroid belt is located in between the orbit of Mars and Jupiter.
A diagram of the carbon-oxygen cycle is shown below.
Which of the following is mainly responsible for the removal of carbon dioxide from the atmosphere?
Question 23 options:
animals
factories
soil
plants
NEED IT ASAP
AND BRAINIEST
Answers
Plants are mainly responsible for the removal of carbon dioxide from the atmosphere.
How does plants help in reducing the atmospheric CO2?During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, while the carbon dioxide is reduced. This transforms the water into oxygen and the carbon dioxide into glucose.What is photosynthesis?It is the process by which plants uses sunlight as energy to convert carbon dioxide and water into oxygen and energy in the form of glucose .Thus , plants uses CO2 to form it's food and are responsible for the removal of carbon dioxide from the atmosphere.
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Suppose you increase your walking speed from 7 m/s to 15 m/s in a period of 2 s. What is your acceleration
Answers
acceleration = 4 m/sec²
Explanation:
Acceleration is defined as the change of velocity over time
Therefore, it can be calculated as follows:
acceleration = Δv / Δt
where:
Δv is the change in velocity = v2 - v1 = 15 - 7 = 8 m/sec
Δt is the change in time = 2 seconds
Substitute with the givens in the above equation to get the acceleration as follows:
acceleration = [tex] \frac{8}{2} = 4[/tex] m/sec²
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Chalk and talc are insoluble. what do you think thus term means
Answers
Thus this means that chalk and talcum powder, both , are not soluble in water.
When these two are are soluble in other solvents, the solvent is specified.
Hope this helps. :)
Did the bird population appear to benefit from the elimination of the rattlesnakes
Answers
~~~hope this helps~~~
~~have a beautiful day~~
~davatar~
The bird population often benefits from the removal of predators, as seen with the decrease in bird species due to introduced predators like the brown tree snake in Guam. However, ecosystem dynamics can be complex, and the overall impact of predator elimination can vary.
Explanation:Based on the information provided, the bird population does seem to benefit from the elimination of predators such as rattlesnakes. For instance, in habitats where predatory snakes were introduced, such as the brown tree snake in Guam, there were significant declines in native bird populations. This indicates that predators can have a drastic effect on bird populations. Without the presence of such predators, bird species that were previously preyed upon could potentially recover in numbers.
The example given of the Yellow-billed Cuckoo shows that bird nesting preferences, and indirectly population health, can be influenced by habitat quality. A healthier habitat without the stress of predation can lead to increased bird populations. However, each ecosystem is unique, and the role of predators can be complex. In some cases, predators can control populations of species that might otherwise explode in numbers and disrupt the balance of the ecosystem, so the benefit to bird populations upon the removal of a predator can vary.
In summary, while the elimination of a predatory species like rattlesnakes can lead to the recovery of certain bird populations, the overall effect in an ecosystem may be complex and is dependent on numerous factors including habitat health, availability of food sources, and absence of other predators or stressors.
what are the approximate orbital periods of Phobos and Deimos respectively
Answers
Not all energy sources derive their energy from the sun. Choose the three from the list below that derive their energy from sources other than the sun.
chemical
heat
light
geothermal
nuclear
tidal
Answers
These are the three energy sources that derive their energy from sources other than the sun.
chemical
geothermal
tidal
Chemical energy is one of the various forms energy can take, including kinetic energy, mechanical energy, and thermal energy. It is energy stored in the bonds of chemical compounds, such as sugar and gasoline. It is one of the most convenient forms we have for storing energy. Chemical energy comes in different forms and may be released during a chemical reaction, usually in the form of heat.
Geothermal energy comes from the heat within the earth. The word "geothermal" comes from the Greek words geo, meaning earth," and therme, meaning "heat." People around the world use geothermal energy to produce electricity, to heat buildings and greenhouses, and for other purposes.
Tidal energy - earth's ocean movement, volcanism on some of Jupiter's moons, etc. - obviously comes from the gravitational interaction between large bodies. On earththe interactions with the moon are pulling water around the surface, creating some amount of heat due to friction, etc.
Answer:
Chemical
Nuclear
Geothermal
Explanation:
Food borne pathogens are harmful to the human body in any amount
Answers
It does vary between different pathogens & between the condition of the host (immunocompromised vs. healthy), but if the minimum infectious dose is not met- then the body is typically able to snuff out the intruders before they can do any real damage.
Hope that helps!
Which of the following is Not likely to put someone at risk for becoming involved in a unsafe online relationship?
A.Feeling lonely or misunderstood
B.being truthful and honest with his or her parents
C.feeling overwhelmed by personal problems
D.Having low-esteem
Answers
This is the only choice that does not put someone at risk of becoming involved in an unsafe online relationship.
The action that is not most likely to put someone at risk of becoming involved in an unsafe online relationship is being truthful and honest with his or her parents. Thus, the correct option for this question is B.
What is an Online relationship?An Online relationship may be defined as a type of relationship that is significantly built between two people who met online with the help of the internet. So, this type of relationship is also known as the internet relationship.
This type of relationship is practically unsafe because you never see a person in real life wanting to become friends through the internet without knowing the actual emotions, and feelings of each person. And people usually initiate to share their feelings, and ideology that puts them in danger or threat.
Therefore, being truthful and honest with his or her parents is the statement that is not most likely o put someone at risk of becoming involved in an unsafe online relationship. Thus, the correct option for this question is B.
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TP-14 Which of the following is a sign that the weather may change for the worse?
Answers
A sudden drop in the temperature is a sign that the weather may change for the worse for the temperature balance become vulnerable, it may cause strong storm. This change is due to the change in air, water and the resulting pressure gradients that stimulate the movement of air masses.
A sudden drop in the temperature is a sign that the weather may change for the worse. Long-term changes in temperature are referred to as weather patterns.
What is a weather change?
Long-term changes in temperature and weather patterns are referred to as weather changes. These movements might be due to natural causes, such as oscillations in the solar cycle.
An oncoming cold front is signaled by a reduction in air pressure and temperature. Severe weather, such as heavy rain, hail, destructive wind gusts, lightning, and even tornadoes, are caused by these fronts.
A sharp decrease in temperature indicates that the weather is about to shift for the worse, putting the temperature balance at risk and may be resulting in a violent storm.
This shift is caused by changes in the air, water, and the pressure gradients that follow, which encourage the movement of air masses.
Hence the sudden drop in the temperature is a sign that the weather may change for the worse.
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#28: Describe/explain three different types of waves regularly used by humans.
Answers
If I remember correctly, it was radio waves, microwaves, and visible light.
We use radio waves, like when your sitting in the car, and you turn on the radio for some music, or broadcast you wanna listen you.
We use microwaves, to cook our food faster.
We use visible light, so we can see things around us. Any other wave would be to dangerous for us.
In which type of transistor does current flow from the base to the emitter?
A. An NPN transistor, which has a p type base
B. An NPN
Answers
Answer:
The current flows from the base to the emitter in the NPN transistor.
Explanation:
NPN transistor :
NPN transistor is a semiconductor in which the positively charged is sandwiched between two negatively charged.
In NPN transistor, [tex]V_{CB}[/tex] is reverse-biases the collector-base junction and [tex]V_{BE}[/tex] is forward- biases the emitter-base junction.
Hence, The current flows from the base to the emitter in the NPN transistor.
Answer:
A. an NPN transistor, which has a p-type base
Explanation:
edge 2021
Jack pushed and pushed, but no matter how hard he tried, the refrigerator would not budge! What is the BEST explanation of what happened? A) Jack exerted a force and did work. B) Jack had no energy and did no work. C) Jack used all his potential energy to do work. D) The refrigerator did not move so no work was done.
Answers
Hope this helps.☺
Answer:
D) The refrigerator did not move so no work was done.
Explanation:
The refrigerator did not move so no work was done. Jack did exert a force and he did have energy. His muscles were twitching and using stored chemical energy. No work is done, though, if the force or energy does not cause an object to move. No movement, no work.
The rms current output in a circuit is 7.75 A. What is the maximum current?
Answers
[tex]I_{rms} = \frac{I_0}{ \sqrt{2} } [/tex]
where [tex]I_{rms}[/tex] is the rms current and [tex]I_0[/tex] is the maximum current.
If we re-arrange the formula and we use [tex]I_{rms}=7.75 A[/tex], we can find the value of the maximum current:
[tex]I_0 = \sqrt{2} I_{rms} = \sqrt{2}(7.75 A)=11.0 A [/tex]
because the universe is expanding what happens to the light from other galaxies as it reaches earth
Answers
In order to get the bike to move and stay moving, what friction must be overcome
Answers
Friction is the resistance offered against the motion of one surface over the other. This is because, at the microscopic level, each surface has hills and valleys i.e. the surfaces are not completely smooth and hence the roughness of one surface locks over the other and restricts its motion. There are two kinds of friction: static friction and kinetic friction. When the object is at rest, static friction acts. While the object is in motion, kinetic friction acts. Static friction is greater than the kinetic friction because a larger force is required to change the state of rest to motion. You must have experienced that if you do not accelerate the bike while its in motion, it would slow down and eventually stop. In order to get the bike moving, initially static friction must be overcome and thereafter, kinetic friction to make it stay in motion.
Sally was trying to calculate the speed of the hummingbirds feeding outside her window. Sally measured the distance from one feeder to the next, 24 meters. Then she sat and timed how long it took a hummingbird to fly from one feeder to the next. She timed 10 trials and calculated the average time, 3 seconds. What was the average speed of the hummingbird flying from one feeder to the other?
Answers
Answser: 8 m/s
Explanation:
Sally performed an experiment, in which she handled two variables:
distance between the feeders, andtime to fly from one feeder to next.
The distance is fixed, so she only measured it one time and it was 24m.
She timed 10 trials and calculated the average time of 3 seconds. So, you will use this time fo calculate the average speed of the hummingbird flying from one feeder to the other, using the formula:
speed = distance / timespeed = 24 m / 3 s = 8 m/s.
Hence, the result is 8 m/s.
Answer:8 m/s
Explanation:8 m/s
In a heat engine, if 700J of heat enters the system, and the piston does 400J of work, what is the final internal thermal energy of the system if the initial energy is 1200J?
Answers
Answer:
1500 J
Explanation:
We are going to use the first law of thermodynamics which can be summarized as:
Δ[tex]U=Q-W[/tex]
[tex]U2-U1=Q-W[/tex]
So, we have that:
[tex]U1=1200j \\ W=400 \\ Q=700j[/tex]
[tex]U2=Q-W+U1[/tex]
By substituting we have:
[tex]U2=700 J - 400 J + 1200J=1500J[/tex]
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If light intensity obeyed an inverse square law you would expect to find the intensity of light to decrease as the square of the distance increases?
True or false
Answers
where
[tex]I_{1}[/tex] is the intensity at distance 1
[tex]I_{2}[/tex] is the intensity at distance 2
[tex]d_{1}[/tex] is distance 1
[tex]d_{2}[/tex] is distance 2
The inverse squared law state that intensity decreases in inverse proportion to the distance squared. So if light obeyed that rule, it will decreases its intensity as the square of the distance increases.
We can conclude that the correct answer is: true.
this is a true statement
How does the current in a circuit change if the resistance is doubled?