Answer:
The two types of quantities scientists consider when examining is Scalars and Vectors
3. Meiosis is a process that occurs during cell division that leads to the production of gametes It halves the number of chromosomes that can be passed on to an offspring. It also produces new combinations (variations) of an organism's genetic material Use evidence you obtained from modeling meiosis to show that both statements are true
Answer:
reproduction
Explanation:
different traits
The sugar and phosphate portion of the nucleotides are found _____ on the DNA twisted ladder.
The sugar and phosphate portion of the nucleotides are found "as segments of the rails" on the DNA twisted ladder.
Which of the following is a natural resource for humans?
A-Cars
B-Electricity
C-Houses
D-Wood
Wild salmon spend most of their lives in the ocean but return to freshwater rivers to spawn, or reproduce. Most wild salmon will only spawn in specific spawning grounds in the rivers in which they were born. The construction of hydroelectric dams in rivers has blocked the paths of some salmon returning to their spawning grounds. This has led to population declines. Which method would be most effective in preventing further wild salmon population declines caused by the construction of hydroelectric dams?
A.
establishing protected regions around wild salmon spawning grounds in specific rivers
B.
observing the migration patterns of wild salmon by tagging and tracking a small sample of fish
C.
monitoring genetic diversity by using netting to catch salmon and obtain genetic samples
D.
constructing passageways next to dams to allow salmon to swim around blocked rivers
Constructing passageways near the dams to allow to salmon to swim around blocked rivers. Thus, option "D" is correct.
How, explain your answer briefly?The construction of dams in rivers has blocked the path of some salmons returning to spawning grounds.
The best way to overcome this is to make the passage ways near the dams to allow salmons to swim in areas which have blocked due to dams. So that salmons can returned to the spawning ground and can spawn which leads to increase in their population.
Thus, option "D" is correct.
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what would most likely happen if a person increased the amount of saturated fat in his or hers diet?
If a person increased the amount of saturated fat in his or her diet, then the person would be more likely to suffer from heart and blood vessel-related disease and obesity as well.
What is the harmful effect of saturated fatty acids?Because saturated fatty acids are completely saturated with hydrogen, they require more energy to break down and generally remain in the solid at room temperature, as well as inside the body, where they can induce heart-related diseases and obesity by blocking blood vessels. For example, butter contains saturated fatty acids, which are generally not recommended in large quantities.
Hence, if a person increased the amount of saturated fat in his or her diet, then the person would be more likely to suffer from heart and blood vessel-related disease and obesity as well..
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Which feature of the ocean floor includes its deepest parts?
What factors can limit growth?
competition
amount of sunlight or water
r-selected species
geographic borders
The answer is
Amount of sunlight or water.
As growth depends on sunlight and water so it is important to grow a plant in proper sunlight and giving plants regular water is also important.
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which one of the following characteristics shows discontinuous variation in humans?
A. Height
B. Length of foot
C. Weight
D. Tongue rolling
Answer:
D. Tongue rolling
Explanation:
Not many people can do this
D. Tongue rolling
What is discontinuous variation in humans?A discontinuous variant refers to such things as eye color or blood group, that have a restricted number of possible values. In other words, someone's blood can be A, B, AB, or O, but it can not be something in between.
Examples of discontinuous variants encompass tongue rolling, fingerprints, eye color, and blood groups. continuous variation fluctuates around an average or a mean of species. Discontinuous variation does not have an average or mean.
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The group of polar bears that live along the eastern coast of Russia makes up
an organism.
a community.
an ecosystem.
a population.
The cluster of polar bears that live along the eastern coast of Russia build a population. The correct option is D.
What is a population?The group of organisms living in a particular area forms the population of that given area.
As given, a cluster of polar bears that live along the eastern coast of Russia build a population.
Thus, the correct option is D.
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Genetic drift and natural selection … (a: never lead to different populations - - that happens by another mechanism in nature , (b:can lead to new species that share common ancestor.
Answer:
B.) Can lead to new species that share common ancestors
Explanation:
Genetic drift and natural selection both lead to evolution. This describes the change of a species overtime to be better suited for their environments. In some cases, this leads to the creation of an entirely new species (speciation).
One possible reason for the rise in the average air temperature at the Earth's surface is that
Answer:
cimate change
Who establishes a crime scene?
options:
crime scene photographer
criminal investigator
first responder
district attorney
Answer:
first responders
Explanation:
no need for explaining
What process causes dissolved substances to be left behind to form minerals after water in lakes or ponds evaporates?
Answer:
Precipitation
Explanation:
Precipitation refers to a process causes dissolved substances to be left behind to form minerals after water in lakes or ponds evaporates.
An organism that is eaten by a predator is
Prey is a term given to the organism that is eaten by the predators.
Match the following terms and definitions.
1.
short-term hormonal influences on animal behavior usually
occurring late in life
2.
a technique that associates a natural response to a stimulus
to an unrelated stimulus; also called Pavlovian conditioning
3. the study of animal behavior in its natural environment
4, when an animal learns not to respond to a stimulus
5. finding a solution to a once unsolvable problem
6,
learning that has taken place but is dormant until a situation
requires it
100
classical conditioning
insightful learning
ethology
latent learning
habituation
activational effects
1. Short-term hormonal influences on animal behaviour usually occurring late in life - activational effects
2. A technique that associates a natural response to a stimulus to an unrelated stimulus; also called Pavlovian conditioning -- classical conditioning
3. The study of animal behaviour in its natural environment - ethology
4. When an animal learns not to respond to a stimulus - habituation
5. Finding a solution to a once unsolvable problem - insightful learning
6. Learning that has taken place but is dormant until a situation requires it - latent learning
How, explain your answer?
Activational effects are the sudden or immediate temporary transient effects of behavioural changes due to the influence of hormones, especially the gonadal or these hormones. The behaviour change in male animals due to an increase in male se hormonal activity can be referred as an activational effect.
Classical conditioning facilitates learning of a behaviour when a conditioned stimulus is associated with an unconditioned stimulus leading to a conditioned response. Animal training by pairing a new unconditioned stimulus with an already known conditioned stimulus, a new conditioned response of behaviour change can be observed.
Ethology refers to the scientific zoological study (includes both laboratories as well as natural field studies) of animals' behavior with relation to their natural environment. It studies and compares about animal behavioral processes changes under various disciplines like ecology, anatomy, evolution etc.
Habituation is an associative learning process that results when an animal learns to resist a stimulus and not to respond to it after repeated exposure.
Insightful learning occurs when various parts of a problem are analyzed and their relationship is understood to arrive at the solution suddenly. Animals must look at a situation as a whole, and observe and analyze it to solve the problem. Some animals like chimpanzees can learn through insightful learning
Latent learning occurs without any associated reinforcements. Animals learn new behaviour through latent learning.
Thus, this could be the answer.
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PLEASE HELP PLEASE
Do you think this is a good way to eliminate invasive species from an ecosystem? Do you think the risks of the gene drive getting into another species are worth gaining biodiversity in an ecosystem? Explain your opinion.
Use of bioagent is a good way to eliminate invasive species from an ecosystem.
What is a good way to eliminate invasive species from an ecosystem?In my opinion, to eliminate the invasive species from an ecosystem we should find out its bioagent instead of chemical spraying because bioagent does not adversely affected the environment.
The risks of the gene drive getting into another species are not worth gaining biodiversity in an ecosystem because it leads to many consequences and unpredictable effects on ecosystem.
So we can conclude that use of bioagent is a good way to eliminate invasive species from an ecosystem.
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Yes, it is a good way to eliminate invasive species from an ecosystem. This is because invasive species play a critical role in the limitation of biodiversity of a particular ecosystem.
What is Biodiversity?Biodiversity may be defined as the sum total of all the variety of living organisms in a particular ecosystem.
No, the risks of the gene drive getting into another species are not worth gaining biodiversity in an ecosystem. This is because it directs considerable influences and unanticipated impacts on the ecosystem.
Therefore, it is well described above.
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A model train running on an inclined track is part of a closed system that has
316 J of mechanical energy. If the kinetic energy of the train decreases from
314 J to 250 J, what happens to the gravitational potential energy of the system?
A. It decreases from 316 J to 314 J.
B. It increases from 2 J to 66 J.
C. It decreases from 66 J to 2 J.
D. It increases from 316 J to 564 J.
Taking into account the definition of kinetic, potencial and mechanical energy, the correct answer is option B: the gravitational potential energy of the system increases from 2 J to 66 J.
Kinetic energyKinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and at rest, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its state of rest by applying a force.
Potential energyOn the other hand, potential energy is the energy that measures the ability of a system to perform work based on its position. In other words, this is the energy that a body has at a certain height above the ground.
Gravitational potential energy is the energy associated with the gravitational force. This will depend on the relative height of an object to some reference point, the mass, and the force of gravity.
Mechanical energyFinally, mechanical energy is that which a body or a system obtains as a result of the speed of its movement or its specific position, and which is capable of producing mechanical work. Then:
Potential energy + kinetic energy = total mechanical energy
The principle of conservation of mechanical energy indicates that the mechanical energy of a body remains constant when all the forces acting on it are conservative (a force is conservative when the work it does on a body depends only on the initial and final points and not the path taken to get from one to the other.)
Therefore, if the potential energy decreases, the kinetic energy will increase. In the same way, if the kinetics decreases, the potential energy will increase.
Gravitational potential energy of the system in this caseThe principle of conservation of mechanical energy can be applied in this case.
A model train running on an inclined track is part of a closed system that has 316 J of mechanical energy.
The kinetic energy of the train is 314 J at the beginning.
Replacing in the definition of mechanical energy:
Potential energy + 314 J = 316 J
and solving you get:
Potential energy = 316 J - 314 J
Potential energy= 2 J
Then, the potential energy of the train is 2 J at the beginning.
The kinetic energy of the train is 250 J at the end.
Replacing in the definition of mechanical energy:
Potential energy + 250 J = 316 J
and solving you get:
Potential energy = 316 J - 250 J
Potential energy= 66 J
Then, the potential energy of the train is 66 J at the end.
Finally, the correct answer is option B: the gravitational potential energy of the system increases from 2 J to 66 J.
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10 points!
A fungal ____________ is a haploid reproductive cell that is capable of developing into a new organism.
Answer:
it’s a spore
Explanation:
it should be a spore. It’s because the spore is the haploid.
The component molecules of cells have two main parts, the head and the tail. These parts are either hydrophobic or hydrophilic. Which is which
We can mold metals into different shapes because they are _____________.
ductile
malleable
lustrous
Answer:
We can mold metals into different shapes because they are _malleable__.
Explanation:
Malleable (ability to be hammered into thin sheets)
making nectar costs a plant energy because it uses up glucose that the plant has made. explain why the expense is worthwhile
Answer:
Nectar in flowers serves chiefly to attract pollinators, such as fruit-eating bats, hummingbirds, sunbirds, and insects. Nectaries are usually located at the base of the flower stamens, which draw animal visitors into contact with the pollen to be transferred.
Explanation:
Cancer is a disease that is caused by genetic mutations. Which health professionals are least likely to face risk factors in their work that could increase their chances of cancer?
This is the complete question.
Cancer is a disease that is caused by genetic mutations. Which health professionals are least likely to face risk factor
in their work that could increase their chances of cancer?
A. Scientists who work with toxic chemicals
B.therapist who operate radiation machine
C.nurses who treat patients with viral infections
D.researches who study DNA replication
Research that study DNA replication. Thus, option "D" is correct.
What is cancer?Cancer directs to any one of a considerable number of diseases described by the growth of anomalous cells that separate uncontrollably and have the ability to enter and destroy ordinary body tissue.
Cancer often has the ability to spread throughout your body. Cancer is the second-main cause of dying in the world.
Thus, option "D" is correct.
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What types of weather events are not yet clearly linked to climate change?
Droughts that are more frequent and severe, storms, heat waves, rising sea levels, melting glaciers, and warming oceans can all hurt animals, ruin their habitats, and disrupt people's livelihoods and societies.
What is climate change?Long-term increases in the earth's average surface temperature, as well as large-scale changes in global, regional, and local weather patterns, are caused by a considerable increase in the levels of greenhouse gases created by the burning of fossil fuels.
Dangerous weather events are growing more common and severe as climate change progresses.
Glacier melting occurs as a result of heat changes, particularly at relatively high temperatures. This is a process in which ice transforms from solid to liquid or water. Scientists have recently detected an alarming rate of glacier melting.
Unusually hot days and multi-day heat waves are a natural component of the weather's day-to-day fluctuations. Hotter-than-usual days and nights are becoming more prevalent as the Earth's temperature warms (see the High and Low Temperatures indicator), and heat waves are anticipated to grow more often and intense.
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If you were to teach your friend about Sustainable Development Goals #14 Live Below Water, how would you explain it?
Answer: I would tell them about the water pressure temperatures and the sea life that would live in the sea.:)
Explanation:
Which ,begin emphasis,two,end emphasis, statements describe how constantly changing conditions affect the overall population size of organisms living in the area?
The correct options would be B and E.
Variation in population sizeThe population size of each organism in different zones may not vary much due to the following:
Organisms in each zone have characteristics that make them be well-adapted to the zone. These include structures that help them attach to the rock, structures that help them breathe when exposed to the air, and so on.More on adaptations of organisms can be found here: https://brainly.com/question/1686177
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4. Which statement best describes how scientists formed cell theory?
A:Pasteur observed that cork was made of cells and published his findings
widely,
B:Multiple scientists and observations contributed to the formation of cell
theory.
C:Schwann observed that plants are made of cells and shared his theory at
conferences.
D:Remak wrote cell theory after realizing that cells cannot come from non-
living matter.
Answer:
A is the answer
Explanation:
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For a long time, penicillin was given to people to kill the bacteria which caused ear infections. Lately, some ear infections are not cured by penicillin. Which is the best explanation for this?
Answer:
Some bacteria have mutated and are not killed by the penicillin
Explanation:
What are the organneles that distinguish plant cell from animal cell.
Plant cells have plastids and larger vacoule and they also have tough cellulosic cell wall outer to cell membrane as a covering.
Animal cells don't have cell wall rather they have cell membrane as it's outermost covering and they have smaller vacuoles.They also don't have plastids.They have centrosome which is not found in plant cells.
Economic importance of tilapia fish
Answer:
Tilapia is one of the most productive and internationally traded food fish in the world. The production of farmed tilapia is among the fastest expanding food sectors in the world. Nile tilapia ( Oreochromis niloticus) is the most cultured freshwater species among the farmed tilapia and contributes about 71% of the world total tilapia production.
Tilapia is one of the most important farmed fish species worldwide (FAO 2018) and an important source of protein (Fitzsimmons 2000;Hai 2015). Due to its sequenced genome (Conte et al. 2017), easy reproduction, efficiency in adapting to diverse diets, high resistance to diseases and handling practices, and high tolerance of a wide variety of husbandry conditions, it is considered an ideal model in toxicological research.
Explanation:
I hope it helps
Which environment would you mostly find animals wuth chemosynthetic bacteria embedded in their tissue
hypothermal vent community.Chemosynthetic symbioses predominate in most deep-sea ecosystems, but they can also infrequently be found at near the surface vents and seeps.
Where would you anticipate to find a most aquatic life?The euphotic zone, which can be found up to 200 metres (656 feet) beneath the surface, is the uppermost portion of a marine ecosystem.Light levels are enough for routine photosynthetic activity at this depth.This area is home to most aquatic life.
Which habitat has water that is subject to tide changes?An ecosystem known as the intertidal zone can be found on sea shorelines, where a wide variety of creatures can tolerate changes in tide levels.
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