Answer:
Because a stationary front marks the boundary between two air masses, there are often differences in air temperature and wind on opposite sides of it. The weather is often cloudy along a stationary front, and rain or snow often falls, especially if the front is in an area of low atmospheric pressure.
In North America, the eastern spotted skunk mates
in late winter, and the western spotted skunk mates
in late summer. Even though their geographic
ranges overlap, the species do not mate with each
other. What most likely prevents these two species
from interbreeding?
A. habitat isolation
B. gametic isolation
C. geographic isolation
D. reproductive isolation
Reproductive isolation is a mechanism through which species do not get to interbreed. Option D. reproductive isolation
What is reproductive isolation?This is a mechanism through which different species or populations do get to mate and produce fertile offspring. This mechanism allows the accumulation of genetic differences and favors speciation.
There are different barriers that inhibit or interrupt the genetic flow between different species.
Reproductive barriers prevent mating between two or more species. There are two types of barriers,
prezygotic ⇒ that avoids fertilization between individuals of different species, postzygotic ⇒ that impedes the zygote to develope and reach the adult stage.Pre-copulatory o pre-ziygotic:
• Ecological or by habitat isolation;
• Seasonal or temporal;
• Séxual o ethologic;
• Mechanic;
• Gametes incompatibility.
Postzygotic mechanisms or barriers include
• Hybrid inviability,
• Hybrid sterility,
• Cytoplasmic interactions.
In the exposed example occurs a seasonal difference between the mating period of the eastern spotted skunk and the western spotted skunk.
Probably, if both of them would mate during the same season and in the same area, they could reproduce.
However, since their mating season differs, individuals from each species do not get to cross and hence, produce fertile offspring.
Option D. reproductive isolation is what most likely prevents these two species from interbreeding
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What is correct regarding trans fatty acids
Answer:
They raise LDL and lower HDL
Explanation:
Write the relationship between cells, tissue and organs in human body.
(plzzzzz answer correctly)
Answer:
Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
Explanation:
anyone know this I don’t get the question
Answer: 5.000/ml
Explanation: density = mass/volume= 50/ 100=1/2 or 0.5 g/ mL
Please Help Me i need a good grade!
FAST!!!!!!
Answer:
it's the second one/B because it's the only one that is correct :)
what gene combination will have 50% chance of occurring if two heterozygous black and chickens are mated 
please answer!!
What type of invertebrate are robber crabs
Answer:
Arthropods
Explanation:
Robber crabs belong to the Phylum Arthropoda of the invertebrates in the Kingdom Animalia.
Which 4 body sydtems interact to allow a person to sneeze
Answer:
I think four body system is Muscular, immune, nervous, respiratory.
Explanation:
Identify the existence of Neutrons.
HELP ME PLEASE!!!!!!!!!!
How can the application of insecticides and herbicides affect an individual’s health? a. Insecticides and herbicides can potentially contaminate foods. b. Insecticides and herbicides increase the disease rate of agricultural plants. c. The application of herbicides and pesticides reduces the vitamin content of crops. d. Herbicides and insecticides increase the health value of crops by adding necessary nutrients.
Answer: A. Insecticides and herbicides can potentially contaminate foods.
Answer:
the answer is A
Explanation:
edge 2021
Cyanobacteria can cluster together into colonies called _______, with some discovered in Western Australia that are 3.5 billion years old. Cyanobacteria produce oxygen and convert sunlight to energy using _______. Plants and arthropods didn't make the transition to land until near the end of the _______ Period. Diverse multicellular eukaryotes didn't appear until the _______ period. A large multicellular eukaryote requires more _______ to survive than a single-cell eukaryote. Respond to the following based on your reading. Describe the biological chemical processes that were responsible for producing oxygen in Earth's atmosphere, eventually leading to the Cambrian Explosion. Explain the importance of oxygen in the evolution of large multicellular animal life.
Answer:
1.) stromatolites
2.) photosynthesis
3.) Ordovician
4.) Cambrian
5.) oxygen
6.) As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.
7.) Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.
Explanation:
From Penn
Answer:
1. stromatolites
2. photosynthesis
3. Ordovician
4. Cambrian
5. oxygen
6. As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.
7. Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.
Explanation:
Just did it on Penn Foster
Which limiting factor is this adaptation a response to
Answer:
Answe
Explanation:
A limited factor that causes adaptation is the loss of habitat,food,or new species.
Which of the following is an example of a vestigial structure?
-the wings of red-tailed hawks
-the hind limbs of a house cat
-the fins of a shark
-Wisdom teeth in humans
Answer:
the wings of a red tailed hawks
Should humans use synthetic materials that have natural material that is the same chemically? PLZ I NEED THIS NOW
Answer:
It Depends . Like Some People Use Fake Skin For Tattoos , Made To Practice Stitches , Or Injections .. It Just Really Depends On What You Are Doing If This Helps ..
Leigh's disease is a mitochondrially inherited disease with symptoms that include seizures, fatigue, impaired reflexes, breathing problems, and ataxia. The pedigree shows the presence of Leigh's disease in three generations. Individual 4 had two daughters and one son, and individual 6 had one daughter and two sons. Which of the individuals indicated are affected by Leigh's disease
About the question:
You will find the pedigree in the attached files
Answer:
individual 4 → Affected woman → Black circleindividual 5 → Affected woman or man → Black circle or squareindividual 7 → Healthy woman → Empty circleindividual 10 → Affected boy → Black SquareExplanation:
Mitochondrial inheritance is the transmission of a disease or a trait from the maternal line.
Most of the DNI is in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly transfer mitochondrial genes to the progeny, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this mitochondrial DNI, the whole progeny of the mutated woman will be affected, as they will get the mother genotype carrying the mutation. On the contrary, if an affected man is carrying a mutation in mitochondrial DNI, non of their descendants will get the disease.
Before answering the question, let us remember the pedigree symbols.
Squares represent Males/Men Circles represent Females/WomenEmpty symbols represent healthy/non-affected individualsSolid black symbols represent sick/affected individualsIn the exposed pedigree, we can see that the mother is affected by the disease (individual number 2), so all her children are also affected (individuals 4, 5, and 6) because the disease is mitochondrially inherited.
Individual 3 is a healthy man, so individual 4 must be an affected woman (Black circle). As she is the one affected, then all her children will also be affected. This couple had one boy and two girls. Individuals 8 and 9 are girls (circle), so individual 10 must be the affected boy (black square).
On the other hand, individual 6 is an affected man (black square), son of individuals 1 and 2. This man couples with a woman, and they have all healthy children. So this woman (individual 7) must be healthy. Even though the man is affected, all their children are not because their mother (7) is not. Remember that sperm cells do not transmit the mitochondrial genes to the progeny.
And finally, individual number 5 might be either a man or a woman. In any case, this person is also affected by Leigh's disease.
land where it is possible to grow crops is called
A.organic land
B.agricultural land
C.vegetative land
D.All of the above
The picture below shows the energy flow through a meadow community.
Hurry!!!
Which of the following would most likely occur to the populations of the community immediately after a wildfire burns the environment?
Group of answer choices
Hawks and foxes would increase
Hawks would increase and foxes would decrease
Meadow plants would increase and rabbits would decrease
Meadow plants and rabbits would decrease
A student made a table to show information about the physical structures and organs of birds. What statement best describes how to correct an error in the table?
A. The feathers support the body.
B. The feathers help the bird move.
C. The ovaries produce the eggs.
D. The ovaries produce the sperm.
Answer:
C
Explanation:
i go to flvs too, also, good luck on FSA
A student made a table to show information about the physical structures and organs of birds. The statement which best describes how to correct an error in the table is the ovaries produce the eggs. The correct option is C.
What are the physical structures and organs of birds?Birds are the warm-blooded animals. Their forelimbs are generally modified into wings. They have a well-developed flight muscles which help during the flight of bird. Their hind limbs are adapted for the purpose of walking, hopping, perching, grasping, wading and swimming.
The ovaries produce the eggs. The ovaries are responsible for producing eggs in birds. Therefore, if there is an error in the table that incorrectly identifies the function of the ovaries, it is important to correct it by stating that the ovaries produce the eggs.
Therefore, the correct option is C.
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List 3 characteristics of Asian
hair
Answer:
usually straight, wither dark brown or black, fastest growth rate.
Explanation:
Answer:
Its like people with straight or curly with it being black, or brown, or probly like blonde
Explanation:
HOPE HELPS !!! :D
Give a scenario in which a new ecosystem would be created
Does The translation between mRNA and amino acids is the same for all living things support the theory of evolution
Answer:
the translation between mRNA and amino acids are the same for all living sells. for example the mRNA codon CAG codes for glutamine in all living cells
True or False?
The cuticle scales of the hair
always point toward the follicle
Answer:
The cuticle is a transparent outer layer of the hair shaft. It is made of scales that overlap one another and protect the inner layers of the hair (Figure 3-4). The scales point from the proximal end of the hair, which is closest to the scalp, to the distal end, which is far- thest from the scalp
Explanation:
74. As layer upon layer of sediments are deposited, the process of the presses them
together.
Answer:
GO GET BOY
Explanation:
LO NECESITO URGENTEMENTE, PORFAVOR AYUDENME INSTRUCCIONES: lee el siguiente texto y completa las ideas con las siguientes palabras, (pueden sobrar algunas): mitótico, meiótico, haploide, somáticas, unión, gametos, fecundación, genética, variación, iguales, diferentes.
Reproducción sexual
La reproducción sexual consisten en la ___________ de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los ___________ son células especializadas que se forman por un proceso __________ y tiene en su núcleo la mitad de la información __________ de un organismo, por lo que reciben el nombre de células ___________ de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la ___________ genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son ___________ a ellos. El proceso en el que se une las células sexuales se le conoce como ___________. En los animales esta pude ser interna o externa.
Answer:
La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.
Explanation:
Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).
Which consequence is a direct result of human population growth
Answer:
One of the largest environmental effects of human population growth is the problem of Global warming.
Economic development, urbanization, energy consumption, transportation/motorization due to rapid population growth are major driving forces of air pollution in large cities.
In order to support the growing population, forests are being destroyed at an alarming rate. Deforestation occurs when humans clear forests to use the land either for agriculture or for habitation. This leads to soil erosion and the extinction of plant species. Land animals also decline in numbers and even face extinction due to human expansion that encroaches on their natural habitat and limits their ability to spread geographically.
Humans also continue to put a great demand on the natural resources of our planet. Many non-renewable resources are being depleted due to the unrestrained use of fuel and energy. Many parts of the world also suffer from a shortage of food and water.
The growth of the population puts larger demands on our already limited resources. The environment on earth is suffering from the growth of the global population. The depletion of resources and biodiversity, the production of waste, and the destroying of natural habitat are serious problems.
Explanation:
sorry it is so long but here u go plz leave a like and a rating and brainliest
The direct result of human population growth include consequences such
as pollution.
Increase in human population has led to an increase in industries and
use of automobiles which emits different gases which are harmful. They
deplete the ozone layer and cause global warming with incidences of
sunburns while others cause respiratory diseases such as asthma etc.
it has also resulted in overcrowding and reduced fresh oxygen due the
structures for different purposes.
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A scientist does an experiment in which she removes the offspring of rats from their mother at birth and has her genetics students feed and rear the offspring. Assuming that the students do not lick and groom the baby rats as the mother rats normally do, what long-term behavioral and epigenetic effects would you expect to see in the rats when they grow up
The service box is an area on the court that 1 point the person serving must stand in. the ball must land in to be a playable serve. the person returning the serve must be standing in before a server can serve
Answer:
Both players on the serving doubles team have the opportunity to serve and score points until they commit a fault *(except for the first service sequence of each new game).
The first serve of each side-out is made from the right-hand court.
If a point is scored, the server switches sides and the server initiates the next serve from the left-hand court.
As subsequent points are scored, the server continues switching back and forth until a fault is committed and the first server loses the serve.
When the first server loses the serve the partner then serves from their correct side of the court (except for the first service sequence of the game*).
The second server continues serving until his team commits a fault and loses the serve to the opposing team.
Once the service goes to the opposition (at side out), the first serve is from the right-hand court and both players on that team have the opportunity to serve and score points until their team commits two faults.
In singles the server serves from the right-hand court when his or her score is even and from the left when the score is odd.
Explanation:
A researcher is comparing amino acid sequences
for the protein hemoglobin from several primate
species. What does the degree of similarity in
sequences among the primate species indicate
about these species?
A.
how closely related they are
B.
how frequently they interbreed
C.
how rapidly they can evolve in the future
D. how efficient their circulatory systems are
Describe the stages of invasion up to and including the spread stage. Also, include one barrier to could make
an invasion fail and briefly describe it.
Answer:
Introduction, naturalization, colonization, and dispersal or spreading.
Explanation:
There are four main stages of invasion i.e. introduction, naturalization, colonization, and dispersal or spreading. In the first stage, the specie is introduced in the environment, in the second stage the specie adopt the environment, in the third stage the specie started growth and make colonies to increase its population and in the last stage the specie disperse in the environment through different means and spreading of that organism occur. The failing of adaptation to the environmental conditions leads to the failing of invasion of a specie.