The seawater dilute the saliva in them, so the necessary digestive enzymes they can't use.
HELP
Write a micro-theme on the solar system and the interrelationships between the earth, the sun, and the planets.
About 3 million years ago, the Isthmus of Panama (a narrow strip of land connecting North and South America) formed, dividing marine organisms into Pacific and Caribbean populations. Researchers have examined species of snapping shrimp on both sides of the isthmus. Based on the morphological species concept, there appeared to be seven pairs of species, with one species of each pair in the Pacific and the other in the Caribbean. The different species pairs live at somewhat different depths in the ocean. Using mitochondrial DNA sequences, the researchers estimated phylogenies and found that each of these species pairs, separated by the isthmus were indeed each other's closest relatives. The researchers investigated mating in the lab and found that many species pairs were not very interested in courting with each other, and any that did mate almost never produced fertile offspring. Which process led to the formation of the species pairs of Pacific and Caribbean snapping shrimp
Answer:
Allopatric speciation
Explanation:
Allopatric speciation refers to the geographic separation of a continuous genetic background, originating two or more new geographically isolated groups. These divergences of the original population might be related to migration in different directions, extinction of geographically intermediate populations, or geological events. During these events of speciation, emerging new barriers impede genetic flow between groups, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.
Different stages are involved in the allopatric speciation process:
• The emergence of the barrier.
• Interruption in the genetic flow
• Slow and gradual differentiation due to the occurrence of mutations in each population and their accumulation in time.
• Genetic divergence by natural selection and reproductive isolation, impeding the two groups to mate even if the barrier disappears.
• Prezigotic isolation mechanisms favored by selection a secondary contact between the new species occurs.
The Panama isthmus is an example of allopatric speciation caused by an extrinsic geological barrier that interrupted the genetic flow between species driving to genetic changes and reproductive isolation.
Two different groups that evolved in allopatry might meet again in secondary contact if the barrier that separated them, disappears. In the Panama isthmus example, the groups that did mate, could not produce any fertile progeny because of postzygotic reproductive isolation. And the groups that did not mate, were not attracted to each other because of prezygotic reproductive isolation.
the unaided eye perceive stars of the _______ magnitude
Answer:
sixth
Explanation:
yeah that's the answer but It said to explain so I'm jus telling u
The owner of a white female poodle wants her dog to have white puppies. she takes her dog to a breeder, who tells her he will mate her poodle with a white male. Much to the owner's surprise, her poodle gives birth to a black male instead of a white one. she is suing the breeder, alleging he mated her poodle with a black male instead of a white one, which resulted in six unwanted black puppies. You know that the white hair allele is recessive to the dominant allele for black hair in poodles. would you support the owner's allegation? explain your answer.
Genetically modified organisms include microbes used in biotechnology that possess enzymes promoting antibiotic resistance. This could be a problem given the rise of antibiotic-resistant organisms. However, these engineered microorganisms do not pose a risk to public health. What do you think prevents them from spreading antibiotic resistance to pathogens outside the laboratory
Answer:
What prevents these microorganisms from spreading resistance outside the laboratory is that they are modified to not survive outside the laboratory environment.
Explanation:
Antibiotic resistant microorganisms are very dangerous and unfavorable, as they leave living beings completely completely defenseless to their attacks. However, there are microorganisms that have been modified in the laboratory, as shown in the question above, and do not present any risk to living beings, even if they develop resistance. This is because the modification that these microorganisms received makes them not survive the environmental conditions outside the laboratory, which causes them to die if they leave the laboratory.
Write mechanism of absorption
Answer: The mechanism for absorption is that a photon transfers all its energy to an electron in the absorbing material. The photon is "lost" from the light beam as it is absorbed in a single event. The electron is excited by the gain in energy to a higher energy state in the electron configuration around the atom. (hope it helps)
Answer: I don't know
Explanation: i am brainless
Which structure does a virus have in common with a prokaryotic cell?
cell wall
O nucleic acid
ribosome
capsid
Answer:
Explanation:
cell-wall
Which statement is true about climate?
what are the effects of a change in protein? there is 3
Small changes can add up over MULTIPLE GENERATIONS to make
A. the same species
B. new species
Answer:
b: new species
Explanation:
These changes are genetic mutations to their biological "code" meaning creating a new species would be possible.
Answer:
B. new species
Explanation:
Biological evolution is any change in the heritable traits within a population across generations.
Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle?
Nitrogen-fixing bacteria converts
A) nitrogen gas into ammonia
B) nitrates into nitrogen gas
C) ammonia into proteins
D) proteins into nitrates
Answer:
nitrogen gas into ammonia
The skull and vertebrae are part of the _________ in vertebrates. circulatory system endoskeleton nervous system exoskeleton Science
Answer:
Endoskeleton
Explanation:
Hope this helps!
Answer:
nerveos systum i think is tha anser
Anyone know any good books to study exam style questions for 9th grade biology?
Answer:
eph and sap and glm assessment and theory books
How do you think Madison's and Jefferson's views were used to justify secession and the Civil War about 60 years later?
Answer:
dameema
Explanation:
Madison and Jefferson were both strong advocates for states' rights and believed that the federal government should have limited powers.
Who were Madison and Jefferson?Madison and Jefferson were both strong advocates for states' rights and believed that the federal government should have limited powers. Their views were used by pro-slavery advocates in the South to justify secession and the Civil War by claiming that the federal government was encroaching upon states' rights and attempting to restrict the institution of slavery.
These advocates argued that the Constitution was a compact between independent states and that the federal government was created only to perform certain limited functions. They claimed that the federal government had overstepped its bounds and was attempting to impose its will on the South, which violated the principles of states' rights and self-government.
Although Madison and Jefferson did not explicitly support secession or the institution of slavery, their ideas were appropriated and distorted by pro-slavery advocates to advance their own agenda. The use of their views in this context highlights the complex and sometimes conflicting ways in which historical ideas and figures can be interpreted and deployed for political purposes.
Learn more about Civil war, here:
https://brainly.com/question/11874600
#SPJ2
PLEASE HELP! WILL MARK BRANLIEST!
Fill in the correct answers in the boxes below.
Answer:
The answers are as followed:
Explanation:
9: Non renewable
10: Organisms
11: Millions
Answer:
9. nonrenewable
10. I think it's plants?
11. millions of years
Explanation:
Explain what happens to an plant cell when it is removed from the organism and placed into a concentrated sucrose solution
Answer:
They shrink and pull away from the cell wall.The cell becomes flaccid. It is becoming plasmolyed. in a very concentrated solution, the cell undergoes full plasmolusis as the cells lose water
Answer:
They shrink and pull away from the cell wall. The cell becomes flaccid . It is becoming plasmolysed . In a very concentrated solution, the cell undergoes full plasmolysis as the cells lose more water.
hope it helps
Choose the phase of meiosis in column 2 that best matches each event in column 1. - one haploid set of replicated chromosomes at each spindle pole - genetic recombination events take place - shortest stage - aligning of bivalents in the center of a spindle - one haploid set of unreplicated chromosomes at each spindle pole - aligning of monovalents in the center of a spindle - separation of homologous chromosomes - separation of sister chromatids A. telophase II B. anaphase I C. metaphase I D. prophase II E. anaphase II F. telophase I G. metaphase II H. prophase I
Answer:
H. prophase I → genetic recombination events take place
C. metaphase I → aligning of bivalents in the center of a spindle
B. anaphase I → separation of homologous chromosomes
F. telophase I → one haploid set of replicated chromosomes at each spindle pole
D. prophase II → shortest stage
G. metaphase II → aligning of monovalents in the center of a spindle
E. anaphase II → separation of sister chromatids
A. telophase II → one haploid set of unreplicated chromosomes at each spindle pole
Explanation:
Through the process of Meiosis, a diploid germ cell (2n) divides and originates four daughter cells with a haploid chromosome number (n). Each daughter cell has half of the chromosomes of the original one. Meiosis is completed in two phases. During the first phase, and after replication, occurs the chromosome´s reduction division. During the second phase, the cell suffers a new, not reductive division.
1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and became visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: The pairs of homologous chromosomes randomly align in the equatorial plane. Anaphase I: occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. Telophase I: Each of the homologous pairs chromosomes is already in the corresponding poles, and the nuclear membrane forms again in each pole.2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes became lax again, and cytokinesis occurs.
Can someone pls check this
Answer:
I believe your answer is correct
If the water temperature in a lake drops from 20 degrees Celsius to 10 degrees Celsius what effect is more likely to have on aquatic animals that have a high demand for dissolved oxygen
Answer:
Explanation:
Dababy
Do you think cell division stops after a new baby is born? Why or why not?
please help me i really need it lol
Answer: cell division does not stop after a baby is born bc if it were to stop then the baby would not grow
Farmer toon soon wanted to start breeding his plants so that they are resistant to disease while producing more fruit per plant.Which plants should the farmers cross to get the desired (wanted) combination of traits
Answer:
cultivated plant variety with its wild type variety.
Explanation:
The farmer cross the cultivated plant variety to its wild type which has the characteristics of resistance against diseases. Due to crossing, the offspring produce having resistance against that disease as well as producing high yield. This type of crossing is known as artificial selection in which humans cross two organisms to get the desired characteristics in their offspring so to get a plant with resistance against disease we cross cultivated plant variety to its wild type.
Analyze the scatterplot graph.
Which trend does the graph show?
Answer:
Can you provide us with a picture of the graph?
Explanation:
No one can answer the question if we can't even see the graph you're asking about.
can anyone tell me what all books are there for cbse pcb class 11
Answer:
NCERT Biology for Class 11.
NCERT Chemistry Part I for Class 11.
NCERT Chemistry Part II for Class 11.
NCERT Physics Part I for Class 11.
NCERT Physics Part II for Class 11.
NCERT Hornbill - English Core for Class 11.
NCERT Snapshot - Supplementary English Core for Class 11.
hope it helps
Genes code for
A. proteins
B. carbohydrates
C. lipids
Answer:
A. proteins
this is the answer of your question
hope it is helpful to you
The table lists some organelles and functions. Only one pair is correctly matched.
Functions of Organelles
Organelle Function
Chloroplast Stores water and waste materials
Cell wall Supports cell membrane, maintains cell shape, and protects cell
Cell membrane Breaks down waste materials and debris
Vacuole Produces proteins for the cell
Which organelle in the table is correctly matched with its function?
Answer:
Hello, the correct answer is cell wall supports cell membrane, maintains cell shape and protects cell.
A state of economic scarcity exists when consumers:
Answer:
Scarcity exists when there is not enough resources to satisfy human wants. One of the most widely known examples of resource scarcity impacting the United States is that of oil. As global oil prices increase, local gas prices inevitably rise.
Explanation:
The relationships among different orders of millipedes are shown in the cladogram. Based on this cladogram, which statement best describes relationships among millipede orders? Stemmiulida is more closely related to Merocheta than Penicillata is to Merocheta. Spirostreptida is more closely related to Glomerida than Sphaerotheriida is to Glomerida. Polyzoniida is more closely related to Glomeridesmida than Sphaerotheriida is to Glomeridesmida. Merocheta is more closely related to Glomeridesmida than Glomerida is to Glomeridesmida.
Answer: Stemmiulida is more closely related to Merocheta than Penicillata is to Merocheta
Explanation:
Your question isn't complete as you didn't attach the picture needed to solve the question but I searched online and got the picture which is attached below.
Therefore, based on this cladogram, the statement best describes relationships among millipede orders is that Stemmiulida is more closely related to Merocheta than Penicillata is to Merocheta.
Therefore, the correct option is A
The diagram above illustrates the carbon cycle. Which of the Following components of the diagram represent carbon sinks?
A. marine photosynthesis and respiration
B. volcanoes and soil carbon
C. oceans and fossil carbon
D. factories and photosynthesis
Answer:
D) Factories and Photosynthesis
The state of maintaining a stable internal environment regardless of changing external conditions is called
The state of maintaining a stable internal environment regardless of changing external conditions is called [tex]\sf\purple{homeostasis}[/tex].
[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]
Which example below is a concern related to nuclear energy?
long-term storage of waste
supplemental energy may be needed if weather is not ideal for energy collection
can be unsightly and/or noisy
potential for floods
Answer:
C. can be unsightly and/or noisy
Explanation:
Answers A, B, and D correspond with fossil fuels (fracking, coal/gas mines), wind/environmentally-powered energy (turbines), and hydroelectric power (dams).
"Noisy" and "unsightly" are the most accurate descriptions of the nuclear energy process.
If this helped you, I'd appreciate Brainliest! <3 TY