Answer:
The average speed of train is 133.33km/hr.
Explanation:
We know that
Average speed= [tex]\frac{Total distance}{Total time}[/tex]
So,
average sped of the train = [tex]\frac{800 Km}{6 hr}[/tex]
= 133.33km/hr.
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A married couple plans to have children. The wife has blue eyes (a recessive trait) and her husband has brown eyes (a dominant trait). The husband’s mother had blue eyes. What percentage of their children could possibly have blue eyes?
Answer:
75%
Explanation:
The mom only carries the gene for blue eyes. The dad carries the gene for blue eyes, and the gene for brown eyes. So hypothetically speaking (because Punnet squares are only guesses/predictions) 75% of the kids could have blue eyes
How many stages of development take place in incomple metamorphosis? A.two B.three C.four D.five
Answer: isnt it C. four
Explanation:
Which of the following is not an example of coevolution? A. Prey evolve faster running to escape, and predators evolve to smarter at catching prey. B. Predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth. C. Plants evolve chemical defenses and herbivores evolve ways to neutralize the chemicals. D. Insects evolve green wings to blend into the environment, and predators evolve better eyesight to find the prey. Explain why.
The statement 'predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth' is NOT an example of coevolution.
Coevolution is an evolutionary process where two or more species evolve in a parallel manner.Coevolution is caused by an evolutionary race between species.In general, coevolution is caused by selective pressures between one taxonomic group on another.In conclusion, the statement 'predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth' is NOT an example of coevolution.
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Slow cycles release nutrients back into rapid eyeles through mechanisms, such
as
weathering
Answer:
mvghchxufududydyd6d6d6d
Explanation:
ujgjvjvkvjgchfvvh
What does the stamen consist of:
(Check all that apply)
A. pistil
B. filament
C. ovary
D. anther
Answer:
Filament and Anther
Explanation:
When tectonic plates are colliding, what is the geological event that will NOT occur at a convergent boundary?
Question 2 options:
Mountains
Volcanoes
Volcanic Island
Rift valley
The thin outer shell of Earth is broken into large pieces which is called as tectonic plates. Rift valley is not the event of collision between tectonic plates.
What is rift valley?Rift valley is the low land between highlands and mountain ranges created by geographical rift.
These can be formed on both land and deep oceans, where they are made by seafloor spreading process.
It is caused when two tectonic plates moves apart from each other.
Thus, the correct option is D.
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I know when a hot surface is touch receptors in the hand send a signal to the nervous system the nervous system then sent a signal to the musculine and the arm to contract and move the hand from the hot surface which of these best describes this example
What is the usefulness of
categorizing Earth's history
into the geologic time scale?
1. You have set up a cell-free transcription system in a test tube. By mixing DNA, RNA polymerase, sigma factors, ribonucleotides and other essential substances you are able to make mRNAs identical to those made under a variety of conditions in the cells from which these components were isolated. What would happen if you were able to remove the sigma factor first added to the tube and replace it with another sigma factor
Answer:
Different messenger RNAs (mRNAs) would have been produced
Explanation:
Sigma factors are protein subunits that form bacterial RNA polymerases and they are responsible to initiate RNA synthesis. The number of sigma factors is variable between different bacterial species. For example, Escherichia coli contains seven sigma factors, while Bacillus subtilis has at least 17 sigma factors, which control the transcription of different genes. These factors determine the specificity of the RNA polymerase to the target gene promoter regions and then control transcription initiation.
how does energy cause global warming
Answer:
Global warming is caused primarily from putting too much carbon into the atmosphere when coal gas and oil are burned to generate electricity or to run our cars. These gases spread around the planet very fast, keeping the solar heat that would otherwise be radiated out into space!
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No matter what phase water is in, the water molecules stay the same; they just move differently.”
Explain why this evidence matters:
Answer:
Think about how the water cycle works etiher look in a tetbook or something
Explanation:
8. DNA replication is a serni-conservative process that results in two DNA 1
molecules. What is true about each of the two new DNA molecules ?
Answer:
DNA replication is called semiconservative because the two resulting DNA molecules each have one new DNA strand and one old strand from the original DNA molecule.
Explanation:
During which stage of the cell cycle do Mitosis and Cytokinesis occur? (I will give brainliest?
Answer:
Mitosis occurs in Interphase and cytokinesis occurs in Anaphase
Explanation:
Which statements about geocentric model and heliocentric model are true? Select the two correct answers.
A. They both are models of the solar system.
B. They both show the position of Earth relative to the Sun.
C. They both show Earth at the center of the solar system.
D. They both show the Sun at the center of the solar system.
Answer:
A and B
Explanation:
the other 2 answers are just obviously wrong
They are both models of the solar system and they both show the position of the Earth relative to the sun. So the correct option is A and B.
What are heliocentric and geocentric models?A cosmological concept known as heliocentrism assumes that the Sun is located at or close to the center of the solar system or the universe, with the Earth and other planets revolving around it. The Greek philosophers Philolaus and Hicetas hypothesized independently that the Earth was a rotating sphere that rotated daily around a mysterious "central fire" that controlled the cosmos in the fifth century BC.
Two hundred years later, Aristarchus of Samos expanded on this concept by stating that the Sun, together with the Earth and other planets, revolved around a certain central object.
Any solar system (or universe) structure hypothesis that places Earth at the center of the cosmos is referred to as a geocentric model. Ptolemy of Alexandria's geocentric model was the most advanced (2nd century CE). It was widely believed until the 16th century when heliocentric theories like Nicolaus Copernicus took their place.
Therefore the correct options are A and B.
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body cell wall consisting of two germ layers
A drought is a period of unusually low
rainfall. A farmer notices that a well on the farm stops providing water
during a drought. A nearby lake also
has less water in it than usual. Write a
couple of sentences that explains
what has happened to the water table
in the area to cause these results.
In the drought period, the water label usually lowers due to the extreme heat of the sun that forces the water to undergo the process of evaporation and absorb all the water present on the surface.
What is drought?Drought may be defined as a brief period of abnormally dry weather sufficiently prolonged for the lack of water to cause a serious hydrologic imbalance in the affected area.
During severe droughts, people depend heavily on groundwater—the water held underground in aquifers. During these periods, the rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth of water in wells gradually increases.
Therefore, in the drought period, the water label usually lowers due to the extreme heat of the sun that forces the water to undergo the process of evaporation and absorb all the water present on the surface.
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How does RNA polymerase determine which strand is the template/antisense strand?
Answer:
Although RNA polymerase must recognize sequences on the template strand, by convention we draw the DNA sequence and regulatory signals on the "mRNA-like" strand. (This makes it simpler to directly determine the sequence of the resulting RNA.) The upper strand of DNA is the "mRNA-like" strand.
I hoped this helped out!^^
plants realease water into the atmosphere by which two processes?
Answer:
Evaporation and Transpiration
Explanation:
How does the tilt of a planet affect its temperature?
DNA controls the structure and function of a cell because...
Answer: it makes up the cell or it’s the to-do of the cell kinda like coding
Explanation:
during what stage do you have sleepwalking and sleep talking?
Sleepwalking occurs all through non-REM (NREM) sleep, normally in level 3 of the sleep cycle, which is likewise called deep sleep. Along with other parasomnias like sleep speakme, confusional arousals, and sleep terrors, sleepwalking is assessed as an NREM sickness of arousal.
HELP!!! 50PTS!!! AND WILL BE MARKED BRAINLIEST!!!
Which of the following best describes evidence from comparative biochemistry that supports the theory of evolution? (4 points)
Different mechanisms of reproduction exist within the same species.
Different metabolic pathways exist within the same species.
Different species have the same genetic code.
Different species have the same number of chromosomes.
Answer:
1. Asexual reproduction includes fission, budding, fragmentation, and parthenogenesis, while sexual reproduction is achieved through the combination of reproductive cells from two individuals.
2. Anabolism & Catabolism
3. Nearly everybody has the same genetic code. Although the sequences of bases in their DNA (and thus in the messenger RNA that is made from their DNA) vary between species and even between individuals within a species, almost all of them use the same code.
4.Yes, two or more species can have the same number of chromosomes. ... There's much more to differentiating between species than number of chromosomes. For one example, there are proteins present on eggs which 'match up' with proteins on sperm, and these are very specific.
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how is modern earth different from earth over four billion years ago?
Which of the following is not true about groundwater
A)
Its a long-term reservoir
B)
Significant during drought
C)
It is the only source of freshwater
D)
It is replenished by surface water
the correct statement is
D. It is replenished by surface water
Answer:
C - it is the only source of freshwater
Explanation:
Surface water is another source of freshwater, rendering this statement not true
What is the name of this plant cell?
The diversity of dogs today can be attributed to selective breeding,
O True
O False
What’s the answer????
How does energy transfer from the hot water to the cold air
Answer:
humidity and evaporation
Explanation:
please help! Which of the following supports that eukaryotes share a common ancestry?
Genes that contain noncoding regions introns
Circular chromosomes that do not have terminal ends
Cells containing membrane-bound organelles such as mitochondria
a, b
b, c
a, c
a, b, c
Answer:
a, c
Explanation:
Eukaryotes share a common ancestry, Genes that contain introns from non-coding regions, Cells containing membrane-bound organelles such as mitochondria.
Eukaryotes share a common ancestry?Mitochondria are cellular organelles present in practically all eukaryotic cells and responsible for the process of cellular respiration. They are found in greater numbers in cells and in cellular regions where there is greater energy expenditure.
What is introns?Introns are sections of DNA located in a gene that are removed by RNA splicing during the production of mRNA or other functional RNA.
Whit this information, we can conclude that Eukaryotes share a common ancestry, Genes that contain introns from non-coding regions, Cells containing membrane-bound organelles such as mitochondria.
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HELP!!!!!! 50PTS!!!!
Which of the following is a result of artificial selection? (4 points)
Animals with beneficial traits in a given environment survive.
Beneficial traits are selected based on the environment.
Individuals with beneficial adaptations reproduce more and pass traits on to offspring.
Crops and livestock animals bear little resemblance to wild ancestors.
Answer:
Beneficial traits are selected based on the environment.Explanation:
The Bloodhound dog breed was bred in the middle ages for an excellent sense of smell to be used for hunting.