Which best describes the white light in the visible light spectrum?
А
a mixture of every wavelength and color of visible light
B
a mixture of only seven colors and wavelengths of visible light
С
a mixture of only red, blue, and yellow wavelengths of visible light
D
a mixture of colors that cannot be broken up in the spectrum of visible light
Answer:
B
No explanation required
Most of the coal found on Earth today was formed during the Carboniferous and Permian Periods. About how old could a piece of coal be?
Answer: 298.9 million years old
Explanation: hope it helps luv ❤✨
A piece of coal would be 298.9 million years old. This is because the Permian period was initiated approximately 298.9 million years ago.
What are the characteristics of coal?The characteristics of coal are as follows:
It primarily consists of carbon, hydrogen, and oxygen.It contains a very less amount of sulfur and nitrogen.It is black in color and has a metallic luster.It is significantly hard as stone. Coal is widely utilized in power plants in order to generate electricity.According to ancient tomes and periods, the Permian period ends about 252.2 million years ago and it was the time of the initiation of the carboniferous period that further extends to the Triassic period. This was all about the time duration when the first piece of coal was found in the atmosphere.
Therefore, a piece of coal would be 298.9 million years old.
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Reflection, Refraction, Diffraction Sort
Listed in the Item Bank are key terms and expressions, each of which is associated with one of the columns. Some
terms may display additional information when you click on them. Drag and drop each item into the correct column.
Order does not matter.
ITEM BANK: Move to Bottom
Answer:
Explanation:
Refraction, on the other hand, bends the waves as they go through one medium to another medium, or change their direction. The amount or degree of the bend would depend on the medium they go through. If the mediums are different, it would substantially change the wave's path. The reason for this is because the medium changes the speed of the waves that go through them, depending on the material they are made up of.
A classic example of this would be the straw in a glass of water.
Diffraction occurs when the waves go through an opening of the medium or barrier. If the opening is smaller than the wave that passes through it, it would spread out wider, coming out of the opening, but if it is bigger, then the spread would decrease.
In x-ray crystallography, they use this by letting x-rays pass through the spaces in between the crystals
Refraction, bends the waves as they go through one medium to another medium, or change their direction.
If the mediums are different, it would substantially change the wave's path. The reason for this is that the medium changes the speed of the waves that go through them, depending on the material they are made up of.Explain with the help of example?An example of this would be the straw in a glass of water. Diffraction occurs when the waves go through an opening of the medium or barrier. If the opening is smaller than the wave that passes through it, it would spread out wider, coming out of the opening, but if it is bigger, then the spread would decrease.
Thus, Refraction, on the other hand, bends the locks as they go through one medium to another medium, or change their direction.
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which chemical substance is used to test for starch in green leaves
Answer:
iodine solution is used.
Answer:
I think that the answer is ............................... ..................IODINE
what is biotechnology?
Biotechnology is technology that utilizes biological systems, living organisms or parts of this to develop or create different products. Brewing and baking bread are examples of processes that fall within the concept of biotechnology (use of yeast (= living organism) to produce the desired product).
2.1 Define the concept study plan
Answer:
A study plan is a summary of the subject requirements of your course and indicates when planned subjects should be studied. It indicates the subjects you have completed; are currently enrolled in; plan to study in the future; and those for which you have been granted advanced standing (credit for previous studies).
Explanation:
please mark me as brainliest answer
Why do some people require bifocals (or even trifocals) as they age?
Answer:
Explanation:
People have to wear bifocals most commonly because of a condition called presbyopia. This condition occurs naturally. It causes difficulties in the eye’s focusing abilities. Bifocals work to help the eyes focus more clearly, which is why people have to get them.
As Carter was hammering a nail, he accidentally hit his thumb with the hammer. His response to this is due to a special sensory receptor called a ______.
Answer:
boom
Explanation:
booom
A. Precipitation
B. Evaporation
C. Photosynthesis
D. Commensalism
Answer:
B. evaporation
Explanation:
sorry if its wrong
Answer:
Evaporation because that’s the process in which the liquid turns into a gas
What are the five human impacts on the environment? (I would prefer them in point form, but i understand if you cant do that
Answer:
1. pollution
2.climate change
3. misuse of natural resources
4. erosion
5.loss of biodiversity
Explanation:
Answer:
overpopulation, pollution, burning fossil fuels, and deforestation.
Explanation:
Clark case summary for gizmo
Open Amplify to PM 3.2.5 and read the Article titled "Steno and the Shark".
Read the article a second time and annotate in the spaces below five important
ideas from the article that you notice. State each idea in your own words; do not
copy and paste directly from the article.
Will give Brian list to best answer
Why do you think UV intensity changes with latitude?
Answer:
Because of the angle of the Earth relative to the sun. The higher the sun is in the sky, the higher the UV radiation level.
Explanation:
So, the lattitudes toward the poles that receive sunlight are at an oblique angle, with that being said, the amount of radiation is spread to a larger area than the equator.
A person undergoes hypnosis, and her hand is put in ice. She does not show signs of being in pain. Which of these statements is consistent with the dissociation theory? O A. "My hand is not in ice." O B. "There is no ice." O c. "I do not want the hypnotist to know I feel pain." O D. 'I know my hand is in ice, but I cannot feel any pain."
Answer:D) I know my hand is in ice but I cannot feel any pain
Explanation:
I took the quiz
What will happen if you leave a potato out for a few days?
On the planet Fugus, there is a species of flowers, Dontdrinkmycola, that has two special loci: Bach01 and Bach02. At Bach01, there are two alleles in the population: A (dominant) and a (recessive). Similarly, at locus Bach02, there are two alleles in the population: B (dominant) and b (recessive).
Individuals with the A_ genotype at Bach01 have mauve colored petals, and individuals with the aa genotype have teal colored petals. Likewise, individuals with the B_ genotype at Bach02 have mauve colored petals, and individuals with the bb genotype have teal colored petals.
In a cross between two doubly heterozygous Dontdrinkmycola flowers, the following number of offspring are produced: 280 offspring with mauve colored petals, and 220 teal-colored petals. The most likely form of epistasis here is:
a. Duplicate dominant epistasis.
b. Dominant recessive epistasis.
c. Duplicate recessive epistasis.
d. Recessive epistasis.
e. Dominant epistasis.
Answer:
c. Duplicate recessive epistasis
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
How many genes are needed to control a single-gene trait? A. two B. millions C. one
Answer: one. A single gene trait is controlled by one gene, its in the name :)
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
The answer is D
Explanation:
How is water used in the environmet
Answer:Water for the ecosystem is at the heart of a wide variety of programs and results across the province. Water is carried by healthy rivers to homes, farms, schools, and industries. They nourish whole habitats and provide critical shelter for native plants and animals along the way.
Explanation:
Genes A, B , C and D are present on the same chromosome. The recombination frequency between the genes is as follows: A and B: 24%, A and D: 16%, B and C: 18%, C and D: 10%. What is the correct order of genes along the chromosome
Answer:
BDCA
Explanation:
Recombination, also know as crossing-over, refers to the exchange of genetic material (DNA) between non-sister chromatids of homologous chromosomes during cell division (meiosis). The recombination frequency refers to the frequency of crossover between two genes/loci during meiosis. The recombination frequency is not a direct result of the physical distance between genes/loci on the same chromosome, but this value provides a good approximation of such distance. The recombination frequency is measured in centimorgans (cM), where 1 cM is equal to a 1% chance of recombination. The higher the recombination frequency between two genes/loci, the greater the chance that a cross-over will occur between them, and the greater the distance between them. Moreover, the lower the recombination frequency between two genes/loci, the lower the probability that they will separate by recombination, and the more closely they are linked.
Linkage map:
B------D-----C----A
D-----------A
16 cM
D----C
10 cM
B-------------C
18 cM
B--------------------A
24 cM
Which of the following factors is most likely to decrease the stability of an ecosystem?
Answer:
i couldn't see the list of factors so i included the once i know
Explanation:
species diversity
temproal
foid web structure
Answer:
air polution, global warming, species dying out, and too many people to supply for
Explanation:
All cells require a nitrogen source to grow. The preferred nitrogen source for E. coli is an ammonium salt (e.g. NH4Cl ). The NH 4 is assimilated into cellular metabolism by glutamine synthetase (GS), which catalyzes the synthesis of glutamine from glutamate, NH 4, and ATP. Glutamine then serves as a precursor to many compounds such as histidine, tryptophan, and nucleotides. These compounds control the activity of GS by feedback inhibition. Therefore, GS responds to changes in the nitrogen balance within cells. Identify the correct feedback inhibition mechanism that controls GS and its advantage for E. coli grown in a medium with a high histidine concentration. Assume that glucose and NH, are not limiting.
A. GS is controlled by concerted feedback inhibition. Histidine alone does not alleci GS. Therefore. E. coli growth will be unaffected.
B. GS is controlled by sequential feedback inhibition. Complete inhibition of GS by histidine will impair NH+ assimilation and impair E. coli growth.
C. GS is controlled by cumulative feedback inhibition. Therefore, histidine will inhibit GS partially. The remaining GS activity can support NH+, assimilation and E. coli growth.
D. GS is controlled by enzyme multiplicity. Only histidine-responsive GS will be shut down. The other GS isoforms will remain active to support E. coli growth.
Answer:
C.
Explanation:
The glutamine Synthetase of E. coli can collectively and totally be hindered and inhibited by various and numerous nitrogen-containing compounds like histidine, tryptophan, glycine, alanine, etc at optimum concentrations. But, individually at higher concentrations, these inhibitors can only inhibit the catalytic enzyme action partially. In this way, GS is constrained by total feedback restraint. Consequently, histidine will repress GS halfway. The excess GS movement can uphold NH+, absorption, and E. coli growth development.
A gene pool consists of *
A) all the genes that mutate in a single generation
O B) all the heritable genes for traits in a population
C) all the gametes produced by a population
D) the mutated alleles for a particular trait
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
A. Bone
B. Organ systems
C. Organs
D. Specialized cells
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer: C
Explanation:
Viruses don't have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat. Unlike bacteria, which attack your body's cells from the outside, viruses actually move into, live in and make copies of themselves in your body's cells
what are the nitrates is used to make?
Answer:
fertilizers
Explanation:
Plants use nitrates as a supply of nitrogen, which is needed to make proteins for healthy growth. Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces.
dandelion flowers at any time after the seeds have germinated and the plants are mature which term best describes this kind of plant ?
Answer:
a non-flowering plant.
Answer:
Believe me it’s day neutral plant.
Explanation:
Have a good day!
What is some evidence that makes plate tectonics is such a firmly believed idea?
Answer:
There are many shreds of evidence that support the theory of plate tectonics and make it such a firmly believed idea. These pieces of evidence include fossils, glaciers, earthquakes and volcanic activity, the shape of continents, the magnetism of rocks on the seafloor, the mid-ocean ridge system, and others.
Fossils give an idea of the location of the plants and animals that once existed. Earthquakes and volcanic activity also help in determining the cause of the boundaries and rifts formed. The shape of the continents seems to be fit with one other that gives the idea that these were together and moved away from each other.
Which of the following happens before a black hole comes into existence?
Answer:
i just took this test its
An old star collapses on itself
Explanation: