Answer:
Silk is beautiful, highly-desirable and pricey. Do you know how it is produced?
Silkworms are the offspring of moths . They spew out thread from tiny holes in their jaws, which they use to spin into their egg-bearing cocoons. This entire production takes a mere 72 hours, during which time they produce between 500-1200 silken threads. These miniature, mulberry leaf-munching marvels lay, at minimum, 500 eggs each spring, thereby increasing the number of workers for the production line.
The ancient Chinese unearthed the silkworm's secret, and were the first to spin the silkworm's threads into cloth. They kept this covert, top-secret operation, from the rest of the world by imposing the death sentence upon those who smuggled the worm or its eggs out of China. Eventually, however, the secret was out, and silkworms are now farmed for their silk, in China, of course, in Japan, in India, in France, in Spain, and in Italy. These countries harness the power of the silkworm through a tedious, labor-intensive, time-consuming process, a process which prominently figures into the price of silk.
Farm workers painstakingly place the 500 plus eggs the grayish-white moth lays, upon strips of paper or cloth, until the following spring, when the incubated eggs hatch, and the tiny, black worms emerge. Once hatched, workers transport the worms to trays brimming with the worm's favorite fodder of finely chopped, white mulberry leaves. After approximately 6 weeks, the satiated worms begin slowly to sway their heads back and forth to signal that show time is at hand.
Once the silkworm completes its cocoon, the farmer snatches his cocoon from him, to prevent the shrunken chrysalis, carefully encased inside, from hatching into a moth in 12 days. The silk farmers ensure that this event does not transpire, and does not kill his moneymaking venture, by exposing the cocoons to heat, thereby executing the chrysalis. Now, the silkworm's labor of love is prepared for the silk production process.
The process begins by bathing the now-empty cocoons in troughs of warm water, which serves to soften the gum binding the silken filaments together. He now proceeds with the arduous task of unraveling several cocoons, and winding the filaments onto a reel that twists 10-12 filaments together into a "single" thread of silk. The end product is a skein of raw silk, which the farmer profits from by selling to the highest bidder.
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Explain how natural selection can impact allele frequencies (amount of traits seen) of a population
Answer:
Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population. ... Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes).
Explanation:
Various species of birds have evolved characteristics that help them survive in their own
environments. The illustrations below show two different kinds of bird feet.
In what types of environments are birds with such feet likely to be found?
a. Water and wetlands
b. Pine and fir forests
c. Mountains and rocky cliffs
d. Deserts and deciduous forests
Answer:
water and wetlands
Explanation:
water and wetlands
HOW DO THE OCEANS CURRENTS AFFECT CLIMATE
Answer:
Explanation:
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
what is a possible effect of an error during transciption?
Answer: "Game On"
Explanation:
An uncorrected error in DNA transcription can lead to a potential change in amino acid sequence in the protein produced from the transcription.
rite the complementary strand for this DNA sequence: TACTGTAAAG
Answer:
ATGACATTTC
Explanation:
How do greenhouse gases such as carbon dioxide cause global warming?
Answer & Explanation:
Greenhouse gases such as carbon dioxide and other gases trap some of the Earth's outgoing energy, which retains heat in the atmosphere, causing global warming.
Hope that helps you! :3
Why is the research on plant material mentioned in the article important to Rohit Karnik’s work on membranes?
Answer: The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in fraction system.
Explanation: Like wood, these membranes allow water to pass through, but not bacteria. Mr. Karnak might be able to apply the research on the wood to his designs.
Answer:
The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in filtration systems. Like the wood, these membranes allow water to pass through, but not bacteria. Mr. Karnik might be able to apply the research on the wood to his designs.
Explanation:PLATO
Distinguish between tissue fluid and lymph
Answer:
Fluid found in the spaces around the cells. It comes from substances that leak out of blood capillaries. As new tissue fluid is made, it replaces older fluid, which drains towards lymph vessels. When it enters the lymph vessels, it is called lymph.
Explanation:
Which of the following did you include in your response?
protein
non-protein, also called a cofactor
Answer:
coenzyme
Explanation:
they catilize reactions
What happens to the amount of energy that is used up during photosynthesis?
A. It changes to an equal amount of chemical energy.
B. It changes to a lesser amount of chemical energy.
C. It changes to a higher amount of solar energy.
D. It changes to an equal amount of solar energy.
I need this like ASAP im in the test right now
Answer:
B
Explanation:
It changes to a lesser amount of chemical energy. ... It forms from an equal amount of potential energy. It forms from an equal amount of radiant energy.
The amount of energy that is used up during photosynthesis changes to a lesser amount of chemical energy. That is option B.
What is photosynthesis and it's effects?Photosynthesis is the process by which green plants that posses chlorophyll traps in energy from sunlight and uses it to convert solar energy to chemical energy which is the form of energy that is useful for living organisms.
This is carried out by the absorption of light by the green pigment, chlorophyll. This helps in the splitting of water molecules which further react with carbon dioxide to form sugar
Therefore, the amount of energy that is used up during photosynthesis changes to a lesser amount of chemical energy because of the sugar that is produced as by product.
Learn more about photosynthesis here:
https://brainly.com/question/19160081
Sulfuric and nitric acids are ___ pollutants that form acid precipitation.
Answer:
ozone is bad because it can damage living tissue ... Sulfuric and nitric acids are ___ pollutants that form acid precipitation. secondary.
what is photosynthesis equation (in words)
Answer: The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.
Explanation:
Why is the vascular cambium important?
It absorbs oxygen.
It creates new bark.
It provides nutrients.
It allows the tree to stand erect.
why domestic tourists prefer to travel in December
Answer:
Countries rely on domestic tourism as a tool to reduce poverty ,improve infrastructure, generate employment to drive economic growth.
Explanation:
What makes an organism fit for its environment is any trait that helps it survive the longest, even if it doesn't reproduce.
Answer: A cactus has needles to prevent animals from eating the water out from it.
Explanation:
inorganic chemicals definition
Reproductive isolation occurs when
A- some catastrophic event greatly reduces the size of the population
B- The gene pool of different populations have become very diversified
C-members of different populations can no longer meet successfully
D-small numbers of individual moves and starts in new population
Answer:
The correct answer is - C. members of different populations can no longer meet successfully.
Explanation:
Reproductive isolation is the process that occurs when two or more species or populations are not able to interbreed. The mechanisms or properties that are used to preventing individuals of separate species from mating called Reproductive isolation mechanisms.
The different barriers can cause this reproductive isolation such as different mating seasons. These barriers could be behavioral or temporal or ecological isolations.
A building project caused many small mammals and insects to leave an area. What effect could this have on plant reproduction in that area?
a. less pollination and less seed dispersal
b. more pollination and more seed dispersal
c. more fertilization but less seed dispersal
d. less fertilization and more seed dispersal
the market price of a pendrive is Rs.650. if a discount 10% is allowed, find the selling price of the pendrive
SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT PLEASE ONLY ANSWER IT IF U KNOW THE ANSWER!!!
Answer:
the answer is A
Explanation:
Summer is more or less between June and September, in the graph it is observed that the temperature increases in those months and throughout the year rainfall remains low, it is certain that the answer is A since everything in the graph indicates the veracity of this answer.
5. On the rock shoreline, how was biodiversity affected by the removal of starfish?
Answer:
When the starfish have been removed experimentally, the mussel populations have expanded rapidly and covered the rocky intertidal shores so exclusively that other species cannot establish themselves.
Explanation:
Scientific classification systems have changed throughout time. In the past, the classification of organisms was based mostly on shared physical characteristics. What forms the basis of the modern classification system
Answer:
Modern scientists base their classifications mainly on molecular similarities. They group together organisms that have similar proteins and DNA. Molecular similarities show that organisms are related
Two humans mate who are heterozygous for earlobe shape where attached earlobes (A) are dominant to free earlobes (a), and earwax quality where dry earwax (e) is recessive to wet earwax (E ). What is the probability that their first child will have dry earwax and attached earlobes
Answer:
3/16
Explanation:
This question involves two different genes coding for earlobe shape and earwax quality. The alleles for attached earlobes (A) and wet earwax (E) are dominant over the alleles for free earlobes (a) and dry earwax (e).
According to this question, two humans mate who are heterozygous for both genes i.e. AaEe × AeEe. Each parent will produce the following gametes: AE, Ae, aE, ae.
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
* Attached earlobe, wet earwax (A_E_) = 9/16
* Attached earlobe, dry earwax (A_ee) = 3/16
* Free earlobe, wet earwax (aaE_) = 3/16
* Free earlobe, dry earwax (aaee) = 1/16
Hence, the probability of these parents having their first child with dry earwax (ee) and attached earlobes (A_) i.e. genotype A_ee is 3/16.
A flowering yucca plant and a yucca moth have a relationship. The adult female moth lays eggs in the plant, and the
young moths eat some of the plant seeds when they first hatch. The rest of the seeds are pushed out of the plant by
the young moths, which helps them land in the soil and grow into new plants.
This relationship is best described as ...?
Answer:
Mutualism
Explanation:
To find - A flowering yucca plant and a yucca moth have a relationship. The adult female moth lays eggs in the plant, and the young moths eat some of the plant seeds when they first hatch. The rest of the seeds are pushed out of the plant by the young moths, which helps them land in the soil and grow into new plants. This relationship is best described as ...?
Solution -
The relationship is best described as Mutualism
Because the recently hatched moths are pushing the seeds and helping the yucca plant population to expand.
Answer: Mutualism
Explanation: Hi
The members of the
Kingdom use photosynthesis to create energy.
А
Fungi
B
Bacteria
с
Archaea
D
Plants
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Which of the following is not a contributing factor to environmental policy decisions?
a.
human health
b.
availability of natural resources
c.
environmental health
d.
none of the above
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Organisms are classified as producers or consumers according to the way they *
(1) obtain energy
(2) release wastes
(3) produce offspring
(4) move from place to place
HELP PLEASE
Brainiest if answered
who created the naming system
Answer:
Carl Linnaeus
Explanation:
Carl Linnaeus
Explanation:Answer:
Carl Linnaeus
In truth, Linnaeus adopted their work and is responsible for the formal introduction of the naming system into the scientific world through his 1735 publication Systema Naturae which listed around 10,000 species consisting of 6,000 plants and 4,236 animals.
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What factors influence the survival of Kangaroos in its natural habitat?
Answer:
Kangaroos from desert and semi-arid environments have adapted to drier conditions and have several features that help them deal with the lack of water. Kangaroos need very little water to survive. Kangaroos hop over large distances to find food and water. Hopping is a fast, energy efficient way to travel. Kangaroos need very little water to survive and are capable of going for months without drinking at all. The kangaroo usually rests in the shade during the day and comes out to eat in the late afternoon and night when its much cooler. It eats mostly grass. It needs very little water to survive.
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