Answer:
Placer mining
Explanation:
Placer mining can be less damaging to the environment than surface mines, as the sediment is returned to the water after the minerals have been extracted.
The mining that is likely the least harmful to the environment is the placer mining that is present in Option B, water is used in placer mining to separate mineral particles from soil.
What is placer mining?Placer mining involves the extraction of minerals from riverbeds, streambeds, and other bodies of water, and this method involves the use of water to separate mineral particles from soil, while placer mining is generally considered to be less harmful to the environment compared to surface and subsurface mining, but it can still have negative impacts if not properly managed. For example, the use of mercury in the gold extraction process can lead to water pollution and harm to aquatic life.
Hence, the mining that is likely the least harmful to the environment is the placer mining that is present in Option B.
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Wild diploid wheat has seven chromosomes in its pollen. Discuss the major events that had to occur for tetraploid pasta wheat to have evolved. Describe the genome and fertility of pasta wheat (number and kinds of chromosomes).
Answer:
Tetraploid wheat evolved by allopolyploidization and subsequent diploid-like behavior due to cytological diploidization
Explanation:
Durum wheat (Triticum durum) or pasta wheat, is a tetraploid wheat species that has 28 chromosomes, i.e., seven pairs in each genome (2n = 4x = 28). Durum wheat was domesticated from wild emmer wheat, which originated by hybridization of two diploid wheat species with 14 chromosomes: Triticum monococcum (genome AA) and one wild progenitor (genome BB). Triticum durum is a typical example of evolution by hybridization and polyploidization, where the resultant tetraploid species has two complete sets of chromosomes. Allopolyploidization is one of the most common types of plant speciation. During meiosis, 28 chromosomes form 14 homologous chromosome pairs, because homologous chromosomes have developed 'restriction of pairing' (i.e., cytological diploidization). The restriction of pairing to fully homologous chromosomes ensures a correct meiotic behavior, which otherwise would be altered due to the high level of homology that still exists among chromosomes from different wheat progenitors.
PLZZZZZZZZZZZZZZZZZZZZZZZ HELP ME THIS DUE TODAY!!!
PUT IT IN YOUR OWN WORDS!!!!
1. What is the name of Saturn's moon that we are studying? *
2. What is the name of the NASA space probe that was sent to study Saturn and its moons? *
OWN WORDSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
Answer:
We are studying the moon, Titan.
NASA sent the space probe, Cassini, to study Saturn and it's moons.
Explanation:
Phagocytosis is an example of ?
Callie did a lab during which she investigated the difference in cellular respiration rates between two different types of corn: germinating and non-germinating. A germinating seed is one from which a plant has started to grow. A non-germinating seed is usually dry and a new plant has not yet emerged. The data that she gathered are displayed in the graph. After Callie obtained her original results, she wanted to dig deeper. She determined that the germinating corn seed had utilized 100 molecules of glucose in the first few seconds that she performed the experiment. If these data are accurate, how many carbon dioxide molecules would Callie expect to have been released as a waste during this same amount of time? Explain how you arrived at your answer. The formula for cellular respiration is shown below. C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
This a written question and please keep it at 7th grade level
Answer:
I might be wrong but im guessing 600
Explanation:
Since there is one molecule of glucose used per 6 molecules of carbon dioxide released, if you have 100 molecules of glucose, then you multiply the carbon dioxide by 100 which is 600. Thats what I would say but I might be wrong.
Which list of countries arranged least to most in terms of how much of their income they spent on food
1China Canada Poland Kenya
2Poland China Kenya Canada
3 Canada Kenya Poland China
4 Canada Poland China Kenya
Answer:
is number three
Explanation:
Hard question help me please :I
Answer:
B
Explanation:
I think it's B because the telophase stage of mitosis is when the cell splits into two identical cells.
Answer:
B
Explanation:
Using the Venn Diagram provided, which of these statements could you add to "A?
Answer:
I would say the correct answer is c
Explanation:
The statement that could be added to A is phosphate. The correct option is B.
What is DNA?Deoxyribonucleic acid is a polymer made up of two polynucleotide chains that coil around each other to form a double helix that contains genetic instructions for the development, functioning, growth, and reproduction of all known organisms and viruses. Nucleic acids include DNA and ribonucleic acid.
The fraction of the DNA double helix that supplies structural support to the molecule is known as the phosphate backbone.
The DNA molecule is made up of two strands that wind around each other like a twisted ladder. Each strand has an alternating backbone of sugar (deoxyribose) and phosphate groups.
A nucleotide is made up of a sugar molecule (ribose in RNA or deoxyribose in DNA) linked to a phosphate group and a nitrogen-containing base.
Thus, the correct option is B.
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A study was conducted to understand the factors controlling the rate at
which molecules or ions travel across cell membranes. An artificial
membrane was created that was composed of a phospholipid bilayer only.
The speed at which various substances crossed this membrane was
measured. Some substances can pass through an actual cell membrane
much faster than they passed through the artificial membrane in this study
Which of the following statements best explains this finding?"
a) Actual cell membranes have a much thicker phospholipid bilayer than the artificial
membrane does
b) Actual cell membranes have a variety of proteins embedded in the membrane that are
absent in the artificial membrane
c) Hydrophobic substances spend more time between the two layers of phospholipid in
the artificial membrane than they do between the layers in an actual membrane
d) Hydrophilic substand spend more time attached to the polar region of the
phospholipids in the artificial membrane than they do attached to the polar region of
the phospholipid in an actual membrane
Answer:
b) Actual cell membranes have a variety of proteins embedded in the membrane that are
absent in the artificial membrane
Explanation:
Which property of water allows it to moderate the temperature of nearby areas of land by resisting temperature changes? How is this important for living organisms?
Answer:
land because ask water
Explanation:
As shown in the diagram above, at several locations warm, less dense water cools
T/F Cell theory was developed before the invention of the microscope.
A. True
B. False
Which molecule is a high energy output of photosynthesis
SOMEONE PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
The answer is eukaryotes
Explanation:
This is correct because prokaryotes means NO nucleus And Eukaryotes means yes it does have a nucleus
Pro-No
Eu-Yes
Answer:
Eukaryotes
Explanation:
Please help !!!!!!
I need some to calculate this for me.
Pro Tip 1: To calculate the % of cells at rest (in interphase), divide the number of cells in interphase by the total # of cells in the slide (cells in telophase may look like they are almost 2 cells, but you can still count them as 1).
# of cells in interphase ÷ total cells = % of cells at rest
Pro Tip 2: To calculate the % of cells dividing (or mitotic index), add up the cells in prophase, metaphase, anaphase and telophase. Divide that number by the total # of cells in the slide.
# of cells in PMAT ÷ total cells = % of cells dividing (or mitotic index)
Answer:
INTERPHASE PROPHASE METAPHASE ANAPHASE TELOPHASE % of Cells at Rest (interphase)
% of Cells Dividing (Mitotic Index)
Normal Lung
13 cells 2 cells 2 cells 2 cells 1 cell 65% 35%
Cancerous Lung 6 cells 5 cells 3 cells 3 cells 3 cells 30% 70%
Normal Stomach 10 cells 3 cells 3 cells 3 cells 1 cell 50% 50%
Cancerous Stomach 5 cells 5 cells 4 cells 4 cells 2 cells 25% 75%
Normal Ovary 9 cells 5 cells 3 cells 1 cell 2 cells 45% 55%
Cancerous Ovary 3 cells 6 cells 5 cells 3 cells 3 cells 15% 85%
Explanation:
The answers are also down below in the chart if that helps you better make sense of them.
There are 20 cells in each column, to find the ones at rest we simply take the first number in the column and devide it by the number of cells (in this case 20) once we find the percent of cells at rest, we subtract from 100 to see the cells deviding!
Hope this helps another student along the way! :)
Good luck with your studies and have a fantastic winter break!
Explain how fermentation is useful in the preservation of food products.
Answer: mold is used to make cheese.
Explanation:
mold is used to make dairy products such as yogurt and cheese.
Why is the Earth, moon, and all of the other planets layered?
Planetary scientists are pretty sure that Mercury, Venus and Mars also have these layers. ... Not just planets have a core, mantle and crust. Several moons in our solar system have them! The Moon has a core and mantle similar to Earths but the crust is basaltic rock.
Hope it helps you
Answer:
Planets have different layers because different materials have different densities.
Explanation:
Density comes into play on how heavy matter is at a certain size. The planets formed as dust, gas, asteroids and comets collided together.Around the metal cores, the planets have a mantle and crust made of rock
The memory of facts and experiences that people consciously know and can easily recite is known as
memory
Answer:
also known as EXPLICIT memory, are long term memories relating to specific facts and events that can be verbally stated. ... Memory of facts and experiences that one can consciously know and "declare", Information or knowledge that can be consciously recollected; also called declarative memory.
Explanation:
Economy Question:
Which situation best illustrates globalization's effect on an economy?
A. An Italian fashion company has its clothes made in Taiwan.
B. A Swedish computer company develops a popular new laptop.
C. An Israeli baker sells cakes to local families for many special occasions.
D. A Kenyan construction worker builds a skyscraper in his home city.
Answer:
A. An Italian fashion company has its clothes made in Taiwan
Explanation:
Globalization is when a company starts having influence in other countries. This is bet seen in A. The fashion company is able to sell it's clothes all over the world. But, it's based in Italy. That is already globalization. But, on top of that, to have it made in Taiwan if even more foreign influence.
The situation best illustrates globalization's effect on an economy is An Italian fashion company has its clothes made in Taiwan. The correct option is A.
What is globalization?Globalization means when the economy or trade is happening and connects with the world. The trade that makes the world interconnected, then it is called globalization.
An Italian company when established its fashion company in Taiwan, creates a relationship between these two countries, and increases globalization.
All other options show trading or manufacturing in the local markets, within the states or countries, doesn't match with the term globalization.
Thus, the correct option is A. An Italian fashion company has its clothes made in Taiwan.
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i need help with this
Answer:
c is ox and b it the h20 and a is the plastic cup?
The process of desalination removes salt from seawater using condensation methods or filtration. Which of the following is least likely to be a problem for widespread use of desalination?
A. To be economical, desalination plants must be build on coastlines
B. Desalination uses large amounts of energy
C. There is a shortage of seawater to use for desalination
D. Desalination is relatively slow
What do inner planets and outer planets have in common, and what are some differences?
Answer:
Inner Planets include Mercury, Venus, Earth and Mars,- these are hotter planets.
Outer planets are colder because they are farther from the sun, a lot farther.
Explanation:
They are all planets.
What is an example of behavioral isolation
Answer:
Behavioral isolation is demonstrated in species of finches. Their mating calls are distinct yet unique across species.
Explanation:
Mutations arising from errors within gene replication often accumulate within populations, becoming more stable. They may lead to the formation of separate, genetically distinct populations called species. These new species arise via:
allopatric speciationperipatric speciationparapatric speciationand sympatric speciationBehavioral isolation is an isolating mechanism that is part of sympatric speciation. Here, there are apparent non-physical barriers to prevent mating, and several related species live within a population and gene-flow. However, reproductive isolation occurs through assortative mating (mate choice based on shared traits) which may lead to heteropatric speciation.
Commonly observed in birds, it involves distinct and unique courtship and mating signals. Mates only respond to those fitting the required behavioral patterns such as a courtship dance, nest building, foraging and songs.
Which process creates two daughter cells with identical genetic material?
A. interphase
B. intercellular communication
C. mitosis
D. meiosis
Answer:
c
Explanation:
who cares
Where are the tornado watches and warnings released from?
A) National Weather Service Norman Oklahoma
B) National Hurricane Center, Miami, FL
C) National Weather Service Miami Florida
D) National hurricane center Norman Oklahoma
The tornado watches and warnings released from national Weather Service Norman Oklahoma.
What is National Weather Service Norman Oklahoma?
National Weather Service - Norman, Oklahoma is a Weather Forecast Office of the National Weather Service based in Norman, Oklahoma.
Moreover, it is responsible for forecasts and the dissemination of weather warnings and advisories for central and most of western Oklahoma, and western portions of north Texas.
Therefore, national Weather Service - Norman, Oklahoma (office identification code: OUN) is a Weather Forecast Office (WFO) of the National Weather Service based in Norman, Oklahoma, which is responsible for forecasts and the dissemination of weather warnings and advisories for central and most of western Oklahoma.
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Answer:
A) National Weather Service Norman Oklahoma
Explanation:
I used to live there, plus why would a hurricane service go over that. And tornadoes don't originate in Florida.
What are de clinical sings in equine sinovitis
Which is the overall purpose of the excretory system? extracting energy from food removing wastes from the body moving nutrients through the body gathering information
Answer:
removing wastes from the body
Explanation:
Excretory system is one of the organ systems in our body. The excretory system encompasses all the organs in the body associated with the function of REMOVING WASTES FROM THE BODY, which represents the primary function of the excretory system.
These organs in the excretory system which include; kidney, skin, lungs etc. all functions to remove one waste or the other. For example, the kidney removes URINE, the skin removes SWEAT, the lungs remove C02.
Answer:
removing wastes from the body
Explanation:
edge 2021
Please help it’s urgent!!!!
Answer:
The first answer
Explanation: “add Energy from the form of heat to get a change in the state of matter”
tRNA molecules bring a specific ________________ to the ribosome, according to the ______________. *
2 points
protein, mRNA anti-codon
protein, tRNA codon
amino acid, tRNA anti-codon
amino acid, mRNA codon
Answer:
tRNA molecules bring a specific amino acid to the ribosome, according to the mRNA codon.
Explanation:
In the context of protein synthesis, an mRNA molecule contains the specific codons that encode the amino acids that will be part of the protein. The tRNA is in charge of bringing the amino acids to the ribosome, according to the specific information of the mRNA codons.
The function of tRNA depends on the complementarity that exists between the mRNA codon and the anti-codon tRNA, in such a way that :
The pattern in the amino acid sequence of a protein is indicated by mRNA tRNA has a complementary anticodon, so it will only bring the specific amino acid that the codon encodes.In general terms, each mRNA molecule possesses the genetic code that indicates the amino acid sequence of a protein, and tRNA helps bring those amino acids to the ribosome for synthesis to occur.
How does the structure of bone allow it to function with the immune system? (PLEASE HELP QUICK THEYRE COMING)
Answer:
In addition to providing a structural support for the body and a reservoir for calcium, bone encases the bone marrow, a primary site for hematopoiesis and immune system development.
Explanation:
Due in 1 minute please help
Answer
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