Answer:
B. the Cuyahoga River fire of 1969
Explanation:
i just took the test
Water pollution control came about as a result of the Cuyahoga River fire of 1969.
What do you mean by Water pollution?Water pollution may be defined as the accumulation of undesirable substances in the water which make water harmful to living beings.
During the Cuyahoga River fire of 1969, the number of fire stations along the river doubled due to the fire that caught in the sewage water.
Therefore, water pollution control came about as a result of the Cuyahoga River fire of 1969.
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Can someone help? I don’t understand this at all.
Answer:
1. Ff and Ff and I thinks it's 75%
I think genotypic ratio is 3:4
2. Pp and pp and I think it's 50%
I think genotypic is 2:4
Explanation:
Haven't done this since 7th so I hope it helps
I don't understand the phenotypic ratio though sorry
What is cancer? Explain what a doctor means when he or she says the cancer has “metastasized.” (Provide examples)
Answer:
A disease that causes cells to grow too rapidly
Explanation:
The cancer has spread to another part of the body where there originally wasn't any cancer. Ex: If someone was diagnosed with thyroid cancer and then later they're told the cancer has spread to their lungs
Cancer is characterized by abnormal cell growth when a cell does not divide naturally, it is said to have metastasized, which means that the cancer has spread from one part of the body to another.
What is the significance of the cancer?It is a type of condition where the person's normal cell growth is hampered, and it has a significant impact on an individual, leading to a wide range of symptoms such as pain and fatigue and increasing mental health issues and an example of metastasis is the brain cancer can move to the lungs and other parts. Due to the significant advancements in the diagnosis and treatment of cancer, an earlier stage can be detected and the later stage can be somewhat cured.
Hence, cancer is characterized by abnormal cell growth when a cell does not divide naturally, it is said to have metastasized, which means that the cancer has spread from one part of the body to another.
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Hi, how are you? I hope you are well. Can you answer this question? What does it mean to say that a rock is porous?
The rock has many holes.
The rock has few holes.
The rock has tiny holes.
The rock has big holes.
Water can easily flow through the rock.
Water cannot easily flow through the rock.
what are two limits to cell growth
What is the difference between an independent variable and a dependent variable? How are these different from constants?
The main source of food for Southern Resident killer whales is __.
Salmon
Seal
Dolphin
Shark
PLEASE HELP ASAP
Answer:
=) salmon
Explanation:
The primary cause of these orcas deaths is starvation. The southern residents—which include the J, K, and L-pods—survive mainly on Chinook salmon, another species in decline due to overfishing, hydroelectric projects, and the harbor seals that get to them before they make their way to Puget Sound
Answer:
SALMON
Explanation:
primary cause of these orcas deaths is starvation. The southern residents—which include the J, K, and L-pods—survive mainly on Chinook salmon, another species in decline due to over fishing, hydroelectric projects, and the harbor seals that get to them before they make their way to Puget Sound. (pt.2)
Farmers can store food for when it is difficult to grow. True or false?
Answer:
True
Explanation:
Because my uncle was a farmer.
Answer:
ture
Explanation:
i think hope it is right
How does Meg use the ultimate boon to conquer the power of IT
Answer: She discovers the power of love to fight the darkness of hate
Explanation:
In the book, A Wrinkle in Time, siblings Meg Murray and Charles Wallace along with their friend Calvin O'Keefe embark on a journey to a planet under the control of a dark force known as IT.
When they get there Charles is captured but the rest manage to escape and now Meg has to go back to save her brother. In the process of saving him she discovers that she must use the power of love for her brother to fight and conquer the darkness of hate that the IT possesses. When she does so she is able to free her brother and they escape together.
When the cell divides from from 1 to 2 and 2
to 4 and 4 to 8 and so on, what process is
this?
The process you asked about in your question is called Cell Division
Answer:
Mitosis.
Explanation:
Order the following from largest to smallest:
chromosome
nucleus
nucleotide
DNA-histone complex
gene
cell double-helix
Explanation:
cell double-helix
gene
DNA-histone complex
nucleus
nucleotide
chromosome
Which type of cell has a life span of four days?
colon
skin
brain
heart
The type of cell has a life span of four days colon cell. IECs, which line the surface of the intestinal epithelium, are crucial for food digestion, nutrient absorption, the body's defense against infections from microbes, among other functions
What is colon cell?IECs, which line the surface of the intestinal epithelium, are crucial for food digestion, nutrient absorption, the body's defense against infections from microbes, among other functions. Adenocarcinoma, the most prevalent type of colon cancer, develops in the glands that secrete mucus and is the primary cause of colon cancer diagnoses.In order to regulate mucosal immunity, coordinate food recycling, and create a mucus barrier, the colonic epithelium allows host-microorganism interactions. Inflammatory bowel illness is caused by a breach in the epithelial barrier (IBD).A colon polyp is a little cell cluster that develops on the colon's lining. Colon polyps are usually not harmful. But over time, certain colon polyps can transform into colon cancer, which, if detected in its later stages, can be fatal.
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6. The replication of chromosomes by eukaryotes occurs in a relatively short period of time because
Answer:
because each chromosome contains multiple replicons.
how are unicellular and multicellular organisms different
Answer:
Unicellular organism are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organism use many different cells to function.
Explanation:
In conservation plowing, why are dead weeds and stalks of the previous year's crop left in the ground?
a. to keep the soil from becoming too fertile
b. to reduce the amount of seed needed for the next year's crop
C. to retain moisture and hold the soil in place
d. to keep more organisms out of the soil
Answer:
to retain moisture and hold the soil in place.
Explanation:
this technology of putting dead plants on the soil under the plants and the area nearing the plants is called mulching.it is helpful in reducing the rate of evaporation and also reduces soil erosion.
Conservation plowing is achieved to minimise soil erosion. Thus, option C is correct.
What is soil erosion?Soil erosion is the deterioration of the topmost layer of soil. The top fertile layer of the soil withers leaving the soil infertile.
It is a gradual naturally occurring phenomenon but can be accelerated with human interventions.
There are many factors responsible for soil erosion:
• Deforestation
• Excessive grazing
• Mining
• Construction work
• Drought and floods
Soil erosion negatively affects the crop yield and also clogs the water bodies. This is therefore harmful for the aquatic species. Dry and barren soil is more prone to floods.
Soil erosion should be minimized as it produces a negative impact on the ecosystem.
Soil erosion can be prevented by planting more number of trees. The roots of the trees help in holding the soil in its place.
Therefore, soil erosion should be checked to preserve the soil fertility.
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Eukaryotic cells have membrane bound organelles and DNA contained in a nucleus.
True
False
Answer:
True
Explanation:
Eukaryotic cells DO have membrane-bound organelles and a DNA contained in the nucleus which is different from prokaryotic cells which DO NOT have membrane bound organelles and normally do not have a nucleus.
Hope this helps! Let me know!
How is a scientific law different from a scientific theory?
A.
A theory cannot be disproved but a law can be disproved.
B.
A theory becomes a law after a long period of time has passed.
C.
A theory is why something happens and a law is how something happens.
D.
A theory is used for biology and chemistry and a law is used for physics.
Which component of the blood is part of the body’s immune system?
Answer:
White Blood Cells
Explanation:
role of the two components of the ribosomal complex.
Answer:
The ribosome is a highly complex cellular machine. It is largely made up of specialized RNA known as ribosomal RNA (rRNA) as well as dozens of distinct proteins (the exact number varies slightly between species). The ribosomal proteins and rRNAs are arranged into two distinct ribosomal pieces of different size, known generally as the large and small subunit of the ribosome.
Explanation:
A series of two-point crosses, involving 7 genes (a-g), were carried out, and the following recombination frequencies were obtained. Place the seven genes into linkage groups (where a linkage group is any group of genes that are genetically linked to each other). Within each linkage group, determine the order of genes and the distances between them.
Genes % recombination Genes % recombination
a-b 50 c-d 50
a-c 50 c-e 26
a-d 12 c-f 50
a-e 50 c-g 50
a-f 50 d-e 50
a-g 4 d-f 50
b-c 10 d-g 8
b-d 50 e-f 50
b-e 18 e-g 50
b-f 50 f-g 50
b-g 50
Answer:
Explanation:
Genes with recombination frequencies(RF) of 50 assort independently and are not genetically links together but gene that have less than 50 RF are genetically linked.
The Linked genes included
a-d 12 c-e 26
a-g 4 d-g 8
b-c 10
b-e 18
Starting the order from the most tightly linked to the least
a-g 4, genetic distance is 4cM
d-g 8 genetic distance is 8cM
b-c 10 genetic distance is 10cM
a-d 12 genetic distance is 12cM
b-e 18 genetic distance is 18cM
c-e 26 genetic distance is 26cM
What is technology?
A. A way to apply science to solve problems
B. A type of scientific experiment
C. A political idea
D. A way to convince people
Answer:
a
Explanation:
i think its A because the rest font make sense
Answer: A
Explanation: the application of scientific knowledge for practical purposes, especially in industry
Alma is walking in a park
Answer:
i like walking in a park
Explanation:
A firefly uses chemicals in its body to produce a glowing body. What energy transfer is this?
Answer
Bioluminescence is a chemical reaction. It takes place inside the light-producing organ of a glowing creature. Fireflies, for example, make light in their abdomens. The chemical reaction produces energy in the form of photons.
Hope this helps! <3
Which statement best summarizes the role of households in the flow of
goods?
A. Households supply businesses with raw materials they need to
operate.
B. Households sell products created by businesses to other markets.
C. Households exchange money for products in resource markets.
D. Household expenditures flow to the product market in exchange
for products.
The statement best summarizes the role of households in the flow of goods is households exchange money for products in resource markets. Thus, option C is correct.
Who are the consumers among households?The final consumers of the goods and services produced by the businesses are the households. According to their tastes and preferences, they create demand in the market. The businesses supplied and produced goods in response to customer demand. As a result, a nation's production line is determined by its households.
To run a business, workers are needed, and business owners, managers, and employees also have families. In return for labor, the business pays wages, which increase household income.
Therefore, A company's output may fall somewhere in the middle of these two ideas. A landscaping company, for instance, might offer a homeowner a service and sell them a tree as a product.
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Answer: House Hold expenditures flow.
Explanation: I’m doing the Quiz it 1 answer out of the 2 available examples, sorry if you get the other option it’s the best I can do.
Where does the bloody deposit the
oxygen and nutrients?
Answer:
The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.
Sea Lampreys, a jawless fish that feeds on other aquatic
animals, is considered a pest in the Great Lakes of
Michigan, An ecologist wanted to determine the
percentage of the Lake Trout population was affected by
the lamprey He captured and released hundreds of Lake
Trout making note which ones were being fed upon by the
Lamprey. The ecologist conducted this study over a 6
month period and determined that over half of the Lake
Trout population were affected by the Sea Lampreys.
What is the best Problem for this experiment?
w
Why are Sea Lampreys a problem in the Great Lakes?
What types of fish de the Sea Lampreys feed upon?
How are the Sea Lampreys getting into the Great Lakes?
What percentage of the Lake Trout are affected by the Sea Lamprey?
here it is for the person who commented on mine
Your answer would be Why are Sea Lampreys a problem in the Great Lakes?
In the text, it explains the answer for this question. For the other three questions, it's asking for a factor of the paragraph rather than the whole thing. The whole paragraph explains the answers for all of the questions, so it's best to ask why are they causing problems.
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined and used to determine the actual allele frequencies in the population.
Required:
Is this population in Hardy-Weinberg equilibrium? Calculate the T and t.
Complete question:
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (TT = 0.56; Tt = 0.28; tt = 0.16) and used to determine the actual allele frequencies in the population. Is this population in Hardy-Weinberg equilibrium? Calculate the T and t.
Answer:
No, the population is not in H-W equilibrium
Explanation:
Due to technical problems, you will find the complete explanation in the attached file
Female killer whales stop reproducing in their ____. 50s-60s, 60s-70s, 40s-50s, 30s-40s
Answer:
20
Explanation:
because fasting is missing
Answer:
30s and 40s
Explanation:
it is the right answer i learned that
What Describes the layer directly beneath Earths plates
Answer:
The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth. The mantle is the layer located directly under the sima. ... The mantle is composed of very hot, dense rock.
Explanation:
Answer: This layer would be called the asthenosphere.
Filled-in symbols in the pedigree that follows designate individuals suffering from deafness.a. (2 points) Study the pedigree and explain how deafness is being inherited.b. (2 points) What is the genotype of the individuals in generation V
Answer:
According to the pedigree, It is clear that the F1 generation is not affected but their offspring are affected in F2, which explains that the deafness presented with the pedigree is recessive. It should be an Autosomal recessive inheritance as it is found in both male and female offsprings.
As it is found that the parents are affected in 5th gen and 6th generation but their offspring are not affected which means there must be more than one genes controlled this disorder
B. In 5th generations mentioned above offspring is unaffected but parents are affected, to find the genotype of the individual let assume there are two genes responsible for it A and B, and mutation in any one of them can result in deafness.
So in IV generation Individuals 5 and 6 have genotypeAAbb and aaBB; both are deaf.
gametes:- Ab & aB.
So, the genotype of all offsprings will be AaBb means all are normal.
Deafness is an autosomal recessive disorder as the first generation is unaffected and the genotype of the fifth generation is AaBb.
What are pedigree and genotype?Pedigree is a chart representation of the phenotype of specific genes of the organism and its inheritance from the ancestral family. The pedigree can be used for the analysis of the heritable disease and illness in the family root.
The deafness illness in the pedigree is recessive as the first generation of the pedigree remains unaffected but the later generation is affected and is diseased.
From the chart, deafness can be said to be an autosomal recessive disorder as some generations are unaffected and in some the disease is present. More than one gene is controlling the disease as the fifth and sixth generations are affected but not their offspring.
The parent of the fifth generation are affected but their progenies are normal to know the genotype let's assume the genes A and B to be responsible for the disease and the mutation in any one of the alleles will result in deafness.
Hence, the genotype of the parents 5 and 6 in the fourth generation will be AAbb and aaBB as both of them diseased or deaf, the offsprings produced from their cross will be AaBb that is all the offspring of the fifth generation will be normal and unaffected.
Therefore, the genotype of the fifth generation in the pedigree is AaBb.
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Replicated chromosomes are called
centromeres
homologous chromosomes
karyotype
sister chromatids
Answer:
Sister Chromatids
Explanation:
Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.