Mosquitoes resistant to DDT are also immune to mosquito net insecticide. A single genetic mutation causes resistance to DDT and pyrethroids according to new research in the diary Genome Biology.
What is DDT and why was it banned?Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in agri company . The United States prohibited the use of DDT in 1972. Some nations outside the United States still use DDT to manage of mosquitoes that laid malaria.
Thus, Mosquitoes resistant to DDT are also resistant to mosquito net insecticide.
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Mosquitoes may have developed resistance to DDT through the process of natural selection. Initially, within a mosquito population, there may have been genetic variation in their response to DDT exposure.
Some mosquitoes may have possessed genetic traits that made them more tolerant to the effects of DDT, while others may have been more susceptible. When DDT was heavily used, the susceptible mosquitoes were killed, while the tolerant ones survived and reproduced. Over time, this led to an increase in the proportion of mosquitoes with the genetic traits for DDT resistance, as they were the ones passing on their genetic information to the next generation. This process of natural selection favored the survival and reproduction of mosquitoes with DDT resistance, resulting in the development of a resistant population.
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why should we study soil what is the inportance of this unit
Answer: Soil filters our water, provides essential nutrients to our forests and crops, and helps regulate the Earth's temperature as well as many of the important greenhouse gases. It is a very important aspect of the world. It can lead to many discoveries about the Earth.
Explanation: The soil is the foundation of basic ecosystem function.
Answer:
Soil is fundamental for a healthy food production. It provides essential nutrients, water, oxygen and support to the roots, all elements that favour the growth and development of plants for food production. Soil is the basis of food systems as well as the place where all plants for food production grow.
100 POINTS TO WHOEVER ANSWER ALL THE QUESTIONS
1. Make field observations supplemented with online or offline research regarding one source of water or air pollution in your region.
2. Assess the severity of the pollution generated and discuss the impacts of the pollutants on human health. If air pollution is involved, identify its possible effects on the ozone layer, acid rain, or greenhouse gas emissions.
3. Explain if the source of pollution is point or non-point.
4. Identify pollution control measures. Speculate on ways that the pollution could be further reduced
Answer:
Are these true or false questions or-?
Explanation:
I can answer in comments if they are..
In the photos there is part A and B I didn't know what to wright for part C
For part D this is what I put
( When High Particle Levels are Expected, Take these Extra steps to Reduce Pollution:
Reduce the number of trips you take in your car.
Reduce or eliminate fireplace and wood save use.
Avoid burning leaves, trash, and other materials.
Avoid using gas-powered lawn and garden equipment. )
Also there is a part E you press the 1 photo thing it's by the Equation Editor you then have to press my device go to a new tab look up source pollution btw and jus drag that image from that tab to your schooling tab and place it in the box it will automatically go in the box and into you answer part. idrk but that's what I know
you're welcome!
An organic disorder whose symptoms tend to develop gradually and worsen over time is __________. a. bulimia b. anorexia c. delirium d. dementia
An organic disorder whose symptoms tend to develop gradually and worsen over time is dementia.That is option D.
What is organic disorder?An organic disorder is a mental disturbance that can affect the brain cells as well as causes hormonal abnormalities.
Examples of organic disorders are:
dementia, deliriumAlzheimer's disease, andamnesia.Dementia is an organic disorder that causes an impaired ability to remember, think, or make decisions that interferes with doing everyday activities. This is a long term organic disorder unlike delirium which is short term.
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Which of these are functions of the ear? (Select all that apply)
hearing
emitting sound waves
balance
receiving light energy
Answer:
hearing
Explanation:
you use your ear to heare
Answer:
emitting sound waves and hearing
Explanation:
During an activity, students were given cards with different types of cells, tissues,
organs, and organ systems printed on them. Their task was to sort the cards into
labeled boxes, as depicted here, to show where they belong in the organization of
living things. Into which box or boxes could the card be placed that is labeled with
the term "Blood"?
A) Cells
B) Cells and Tissues
C) Tissues
D) Tissues and Organs
Blood is composed of a group of cells and therefore is classified as a tissue.
What is the organization of life?Organization of life is the organization of life into different levels based on complexity and function.
The levels of organization of life are:
cellstissuesorganssystemsCells are the basic unit of life.
A group of cells performing related functions together as a unit are known as tissues.
Blood is composed of a group of cells. Thus, blood is a tissue.
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The process of photosynthesis resulted in (as in when photosynthesis first appeared on Earth)...
A. significant changes in the atmosphere.
B. extinction.
C. The evolution of multi-cellular life.
D. all of the above.
What are some intrinsic characteristics of endangered species that makes it difficult for them to rebound in a changed environment
The charactistics that make it difficult for endangered species to rebound include;
The habitat is significantly changedOver exploitation of the speciesPollution that threatens the existence of the speciesWhat are endangered species?Endangered species are those species that are facing the threat of extinction sometimes owing to severe habitat loss or some other factors.
We must note that these characteristics that make it difficult for endangered species to rebound;
The habitat is significantly changedOver exploitation of the speciesPollution that threatens the existence of the speciesLearn more about endangered species: https://brainly.com/question/12446045
why do brain cells do brain things
They are building blocks of your brain, and transmit information to other neurons, muscles, and tissues throughout the body. They allow you to think, feel, move, and comprehend the world around you.
hope it helps...!!
Describe the process that maintained a stable tasmanian devil population size before the appearance of dftd in 1996.
The Tasmanian devil population size before the appearance of dftd in 1996 was stabilized by genetic variation and gene flow.
What is Tasmanian devil population?The Tasmanian devil population is the world's largest marsupials. They were of brown color and with a size of a bear baby.
They have very sharp teeth and muscular and strong jaws, that makes it an animal with the most powerful bites in mammals.
These animals are currently in endangered, their population reduce due to shortage of food.
Thus, the Tasmanian devil population size before the appearance of dftd in 1996 was stabilized by genetic variation and gene flow.
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WHAT problem was the electric toothbrush supposed to solve?
Answer:
Brushing too hard can erode the enamel on your teeth and cause gum recession. Many electric toothbrushes can solve this problem, too. They have pressure sensors that warn you if you're pressing too hard. That way, you can develop a proper touch that will remove plaque, but not damage your teeth and gums.
Explanation:
Electric toothbrush bristles vibrate or rotate to help you remove plaque buildup from your teeth and gums. The vibration allows for more micro-movements every time you move your toothbrush across your teeth
What causes scientist to disagree
Answer:
Unreasonable explanations and blurry proof. Also if the person who made a theroy for example, and they are brand new, and they didn't use much resources and had a thought.
Explanation:
Scientests disagree about several things. Thus they conduct expirements, if it fails, they disagree. If it suceeds they agree.
What method would a scientist use to learn about the number of individuals of a field of strawberry plants?
Answer:
i'm not sure of this but i think it is the scientific method?
Explanation:
the scientific method is to study the outside world with observation and to do multiple different tests to get accuracy
If you laboratory practical exam is asking you to identify an organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle, you can be sure the organism is a
Euglena is the organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle.
What is Euglena?Euglena is a microorganism that belongs to the eukaryotes. The possess the following characteristics:
Euglena lacks a cell wall but the cell is surrounded by proteinaceous strips. It has a pellicle made up of a protein layer supported by a substructure of microtubules.Therefore, Euglena is the organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle.
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what are the negative effects of eating unhealthy food?
Answer:
Unhealthy food can affect the human body.
Explanation:
Eating unhealthy foods on a regular basis may contribute to health problems. Studies continue to show the negative effects of many common unhealthy food products. For optimal health and wellness, eat a balanced diet with plenty of fruits, vegetables, and whole grains -- and save the empty calories for occasional treats.
Water absorbed through the GI tract is referred to as ______ water. Multiple choice question. obligatory preformed metabolic respiratory
Water that is absorbed by the Gastrointestinal tract is called nutrient which is absorbed by small intestine after it has been breakdown.
What is GIT?The gastrointestinal tract refer to the passageway of the digestive system or organs of the digestive system that begin from the mouth to the anus. The GI tract comprises of organs of the digestive system and they include esophagus, stomach, and intestines. The GIT help in digestion and absorption of nutrient.
Therefore, Water that is absorbed by the Gastrointestinal tract is called nutrient which is absorbed by small intestine after it has been breakdown.
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Which of the following is an example of mechanical control of nonnative species? a. pesticides b. herbicides c. net barriers d. inspections please select the best answer from the choices provided a b c d
Answer:
The answer is c. net barriers.
Non-native species can do a great harm to native species or ecosystem and there are many ways to control them. Net barriers are mechanical control. Pesticides and herbicides are chemical control. There are also natural (biological control) control, such as diseases and pests, and environmental control, by altering the environment.
Water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a(n) __________ in tubular fluid volume that is __________ to plasma.
Water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
What do you mean by Proximal tubule?A Proximal tubule may be defined as the portion of the nephron that lies in between Bowman's capsule and the loop of Henle.
The major function of the proximal tubule is to reabsorption of sugar, sodium, chloride ions, and water from the glomerular filtrate. It decreases the volume of tubular fluid.
Therefore, water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
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Which is true of genes?
They are sections of DNAthat produce the proteins that control an organism's characteristics.
They are proteins that produce sections of DNAwhich control the cell's activities.
They are features that can be observed rather than measured.
They are the same as traits which show up in an organism if they are dominant.
Answer:
A. Sections of DNA that produce proteins that control an organism's characteristics
Explanation:
The other cells need these proteins in order to have a job, but they need to start from genes. Besides human traits, other organelles' dependence on them makes it vital to the life of a cell.
Answer:
Sections of DNA that produce proteins that control an organism's characteristics
Explanation:
What are a type of filament system in eukaryotes that form non-polar paired filaments and bind GTP?
When is the BEST time to address stressful situations that can easily turn to anger?
When you are rested, focused, and prepared to handle them
When you are too tired and distracted to be angry
When others involved are ready to address the problem
As soon as the stressful situation arises
John rides his bike 2.3 km to school. After school, he rides an additional 1.4 km to the mall in the opposite direction. What is
his total distance traveled?
2.3 km to school.
1.4 km to the mall.
to find:total distance traveled by John.
solution:to find the total distance traveled just find the sum.
2.3 + 1.4
= 3.7 km
therefore, the total distance covered by John is 3.7 km.
The constant diameter of the double helix is ensured because hydrogen bonding is always between a base (A and G) and a base (T and C).
A. True
B. False
which of the following statements describes ann natural selection acting on a population
What is the process which nitrogen is brought into organic molecules called?.
Answer:
i think nitrogen fixing
Explanation:
THATS ALL I KNOW
The ________ both transports urine outside the body during urination and transports semen to the female reproductive tract during intercourse.
Answer:
Urethra
Explanation:
Answer:
The ________ both transports urine outside the body during urination and transports semen to the female reproductive tract during intercourse.
Explanation:
Urethra
1. Do you think that parents should be able to use science to determine whether or not an unborn child will have a genetic disorder?
2. Is this taking science too far?
3. Should taxpayer dollars be used to do additional research into detecting genetic diseases that could be determined before birth?
Answer:
All of these are personal opinion so I would personally suggest learning about these on your own as well as here.
The natural differences between individuals of a species are referred to as:.
Answer:
it is referred to as genetic variation
name two minerals elements that are necessary in the synthesis of chlorophyll
Answer:
Iron and Magnesium are the elements
Different proteins affect different traits.
True
False
Answer:
True
Explanation:
It is true because our protein has a big effect on our traits.
I hope it helps! Have a great day!
Pan~
What muscle covers the ventral, abdominal region in rats?
Answer:
the external oblique.
Explanation:
the external oblique covers the ventral, abdominal region in rats.