The resistance to the pesticide in insects occurred because
A) chance and would not occur again
B) favourable change in DNA of the insects
C) insecticide DDT
D) the food source of the insects
Answers
Answer:
The correct answer is option B. favorable change in DNA of the insect.
Explanation:
At the point when a pesticide is first utilized, a little extent of the pest population may survive to introduction to the material because of their particular hereditary or genetic makeup. These surviving individuals pass along the gene resistance to particular insecticide or pesticide to next generation.
Upon introduction to pesticides, insects that don't have the resistance die eventually, in this manner permitting the insects with the resistance genes to endure and reproduce,creates more resistance insects.
Thus, the correct answer is option B. favorable change in DNA of the insect.
Related Questions
Find the hot spot on the map. This represents one of the volcanoes of Hawaii, which gets its fuel because the island sits over a hot spot. Hot spots occurs at abnormally hot centers known as mantle plumes. Scientific models depict these plumes of molten rock almost like a lava lamp, with a rising bulbous head fed by a long, narrow tail that originates in the mantle. This type of volcanism, hot spot volcanism, is unique. Why?
A The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
B It does not occur at plate boundaries where most all other volcanism occurs.It does not occur at plate boundaries where most all other volcanism occurs.
C It occurs where two tectonic plates converge and is usually the site of mountain building.It occurs where two tectonic plates converge and is usually the site of mountain building.
D The resulting volcanoes always produce islands.
Answers
Answer:
A: The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
Write a description or a reason why you are doing this activities of conserving our natural resources.
1. Using a glass when brushing teeth -
2. Hanging clothes -
3. Walking -
4. Feeding the stray animals -
5. Using back page of paper -
6. Using fan -
7. Watering the plants -
8. Sweeping -
Answers
1. Using a glass when brushing teeth: By using a glass instead of leaving the tap running while brushing our teeth, we can conserve water. Freshwater is a finite resource, and reducing unnecessary water usage is essential for preserving our water supplies and ensuring their availability for both humans and the natural environment.
2. Hanging clothes: Opting to hang clothes to dry instead of using a dryer not only saves energy but also reduces greenhouse gas emissions. Clothes dryers consume a significant amount of electricity, and by utilizing natural methods like hanging clothes, we can contribute to reducing our energy consumption and lowering our carbon footprint.
3. Walking: Walking instead of using vehicles for short-distance travel offers multiple benefits. Firstly, it helps reduce air pollution by decreasing the emission of harmful gases from vehicles. Secondly, walking promotes personal health and well-being, as it is a form of physical exercise. Lastly, choosing to walk reduces traffic congestion and saves fuel.
4. Feeding stray animals: Feeding stray animals is an act of compassion and kindness. By providing food for stray animals, we help prevent their starvation and promote their overall welfare. It also reduces their need to hunt for food in natural habitats, preserving the delicate balance of local ecosystems.
5. Using the back page of paper: Utilizing both sides of a piece of paper helps reduce paper waste and conserves valuable forest resources. Paper production involves cutting down trees, and by maximizing the use of each sheet, we minimize the number of trees required to produce paper products.
6. Using a fan: Using a fan instead of an air conditioner helps reduce energy consumption and lowers greenhouse gas emissions. Air conditioners consume a significant amount of electricity, and by using fans to circulate air and provide cooling, we can contribute to conserving energy resources and mitigating the impact of climate change.
7. Watering the plants: Watering plants is essential for their growth and well-being. By providing them with adequate water, we support their ability to photosynthesize, produce oxygen, and contribute to a healthy ecosystem. Additionally, practicing responsible watering techniques, such as using watering cans instead of hoses, helps conserve water resources.
8. Sweeping: Sweeping instead of using a leaf blower or a hose to clean outdoor spaces reduces energy and water consumption. Leaf blowers and hoses consume significant amounts of electricity and water, respectively. Sweeping not only saves resources but also minimizes noise pollution and prevents soil erosion caused by high-pressure water flow.
Engaging in these activities of conserving natural resources demonstrates our commitment to environmental stewardship and sustainable living. By making conscious choices in our daily lives, we can contribute to the preservation and protection of the Earth's ecosystems for the benefit of current and future generations.
MAKE ME BRAINIST
What happens when an organism genome (genetic code) is incorrectly copied or changed?
Answers
Answer:
When there is a mistake in the copying of the genetic message that is permanent, a mutation has occurred. Two of the bases in DNA (Cytosine and Thymine) are the most vulnerable, and when this happens, they may pair with each other or themselves and the message is changed.
Explanation:
hope this helps you
Which parts of a flower are the male structures and which are the female structures?
Answers
Answer:
The main flower parts are the male part called the stamen and the female part called the pistil. The stamen has two parts: anthers and filaments. The anthers carry the pollen.
Explanation:
Both get something from the relationship. The fungus gets (4..................................) and (5...................................) from its partner as it carries out (6...................................) . The alga or bacterium gets (7. ..................................) and (8. ..................................) from the fungus. It’s a perfect relationship! Together, this pair can grow on (9...................................) , creating (10...................................) where there was none.
what should go on the blank spaces with the following words; sugars, soil, photosynthesis, rock, water, minerals, or oxygen
Answers
The answer is....
4- mom
5- dad
6- sister
7- brother
8- cousin
9- aunt
10- uncles
- grand parents
and yeah
Can someone please help me on this question?
The model below represents water.
~insert picture~
Based on the labels, what is the best description of this model?
A. X and Y represent molecules; Z represents an atom of water
B. X represents a molecule; Y represents a particle; Z represents an atom of water
C. X represents an atom; Y represents a molecule; Z represents a particle of water
D. X and Y represent atoms; Z represents a molecule of water
Answers
Answer: D. X and Y represent atoms; Z represents a molecule of water
Explanation:
Molecule - Group of two or more atoms
Water is H2O meaning two hydrogen atoms bound to an oxygen atom.
Answer:
The answer is D
Chemical weathering: changes rocks on a molecular level uses temperature changes to break rocks is always slower than physical weathering transports silt and rock to other places
Answers
Chemical weathering changes rocks on a molecular level uses temperature changes to break rocks is always slower than physical weathering transports silt and rock to other places - True
Chemical weathering, which can take place at the molecular level, is the disintegration and modification of rocks by chemical processes. Water exposure, exposure to gases in the atmosphere, and acid exposure are all potential causes of this form of weathering. These activities have the potential to alter the composition and structure of the rock over time by dissolving rock minerals.
Chemical weathering can be influenced by temperature variations because certain minerals can expand and contract in response to temperature fluctuations, which can cause cracking and expose new surfaces to chemical reactions. Chemical weathering is often slower than physical weathering, which includes the mechanical degradation of rocks via processes like abrasion or freezing and thawing. The kind of rock and the local climate, among other things, can affect the pace of weathering.
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Complete Question:
Chemical weathering: changes rocks on a molecular level uses temperature changes to break rocks is always slower than physical weathering transports silt and rock to other places - True/False?
Answer: Chemical weathering is a process that alters the composition and properties of rocks by breaking them down on a molecular level.
Explanation: This type of weathering typically occurs through the interaction of water and atmospheric gases with minerals in the rock. The chemical reaction that takes place can dissolve or alter the mineral structure, leading to changes in color, texture, and overall appearance.
Unlike physical weathering, which breaks down through mechanical forces like wind or water erosion, chemical weathering does not require any physical force to take place. However chemical weathering is slower than physical weathering, as the chemical reaction involve often occurs over a longer period of time.
As chemical weathering breaks down rocks, it can also transport silt and small rock particle to other locations, where they may settle and accumulate in new formations. This can contribute to the formation of soil and sedimentary rock over time.
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A substance that cannot be broken down into simpler elements is a?
A) particle
B) carbohydrate
C) element
D) compound
Answers
Answer:
c
Explanation:
Answer:
it is C
Explanation:
i need to make up a living thing that is not in any of the five kingdoms the teacher told us something like a human that did photosynthesis but we cant use that one and im not sure what to do other than that also we need half a page of its characteristics. Please help
Answers
Plssss Help! Will mark brainiest!
How would the moon appear to people on earth when the moon is above the earth and the sun is shining from the left side of the earth?
Answers
I haven’t find the answer yet
When the oxygen in the air combines with the iron exposed by paint peeling off an old
bicycle, a new, red-colored, crumbly substance is formed.
Physical or chemical?
Specific type of physical or chemical
Answers
Answer:
Chemical change
Explanation:
Select the correct answer.
A cell phone manufacturing company wants to display the average sales of their new phone model for a particular month across six countries.
Which method of data representation would be ideal for this?
ОА.
Bar chart
OB.
Ple chart
OCHistogram
Reset
Next
Answers
Answer:
Bar Chart
Explanation:
Is shown to compare amounts, while pie charts are used for percentages
Answer:
The answer is "bar chart" i just did the test so i know this answer is right
Explanation:
Can you please help me
Answers
Answer:
1.Law of Conservation of Mass/Matter
2.coefficients
3. Combustion
4. Activation energy
5. Catalyst
6. New combinations are called compounds
7. Chemical reactions
Explanation:
2. coefficient
3. products
4. reactants
5. oxygen or hydrogen but not sure
6. chemical reaction
7. chemical equation
The theory of evolution has changed over time. Initially, Lamarck believed that organisms developed traits in response to a changing environment to improve their chances of survival. Later Darwin proposed that organisms that already possessed traits suitable to a changing environment were more likely to survive and reproduce.
Which of the following does not explain why the theory of evolution has changed?
A. Lamarck’s theory was discarded when new scientific information became available.
B. Darwin collected empirical evidence to support that organisms with favorable traits survived and reproduced.
C. The theory of evolution became a scientific law after much debate and confirmation in the scientific community.
D. Other scientists such as Peter and Rosemary Grant have collected additional empirical evidence that supports Darwin’s findings.
Answers
I thing is true
draw or define superior and inferior. give and example (anatomy)
Answers
Answer:
Superior (or cranial) describes a position above or higher than another part of the body proper. The orbits are superior. Inferior (or caudal) describes a position below or lower than another part of the body proper; near or toward the tail (in humans, the coccyx, or lowest part of the spinal column).
Hope this helps!!
Explanation:
Answer:
Superior (or cranial) describes a position above or higher than another part of the body proper. The orbits are superior to the oris. Inferior (or caudal) describes a position below or lower than another part of the body proper; near or toward the tail (in humans, the coccyx, or lowest part of the spinal column).
What is the benefit of using a shortcut in a reaction between two chemicals? A shortcut would ensure a safer reaction. A shortcut may provide a faster reaction. A reaction with a shortcut would yield more chemical output. A reaction with a shortcut would require less chemical input.
Answers
Answer:
A shortcut may provide a faster reaction
Explanation:
Chemical reactions occur in a particular manner and speed if allowed to occur normally. However, shortcuts can be used for the essence of making the reaction proceed much faster than it naturally would. Catalysts are the substances used to provide these shortcuts.
A catalyst is a substance that increases the rate at which a chemical reaction occurs without being chemically used up in the reaction. A catalyst speedens up the chemical reaction by decreasing the activation energy. The activation energy is that energy needed for a chemical reaction to kick start. The higher the activation energy, the slower the reaction proceeds.
A catalyst, thus, creates a shortcut by lowering the activation energy of the chemical reaction, allowing it to proceed faster than when a catalyst is not used.
Answer:
B
Explanation:
Edge 2020
18 points
Science Please need help
What is Osmosis, Diffusion in your own words or just a simple definition.
Answers
diffusion,is characterized by the tendency of molecules of a substance to disperse from areas of higher concentration to areas of lower concentration. This tendency is manifested by a corresponding movement of the molecules. This means that the movement of molecules occurs in both directions, at a faster rate from the area of higher concentration.
Diffusion - The movement of molecules from an area of high concentration of the molecules to an area with a lower concentration.
There are several factors that lead to genetic variation in organisms. Which of the following is NOT one of those factors?
A. Producing offspring that are genetically identical to the parents
B. The random combination of alleles from both parents
C. the process of crossing over during meiosis
B. the formation of sperm and egg cells during meiosis
Answers
Answer:
A
Explanation:
Genetic variation means difference in organisms. If they are identical, they are not different, and therefore there is no variation.
Producing offspring that are genetically identical to the parents is the factor that does not lead to genetic variations in organisms. So, it's A.
What do you mean by Genetic variations?Genetic variations may be defined as the existence of dissimilarities in sequences of genes between individual organisms of the same species.
Genetic variation may be induced by the random combination of alleles from both parents, the process of crossing over during meiosis, the formation of sperm and egg cells during meiosis, and many more ways.
Therefore, the correct option for this question is A.
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Why is the water upstream so muddy (undrinkable) but the water downstream is so clear that you can drink?
Answers
Answer:
It is a process call self-purification
Explanation:
The reason muddy water becomes so clear and looks almost drinkable at the end of a stream is because of a process that is called self-purification. This is a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
Which level of organization is more complex than the grouping of tissues into an organ?
A.
cell
B.
atom
C.
organelle
D.
organ system
Answers
Answer:
The answer to this question is D. organ system
Explanation:
Organs. Organs are more complex units than tissues. An organ is an organization of several different kinds of tissues so arranged that together they can perform a special function.
I hope this had helped alot
The level of organization is more complex than the grouping of tissues into an organ is organ system. Thus, option D is correct.
What is organ?Organs are more complex units than tissues. An organ is an organization of several different kinds of tissues so arranged that together they can perform a special function.
There are two parts of nervous system: central nervous system (CNS) and peripheral nervous system (PNS). Nervous system functions to transmit and receive signals to and from the whole body. If the function of the nervous system gets damaged then the certain body part becomes dysfunctional.
PNS consists of the nerves emerging out of the CNS. The PNS is further divided into Autonomic nervous system (ANS) and Somatic nervous system (SNS).
Therefore, The level of organization is more complex than the grouping of tissues into an organ is organ system. Thus, option D is correct.
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Which body systems is the MOST important? Explain why?
Answers
Answer:
While your heart is a vital organ, the brain (and the nervous system that attaches to the brain) make up the most critical organ system in the human body. The human nervous system is responsible for coordinating every movement and action your body makes. More importantly, it controls every function inside the human body as well.
Explanation:
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While savannas and temperate grasslands are both types of
grasslands and share many characteristics, they also have
some differences. Compare them below by writing each
characteristic in the correct location. You will use each only
once.
• home to many types of grazers
• experience all seasons of weather
• home to bison
• home to the African elephant
• example: tallgrass prairies of North America
• example: Serengeti in Tanzania
• also known as tropical grasslands
• few trees due to little rainfall
1)
(Savannas)
(Both Types of
Grasslands)
(Temperate
Grasslands)
Answers
Answer:
S - Savannas are typically found in tropical or subtropical regions.
S - Savannas tend to have more trees and shrubs.
S - Savanna's climate is drier than that of a grassland.
G - Grasslands are found in temperature regions.
G - Temperature Grasslands are mainly devoid of trees, receive less rainfall than Savannas & endure broader temperature extremes.
G - Grasslands make up 25 percent of the Earth's land surface and dominate in regions with limited rainfall, which prevents forest growth. This results from nearby mountain ranges that cause rain shadows over adjacent open-range lands.
B - Both represent the world's richest and most diverse ecosystems. They both provide a home for a quarter of the world's population and a habitat for thousands of plants and animals.
B - Many species gather in vast numbers, graze on the varied grasses, and can be found nowhere else on Earth. The coexistence between wildlife and grasses is key to healthy ecosystems. Animal migrations regenerate the landscapes, by controlling pests, dispersing seeds, and trampling invasive species. Through this partnership, grasslands and savannahs generate vital benefits for both people and nature.
B - Ecosystems such as these two in specific are essential for climate mitigation – they store carbon, locking it deep in the soil and extensive root systems. They are the source of or support many of the world’s biggest rivers and wetlands, ensure food security, support livelihoods, and are embedded in the cultural identity of millions of people.
(Also, A savanna or savannah is a mixed woodland-grassland<---similarity)
Explanation: Just research. I decided to state 3 characteristics for both The Savanna and The Grasslands, and then 3 for "B" (both).
(Both Types of Grasslands) experience all seasons of weather, few trees due to little rainfall
(Temperate Grasslands) home to bison, example: tallgrass prairies of North America
Which of the following is NOT one of the major land biomes? a. tropical rain forest c. temperate grasslands b. temperate savanna d. temperate deciduous forest
Answers
Answer:
Temperate Savanna.
Explanation:
Savanna is not temperate, it is also called tropical grasslands, further supporting my answer. It is PART of the kinds of grasslands, So because it is a part, it is not a major Biome.
Temperate savanna is not the major land biomes.
What is Biomes?Some of the electrons in metallic atoms are held there quite loosely. As a result, they frequently lose electrons and generate cations. In contrast, most nonmetallic atoms have a stronger attraction to electrons than do metallic atoms, and as a result, they gain electrons to form anions.
As a result, when two atoms from a metallic and a nonmetallic element unite, the nonmetallic atoms usually tend to take one or more electrons from the metallic atoms and create ions.
One-third of the Earth is covered in forests, which are primarily made up of trees. A large portion of the terrestrial biodiversity of the planet, including insects, birds, and mammals, is found in forests.
Therefore, Temperate savanna is not the major land biomes.
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Mary and her siblings share similar hair color. Which of these cell components are most involved in determining the hair color of each sibling? *
A. Gene, chromosomes, and nucleus
B. Cytoplasm, chloroplasts, and genes
C. Vacuoles, nucleus, and chromosomes
D. Chromosomes, chloroplasts, and vacuoles
Answers
Answer:
A
Explanation:C and D is automatically eliminated because humans don't have vacuoles (plants do) as well as B because humans don't have chloroplast
The cell components that are most involved in determining the hair color of each sibling is gene, chromosomes, and nucleus. The correct option is A.
What are genes and chromosomes?Genes are small spherical-shaped hereditary material that is present on chromosomes in a bead fashion. They contain the hereditary material of the organism. These are uncountable numbers of genes present in the chromosome.
Chromosomes are x shapes of hereditary material that are preset inside the nucleus. It is made up of DNA, genes, and proteins. Genetic characteristics of the genotype of an organism are unique because of unique genetic material, and this can be transferred to another generation from the first generation.
Therefore, the correct option is A. Gene, chromosomes, and nucleus.
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choose the right answer pls
Answers
Answer:
1.1st one
2.3rd one
Explanation:
thanks
Answer:
1) 1
2) 3
Explanation:
If your body is making new skin cells all the time, why do you sometimes get a scar from a cut?
PLEASE HELP ASAPPPPPP!!!! THXXXX 10 POINTSSS
Answers
Answer:
The process is different. Scarring only occurs to damaged tissue. Scarring is part of the body's natural healing process.
Explanation:
Which of the following is not a type of carbohydrate?
A. Monosaccharide
B. Bisaccharide
C. Disaccharide
D. Polysaccharide
Thanks for helping!
Answers
Answer:
bisaccharide is not a type of carbohydrate
Which of these organisms is not a chordate?
earthworm
snake
sea squirt
human
Answers
hope this helped.
Which three continents contain coal fields that provide evidence for continental drift?
Africa, Antarctica, and North America
Eurasia, Africa, and South America
Antarctica, South America, and Africa
South America, North America, and Eurasia
Answers
Answer:
Eurasia, africa, and south america
While on a road trip, Jason observed the fuel gauge drop from the full tank mark to empty. What most likely happened to the energy from the fuel in the fuel tank?
Lost in the universe
Destroyed during the road trip
Transformed to a different form of energy
Used to increase the overall energy of the system
Answers
Answer: Transformed to a different form of energy
Explanation:
I think this is the correct answer, I'm sorry if it is wrong.
---------
Possible Explanation - In gasoline-powered vehicles, most of the fuel's energy is lost in the engine, primarily as heat. Smaller amounts of energy are lost through engine friction, pumping air into and out of the engine, and combustion inefficiency.