A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations BEST describes this observation?
a. The herbicide company lost its formula and started selling poor-quality herbicide.
b. Natural selection caused pigweed to mutate, creating a new triazine-resistant species
c. Triazine-resistant pigweed is more efficient at photosynthesis.
d. More triazine-resistant individuals survived each year, soi more individuals were triazine-resistant.
e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring
Answer:
e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring
Explanation:
The term resistance in the exposed example refers to an inheritable change in the weed population sensitivity, which is reflected in the consecutive failure of the chemical effects on the herb population.
Herbicide might produce a genetic modification in the weed, leading individuals to survive under the effects of the chemical. The plants evolve with the capability of tolerating the chemical dose that is usually used to destroy a normal population of plagues.
Resistance to the toxic is associated with mutations in some of the genes.
A mutation is a change in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
The selective pressure or modeling environmental factor is the triazine herbicide The weed´s response to herbicide is the survival of only those that carry mutations. Natural selection benefits these mutations. The mutated herbs survive, become more resistant, and pass the mutation to their offspring.I need help with that
Answer:a
Explanation:
Explain how temperature is important in ecosystems and the rationale for your choice in this section. Write down relevant notes regarding you design.
Temperature really can control our days. And what we can or able to do that day. For example, it's raining and it is super windy, and you wanted to go somewhere, in this case lets say the beach. It wouldn't be such a good idea.
Part B Which shape of molecules do scientists think may be important for the development of life and why?
Answer:
Molecular shape (the shape that a single molecule has) is important in determining how the molecule interacts and reacts with other molecules. The Molecular shape also influences the boiling point and melting point of molecules. If all molecules were linear then life as we know it would not exist.
Answer:
Scientists think that branched molecules may be important for the development of life. That’s because amino acids have branched molecules, and they are the building blocks of proteins
Explanation:
plato
help will brainlist thx
Answer:
1.Food webs consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems.
2. If the grasshopper decreased the birds and owls would not have have enough food and therefor the population of birds and owls will also decreases.when Foxes eat the birds if there are are less number of birds it will affect the population of the foxes to decreases.
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Which of the following is TRUE about the movement of earth's plates?
A. They do not move because they sit on a layer of solid rock
B. They move along with the layer of slightly softened rock below them
C. They move by floating on a layer of completely melted rock below them
D. They do not move until the solid rock layer beneath them temporarily melts and moves
Answer:
c
Explanation:
the tectonic plates or the crust of the earth sit on molten rock moving across the planet with causes the plates to move causing things like earthquakes and volcanos
Movement of Earth's plate can be due to many reasons and can cause many disasters. They move along with the layer of slightly softened rock below them
What is the 3 causes of this movement?Earth's plates move due to the intense heat in the Earth's core. This causes the movement of soften rock in the mantle layer.
It moves in a convection cell pattern that forms by rising of warm, cooling and then sinking down of material.
The Earth's plates move by floating on a layer of completely melted rock below them.
Thus, the correct option is B.
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Mendel drew several key conclusions based on his observations of pea
plants. Which of the following best describes one of his conclusions?
A. A parent can pass on only one factor for each trait to its offspring.
B. An offspring that inherits different versions of the factor for a trait
will not survive.
C. Hereditary factors blend together to produce the traits of
offspring
D. Dominant hereditary factors are those that help an individual
survive and reproduce.
The best statement that describes the conclusion of the given scenario, is that parent can pass on only one factor for each trait to its offspring. The correct option is A.
What is Mendel law?Gregor Mendel proposed the law of inheritance after seven years of research on pea plants.
Mendel's inheritance laws encompass the laws of dominance, segregation, and independent assortment.
In this, the parent can pass on only one factor for each trait to its future offspring.
Thus, the correct option is A.
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When you have diabetes what is the main body system that is being affected? How does it affect other systems?
Answer:
the main body system is circulatory system?
Answer:
The Circulatory System (Read explanation)
Explanation:
Diabetes affects many of the body's major organs, such as the kidneys, eyes, blood vessels, and heart. Kidney Damage The kidneys filter out your body's waste products. In diabetics, high levels of blood sugar force the kidneys to try to filter large quantities of blood.
It affects other systems because kidneys are technically part of the urinary system and if you have diabetes, it will indeed affect the urinary system. It is all linked together and the domino effect will collapse.
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This is the question I need help with.
Answer: Brown beetle
Explanation:
It's brown so it blends in with the ground better.
Answer:the answer would be D
Explanation: the brown beetle is SUPPOST to be the tan colored beetle and the the ENVIORNMENT they are asking for is the new desert, in which case the brown beetle (or tan beetle) will have better adapted to the new envionrment (the New desert)
A dependent variable is:
A. Changed to test a hypothesis.
B. Measured to show the effect of a change.
C. Kep the same to make an experiment a fair test.
C
D. Collected to draw conclusions.
Answer:
B. Measured to show the effect of a change.
Answer:
B
Explanation:
Measured to show the effect of a change
Which type of bond forms between water molecules?
Answer:
Hydrogen Bonds
Explanation:
✦ ✦ ✦ Beep Boop - Blu Bot! At Your Service! Scanning Question . . .
Code: Green! Letters and Variables Received! ✦ ✦ ✦
--------------------------------------------------------------------------------------------------------------Question: Which type of bond forms between water molecules?
--------------------------------------------------------------------------------------------------------------Answer: Water is polar, and the dipole bond it forms is a hydrogen bond based on the two hydrogen atoms in the molecule. Hydrogen bonds are especially strong because the hydrogen atom in molecules such as water is a small, naked proton with no inner electron shell.
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True or false
Transpiration pull will be stronger on a hot, humid day more than on a hot
dry day.
What happens if the first line of defence is breached?
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what happens if the first line of defence is breached?
Damage to the skin, such as burns or cuts, very quickly leads to complications and infections that before modern-day antibiotics could easily prove fatal. Once the outer line of defence is breached, the body very quickly starts up its first major attack on the invading substances.
Solve for the percentage of Feed B to be used in the ration?
Answer:
b
Explanation:
i used the formula to eliminate c, a, and d
Which of the following best explains what may be happening in the
other structures in the video based on what you know from the
article.
Answer:
Different types of liquids from the fractioning tower are moved to different structures to be further prepared for use.
Explanation:
E2020
Containers of ice cream are sold by volume, not by weight. Some ice cream manufacturers pump air into the ice cream before packaging it. Why does this practice make the ice cream more expensive to the consumer?
what do you mean by the chromatin fibres ?
Hey buddy I am here to help!
Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.
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Sodium metal reacts whit hydrochloric acid to produce salt and hydrogen gas. What are the reactants in this chemical reaction
Answer:
Na (sodium) and HCl (hydrochloric acid)
Explanation:
The products are the salt and hydrogen gas
Whenever you see the word react it means those are the reactants (usually whatever compound comes before and after the word). Because they are reacting with each other.
Whenever they say "is produced" those are the products
Take a look at the two boxes below. Each box has the same volume. If each ball has the same mass, which box 1 or 2 would weigh more? Why?
Answer:
Box 1.
Explanation:
The box 1 have the more mass because there are more number of balls present in the box while on the other hand, box 2 has less number of balls in the box. The volume of box boxes are the same as well as weight of the both boxes before placing of balls in it. Placing of balls changes the weight of both boxes because of the presence of different number of balls in each boxes that increases its weight.
In chickens, FF produces extreme frizzle (very brittle and curly feathers), Ff has mild frizzle and ff has normal feathers. An extreme frizzle hen is mated with a normal rooster. What will the chickens look like? What will their genotype be?
Cross (parents):
Offspring will look like:
All of the genotypes will be
Answer:
if pure FF and pure ff marry, phenotypic ratio is all Ff or half-half
mild-ruffled feathers for all the chicks
Explanation:
makes sense
This summer, you are returning to the research station in Costa Rica to follow up on the population of butterflies you have been studying. You are disappointed to find that there are fewer this year than last. In fact, at dinner your friends studying frogs and birds are complaining about the same thing. What type of influence do you suspect
Answer:
it is likely that there was an environmental disturbance that affected the population density of the species.
Explanation:
All animals have their survival and reproduction capacity directly linked to environmental quality. This is because these animals take from the environment all the resources needed to live and develop. In this case, when the environment is balanced and has the necessary resources for life, animals can survive longer and develop well, being able to reproduce, generating more animals that increase the population density of their species. However, when this environment is disturbed, the animals' survival is threatened, even failing to reproduce. This lowers population density.
In the case presented in the question above, it is likely that populations of butterflies, frogs and birds are decreasing due to environmental disturbances.
help me to do this please please
Answer:
HELP MEE TOOOOOOO
Explanation:
what is structure g called?
Why is a female skeleton smaller, and not as wide a male skeleton?
Can someone please explain?
Answer:
A male's skeleton is usually thicker, rougher and appears more bumpy. ○ Due to the fact that males have larger muscles and therefore their skeletons require stronger attachment sites. Women who have borne children have scars on the surface of their pelvis. The femur (thigh bone) of a male is thicker than a females.
What was the purpose of Hardy and Weinberg´s work?
A) To learn where genetic information is stored
B) To count the total number of alleles in the world
C) To learn how to control the mating of organisms
D) To determine how allele frequency changes
Answer:
Is D
Explanation:
check picture so match the answer
Los gatos tienen muchas opciones para comer como ratones, peces, cucarachas, etc. Por ejemplo: Planta -> Ave -> Gato -> ??? ¡¿Quién mata al gato para comérselo?! POR FAVOR ESPARA UN PROYECTO DEL ORIGEN DEL GATO
Answer:
Pumas, lobos y coyotes, águilas, serpientes, halcones, búhos y perros.
Explicación:
Pumas, lobos y coyotes, águilas, serpientes, halcones, búhos y perros son los animales que matan al gato y se alimentan de ellos. Estos organismos son los depredadores de los gatos y dependen del gato y de algunas otras especies para cumplir con su requerimiento de alimento. Algunos animales matan directamente al gato a través de sus dientes fuertes, mientras que otros matan al gato a través del veneno que está presente en su boca.
Differences in the DNA between two individuals is known as?
A. Snips
B Cuts
C. Crisps
D. Trips
Answer:
A
Explanation:
Snips is also called polymorphism in Dna which means difference in genetic among a population..
Why are data tables useful in an experiment?
[tex]\textsf{QUESTION:-}[/tex]
[tex]\textsl{Why are data tables useful in an experiment?}[/tex]
[tex]\hookrightarrow[/tex] [tex]\textsf{ANSWER:-}[/tex]
Data tables aid in the organization of information. Saving data from an experiment or scientific research in a data table will make it easier to look up later. Data tables may also aid in the creation of graphs and other charts based on your data.
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[tex]\textbf{HOPE IT HELPS}[/tex]
[tex]\textbf{HAVE A GREAT DAY!!}[/tex]
A force of 10,000 N is applied to a wall that does not move. How much work is performed?
Answer:
W= F×d
F = 10,000 N
d = 0 m ----> W= 10,000 × 0 = 0 j
