Natural selection causes evolution. The correct option is B.
What is natural selection?Natural selection refers to the process that leads to the adaptation of organisms to their environment.
Natural selection forces either select for or against traits. Traits that aid organisms in adapting are selected for, while those that do not aid in adaptation are selected against.
Traits that are selected for are allowed to perpetuate in the population while those that are selected against gradually fade from the population.
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2. describe three situations in which ionic reactions go to completion.
The three situations in which ionic reactions go to completion is formation of a gas, a precipitate and a slightly ionized product.
What are ionic reactions?It indicates the flow of electrons and, therefore, the bonds broken and formed in the course of the reaction. It is theoretical, it can be corroborated by experiments, but sometimes there is no consensus on the mechanism by which a certain reaction occurs.
Chemical reactions are the result of the transformation that occurs in substances, where atoms rearrange themselves, modifying their initial state. Thus, chemical compounds undergo changes generating new molecules. In turn, the atoms of the elements remain unchanged.
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Select the correct answer. alternators are installed on automobiles to power things like the lights and the radio. which kind of device is an alternator? a. generator b. motor c. battery d. wind turbine e. electric fan
The kind of device in which an alternator can be categorized is a generator of electric energy.
What is an alternator?An alternator is a tool/device in a car that converts mechanical energy into electrical energy.
The electrical energy generated by using an alternator is alternate electrical energy.
In conclusion, the kind of device in which an alternator can be categorized is a generator of electric energy.
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Answer: Generator
Explanation:
Drag each characteristic to the correct category.
viruses do not possess all the characteristics of life. identify those characteristics that viruses display and those they don't display.
made up of one or more cells
has a defined boundary
uses energy
exhibits growth and development
possesses internal organization
eliminates waste
characteristics of life
present in viruses
characteristics of life absent
in viruses
Viruses are organisms that share traits with both living and non-living organisms. The virus' genetic material is made up of both DNA and RNA.
What are the characteristics of virus?Viruses have an exterior capsule layer and a specified boundary. Only the host cells provide energy to the virus. They thrive and mature, multiplying their numbers solely within the host cells.
Characteristics which virus do not display:A virus is a single-celled with no more than one cell. In the virus, there is no internal organization. If a virus is present outside of the host environment, it does not grow, develop, or require energy. Viruses do not remove trash.
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As the pond gets older, the number of plants increases. When they die,
they fall to the bottom of the pond, rot, and become mud. After a very
long time, what do you think will happen to the pond?
A.There will be more water
B.There will be less water
C.There amount of water will stay the same
Obviously C
The water would stay the same the rotten plants would sink and eventually disappear, the water will not increase or decrease
Q)Bacteria can be used to make human proteins.
Which statement explains why this is possible when a human gene is placed in a bacterial cell?
A) Bacteria are able to reproduce rapidly.
B) Bacteria are very small organisms.
C)
Bacteria contain genetic material in plasmids.
D)
Bacteria have the same genetic code as humans.
isnt the answer C?
Answer:
B. Bacteria are very small organisms.
An enzyme and four different molecules are
shown in the diagram below.
Enzyme
The enzyme would
most likely affect
reactions involving
a
A
B C D
Molecules
A molecule A, only
B molecule C, only
C molecules B and D
D molecules A and C
The question is incomplete but I attached the diagram here and it is likely that the enzyme affects reactions involving molecule C.
What is a chemical reaction?A chemical reaction is a process where molecules called reactants are converted into products.
An enzyme is a biological catalyst that shows specificity on one reactant, whereas molecules can be either reactants or products.
Enzymes are proteins that act as biological catalysts by speeding up the velocity of a chemical reaction.
In conclusion, the question is incomplete, but I attached the diagram and it is likely that the enzyme affects reactions involving molecule C..
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During lunch each day, Alex and Hailey have been noticing the trashcans around the lunchroom are filling rather quickly with cans and bottles. They decide a recycling program would be beneficial for their school and the environment, so they brainstorm ways to get the program started. Before discussing their idea with the principal, they need to decide which of their plans would best solve the problem. Which of their ideas would best solve the problem with the least amount of inconvenience (disturbance) for everyone involved?
options:
A. Place plastic and metal recycling bins next to each lunchroom trash can.
B. Remove all vending machines that sell plastic bottles or aluminum cans.
C. Get a petition started to build a recycling center close to the school.
D. Ask volunteers to separate recyclable materials from the trash.
the periodic table contains a lot of information in it. with the help of that information calculate the number of neutrons present in non-metallic elements of the periodic table.
Answer:
No. of neutrons = mass no. - atomic no.
Explanation:
I hope it helps u dear! ^_^
identify a process that could cause a new pesticide resistant gene to appear in a mosquito population (short written response)
What are the three main phases of the cell cycle?
Answer: The cell cycle is composed of 3 main stages - interphase, mitosis and cytokinesis.
Explanation:
A scientist wants to test if soaking berries in hot water will prevent them from getting moldy. What is the independent variable? What is the dependent variable?
WILL GIVE BRAINLIEST
Hot water is independent variable whereas berries are dependent variable.
What is the independent variable and dependent variable?The independent variable is hot water whereas the dependent variable is berries because berries shape depends on the hot water but the hot water can't be affected by the berries.
So we can conclude that hot water is independent variable whereas berries are dependent variable.
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What are effects of deforestation on biodiversity
Answer:
Deforestation can directly lead to biodiversity loss when animal species that live in the trees no longer have their habitat, cannot relocate, and therefore become extinct. Deforestation can lead certain tree species to permanently disappear, which affects biodiversity of plant species in an environment.
A cross was performed, and the offspring shown
to the right were produced. What is the most likely
genotype for the parents?
OBbee x bbEE
OBbEEx Bbee
OBbEex BbEe
BBEE x bbee
DONE
10 mice with
black fur, black eyes
3 mice with
white fur, black eyes
2 mice with
black fur, red eyes
1 mouse with
white fur, red eyes
Answer: da
Explanation:
Answer:
c
Explanation:
Name three signs that the climate changing
Explanation:
The three signs that the climate changing are :---
•Higher Temperatures.
•More Droughts.
•Wilder Weather.
Which of the following is a true statement?
A. Light energy causes water molecules to split up.
B. Light energy bonds the carbon and oxygen together to make carbon dioxide.
C. Light energy creates water molecules.
D. None of the above
Answer:
A is the answer make me Brainlist
Plase help and thanks.
Sustainability can be achieved through careful resource management. please select the best answer from the choices provided t f
It is a a true statement that; Sustainability can be achieved through careful resource management.
What is sustainability?The term sustainability has to do with the ability to utilize resources in a way that they are not quickly depleted or degrade the environment. Sustainability is the reason behind all environmental conservation efforts of governments around the world.
It is a a true statement that; Sustainability can be achieved through careful resource management.
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Answer:
It is True.
Explanation:
Models are important in science. Some models are verbal models, which are full elaborate descriptions that can help someone visualize the concept. You have seen various visuals of Earths layers. Create a verbal model of
Earth
s interior. In your model, describe the following:
1. The main layers of Earths interior and the indirect evidence that helped us determine the layers.
2. The flow of matter in the mantle and in the core and the effects of that flow.
3. The source of thermal energy and how energy flows throughout the layers. (Hint: think of the cause of the convection currents)
The main layers of Earths interior are the inner core, the outer core, the mantle and the crust.
What is the indirect evidence that helped us determine the layers?Use of seismic waves is the indirect evidence that helped us determine the layers. When earthquakes occur they produce seismic waves.
The flow of matter occurs by convection. The dense crust subducts back into the mantle exert forces on crustal plates that then move, producing tectonic activity.
So we can conclude that The main layers of Earths interior are the inner core, the outer core, the mantle and the crust.
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In a population of birds, the color of their feathers is controlled by an incompletely dominant gene. Homozygotes of one type are sky blue, homozygotes of the other type are mauve, and heterozygotes are cobalt colored. Population 1 contains 10,000 birds and 6,400 of those 10,000 are sky blue. Population 2 contains 10,000 birds and 900 of those 10,000 are sky blue. Both populations are under Hardy-Weinberg Equilibrium. Determine the HWE frequencies of each color in each population separately.
Answer:
if it contains 10000 than it must be 100373282
Explanation:
I need help with this
Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal
because it has always been observed to be true?
O theory
O probability
Olaw
Ohypothesis
I think it's theory
Please give brainliest
A scientific law is a factual claim that is commonly acknowledged to be true or universal because it has consistently been seen to be true.
Thus, Only a law among the alternatives is acknowledged as being universal.
After several years of experiments, a finding is recognized as a law. It must demonstrate its universality in order to be regarded as such at any time and in any location on Earth.
A theory is merely the best explanation for a fact, and it can be abandoned when a better one emerges. As a result, it is impossible to predict how long a theory will last.
Thus, A scientific law is a factual claim that is commonly acknowledged to be true or universal because it has consistently been seen to be true.
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In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people—those who exercise every day for an hour and those who don’t exercise at all. In this case, the statement that people who exercise for an hour may have lower cholesterol levels is
. To test this statement, the scientist would measure cholesterol levels in exercisers and non-exercisers. The cholesterol levels would be
The exercise reduces the levels of the low-density lipoproteins or the bad cholesterol. It is found that, the people, who exercise daily have a low level of low-density lipoproteins, and an increased level of high-density lipoprotein, which is also known as good cholesterol.
What is Scientific hypotheses?Scientific hypotheses, in general, are the premises within a given theory, which can be validated on the basis of a scientific method, contributing to the formulation of new hypotheses. In this experiment the theory says that cholesterol levels between people who exercise and people who do not exercise is different. Within this theory, the statement says that people who exercise for an hour may have lower cholesterol levels, is a hypothesis that will be confirmed or refuted after the experiment.
The dependent variable is summarized in the phenomena or factors explained or identified, because they are influenced or determined by the independent variable. In this experiment the independent variable is the performance (or not) of exercises. Exercise is what influences or determines cholesterol levels in this study. Thus, cholesterol levels are a dependent variable.
Hence, to check whether a person exercises regularly or not, the scientist can determine the cholesterol level.
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Most bacterial infections are treated with antibiotics that is commonly available at public hospitals.
TRUE OR FALSE?
PLEASE STATE WHETHER THE STATEMENT ABOVE IS TRUE OR NOT, TY.
Answer:
The statement is true
A student mixes various molecules needed for DNA replication. When he adds DNA, replication occurs, but each DNA duplex consists of a normal DNA strand paired with numerous segments of DNA that are a few hundred nucleotides long. What has been left out of the mixture
Answer: DNA Ligase
Explanation:
During DNA replication, both the parental DNA strands are separated and act as templates for the synthesis of new strands. The formation of the new strands occurs in only 5'-3' direction and thus both the strands are synthesized in a different manner. One new strand with the template of 3'-5' direction will be synthesized continuously and is called a leading strand. The other strand with the template of 5'-3' direction will be synthesized discontinuously in the form of DNA fragments. These fragments are called Okazaki fragments and the strand is called a lagging strand. DNA ligase connects these fragments later to form a continuous lagging strand.
Therefore, DNA ligase is required for ligation of Okazaki fragments, and in absence of DNA ligase, the ligation of fragments will not occur and the newly synthesized strand will be discontinuous. However, if DNA ligase is not present in the reaction mixture, then the chances are that not all the newly synthesized DNA strands will be discontinuous. Only the DNA molecule with the lagging strand will be in the form of fragments.
The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers.
(p + q = 1, p2 + 2pq + q2 = 1)
A.
0.0392
B.
0.0254
C.
0.045
Answer:
Explanation:
Answer: A, 0.0392
The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers.
(p + q = 1, p2 + 2pq + q2 = 1)
A: 0.0392
Identify the viral structure described.
have a capsid that has polyhedral and helical characteristics, and may have extra structures like protein tails. Bacteriophages are examples.
have an outer lipid bilayer known as a viral envelope, which is studded with proteins. Influenza and HIV are examples.
have many triangular faces. Most have 20 triangular faces and 12 corners. Polio and the papilloma virus are examples.
have long narrow capsids shaped liked cylinders. Rabies and ebola are examples.
1. Complex viruses
2. Enveloped viruses
3. Polyhedral viruses
4. Helical viruses
What is virus structure?Viruses are infectious particles comprising of two components:
An outer structural component called the Capsid.
The inner genetic material made of single stranded or double stranded RNA (Ribonucleic Acid) or DNA (Deoxyribonucelic Acid).
The Capsid structure is made up of glycoproteins.
These glycoproteins are encoded by genes present in the viral genome.
The viruses are incapable of reproducing on its own.
They infect the host cells and hijack their metabolic machinery which includes the protein-synthesizing machinery and also utilize the raw materials of the host cells to produce the progeny virions which are then released out the host cells.
The capsid structure is responsible for packaging the viral genome and protecting it from various degrading agents present in the external environment like nucleases.
Thus, this could be the answer.
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plase and help my plese . ammm
Organisms with soft bodies decay long before they can be fossilized.
FossilizationFossils are formed from the remains of plants or animals.
The soft parts of organisms decay or decompose while the hard parts have the tendency to fossilized.
The soft parts of organisms are acted upon by microbes. They extracellularly digest the materials and absorb the digested materials as their own food.
The remaining materials either become soil organic matter or become fossilized and preserved in the soil.
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Which factor is most likely to cause a faster rate of blood flow?
A.
decreasing stress
B.
exercising
C.
sickle cell disease
D.
atherosclerosis
Answer:
B. exercising
Explanation:
exercise widens veins and arteries making blood go faster
faster blood means more oxygen to muscles
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A father weighs 100kg and is running at a velocity of 4 m/s. What is the fathers kinetic energy?
Answer:
400 J
Explanation:
Formula :
Kinetic Energy (KE) = 1/2 x mass (m) x velocity² (v²)Solving :
KE = 1/2 x 100 x (4)²KE = 50 x 16KE = 400 J800J
Explanation:
we know,
k.E=(1/2)mv^2
=(1/2)100×4×4
800J
a food worker needs to thaw a package of ground beef
Answer:
Under cold water
Explanation:
This is how me and my family thaw beef