Answer:
See Explanation
Explanation:
Darwin's theory of natural selection has it that organisms that are better adapted to their environment happen to survive and reproduce passing on their favorable characteristics to their offspring.
It must have been that a gene mutation occurred in the ancestors of the Europeans which led to the appearance of the allele for lighter skin.
This trait became favorable in their environment and people that had it were able to survive and pass the trait on to their offspring hence it became predominant throughout the population.
Please Helpppp!!!!!????
Answer:
First a glucose molecule enters the body cell, and then a glucose molecule is broken down in the cytoplasm. Then, oxygen is used to break down smaller molecules, smaller molecules enter the mitochondrion. Finally, a large amount of energy is released.
Explanation:
After you ate an energy bar full of glucose, the molecules will first enter the cells, prepare to be broken down in the first site, cytoplasm. And now, oxygen takes a part in it, continue to break it down. The smaller molecules now enter the energy source of a cell, which is mitochondrion, the energy will be released here.
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where is the sun located?
Answer:
A. The sun is the center of our solar system
Explanation:
Name, describe, and give examples of two types of succession in ecosystems.
Answer: Primary and secondary succession
Explanation: In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed—disrupted—then recolonized following the disturbance.
What helps meteorologists to forecast the weather?
Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists
Answer:
Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models.
Which term describes the type of digestion that results from chewing and crushing food into smaller pieces?
absorption
peristalsis
chemical digestion
mechanical digestion
Answer:
mechanical digestion
Explanation:
Bill Nye Earth's crust
Answer:
1. rock
2. on
3. mantle
4. volcanoes
5. active
6. lava
7. hot
8. coolest
9. geyser
10. resistant
11. tectonic
12. tectonic/pangea
13. caves
14. earthquake
15. crust
Explanation:
PLEASE HELP!!
What forms are chromosomes in during:
Telophase
Early prophase
Late prophase
Metaphase
Anaphase
Telophase
Cytokinesis
(Choices are chromatins, chromatids, and sister chromatids)
Answer:
chromatids.
Explanation:
12345678910
Are any sperm or egg cells identical to each other in meiosis?
Answer:
yes
Explanation:
Answer:
Goodnight ,
Nope not all egg cells are identical that would be in most cases impossible.
2. High-pressure systems usually are associated with are associated with A. Clouds and precipitation, fair weather B. The jet stream, fronts C. Fair weather, clouds and precipitation D. Fair weather, fair weather
Answer:
Correct Answer ( A.) High pressure usually are associated with fair weather and low pressure systems are associated with clouds and precipitation
Explanation:
High pressure systems are usually are associated with ___________ and low-pressures systems are associated with _____________.
How many chromosomes are in the cells after they divide? How many chromatids are there?
Answer:
two chromatids
After DNA replication, each chromosome now consists of two physically attached sister chromatids. After chromosome condensation, the chromosomes condense to form compact structures (still made up of two chromatids). As a cell prepares to divide, it must make a copy of each of its chromosomes.
Explanation:
hope it help to you:)
Can someone plz help
Which plant structure absorbs most of the water and nutrients needed from the soil? tap roots secondary roots root hairs fibrous roots
Answer:
Root hairs
Explanation:
This is because the root hairs are part of root structure that are tubular and have lateral enlongations.
The root hairs increase the surface area of the root and allow for exchange.
They gave direct contact with the soil and then absorb water and nutrients to their increased surface area.
I neeed help plsss hurry
Answer:
Genotype for AB: IA and IB
Genotype of for O: ii
Sam owns a horse. He suspects the presence of Equine Infectious Anemia (EIA). What should he request his veterinarian to do?
Answer:
The question is incomplete because the options are not given, here are the options from another website.
A .rectal palpation
B.Coggins test
C. castration
D. vaccination
The correct option is B.
Coggins test
Explanation:
This is because coggins test is the test
carried out to check for Equine Infectious Anemia (EIA) antibodies if present in the horse's blood. Blood samples of the horse are collected and must be sent to a state approved laboratory. This test is majorly fine and needed whenever you want to take your horse to a show or whenever you transport your horse across state lines.
tRNA uses (anticodons/codons) to match to the mRNA.
Answer:
anticodons
Explanation:
codons are for mRNA
tRNA uses anticodons to match to the mRNA.
Which one does tRNA uses?tRNA (transfer RNA) molecules are responsible for carrying specific amino acids to the ribosomes during protein synthesis.
They have an anticodon region that consists of three nucleotides that are complementary to the codons on the mRNA (messenger RNA). The codons on the mRNA determine the sequence of amino acids in the growing polypeptide chain.
The anticodon on the tRNA base pairs with the complementary codon on the mRNA, ensuring that the correct amino acid is incorporated into the growing protein chain. The matching between the anticodon and codon is essential for the accurate translation of genetic information into protein synthesis.
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Which statement best describes how cell theory relates to a stem cell's ability to
change into specialized cell types?
The stem cells have the unique ability to undergo cellular differentiation which results into formation of a more specialized cell type which performs a unique function in body. Such as blood cells, neurons, etc.
What is Cell theory?
Cell theory has been proposed which describes various properties of a cell and how these cells develop. The theory has given some postulates and one of these postulates is that the new cells originate from pre-existing cells. Thus, the cell theory explains that the specialized cells which are present in body are synthesized from the stem cells.
Under the favorable conditions, the stem cells divide to form specialized daughter cells. These daughter cells become either a new stem cell or the specialized cells with a more specific function which includes blood cells, neurons, muscle cells or bone cells.
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What substances are in water, and where do they come from?
Answer:
Hydrogen and Oxygen
Explanation:
They are found in the atmosphere or they exist in gaseous, liquid or solid form
What is an example of victimology?
A victim's regular routine and mannerisms are analyzed.
A suspect's habits and food preferences are analyzed.
A list of victims is compiled and released to reporters.
A suspect's childhood history is analyzed.
Answer:
A
Explanation:
Criminal profilers use a method called victimology to understand more about the killer. By analyzing behavior, habits, and the temperament of the victim(s), the criminal profiler is able to construct a physiological profile of the person
1. In this environment, which trait is adaptive for the birds?
Answer:
Explanation:
Natural selection
(a) Part A Which claim is best supported by the data?
A)As annual precipitation increases, the populations of Species A and B increase.
B)As annual precipitation increases, the populations of Species A and B decrease.
C)As annual precipitation increases, the population of Species A increases while Species B decreases.
D)As annual precipitation increases, the population of Species A decreases while Species B increases.
Part B If the precipitation levels observed in year '09 remain the same and other resources remain constant, identify and describe what can be predicted to occur with the population of Species B over the next 6 years? Enter the answer in the box.
Answer:
D
Explanation:
It increases
The claim is best supported by the data is as annual precipitation increases, the populations of Species A and B decrease. Thus, option B is correct.
When annual precipitation increases according to the data?
As annual precipitation increases, the populations of Species A and B decrease. As annual precipitation increases, the population of Species A increases while Species B decreases. As annual precipitation increases, the population of Species A decreases while Species B increases.
As annual precipitation increases, the populations of Species A and B increase. As annual precipitation increases, the population of Species A decreases while Species B increases.
If the precipitation levels observed in year '09 remain the same and other resources remain constant, identify and describe what can be predicted to occur with the population of Species B over the next 6 years.
Therefore, The claim is best supported by the data is as annual precipitation increases, the populations of Species A and B decrease. Thus, option B is correct.
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In at least 200 words explain how DNA replicates
Answer: Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
~i hope this helps :)
Answer:
QUESTION:
ANSWER:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, like the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains
Meanwhile, as the helicase separates the strands, another enzyme called primase briefly attaches to each strand and assembles a foundation at which replication can begin. This foundation is a short stretch of nucleotides called a primer
After the primer is in place on a single, unwound polynucleotide strand, DNA polymerase wraps itself around that strand, and it attaches new nucleotides to the exposed nitrogenous bases. In this way, the polymerase assembles a new DNA strand on top of the existing one
Explanation:
A lot more than just 200 words sorry.
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help please
What adaptations do sand mason worms have to survive their environment?
What adaptations do sand mason worms have to survive their environment?
Question 1 options:
A stick out only a tube to feed
B hide in the sand
C build a tube of shells
D use tentacles on its head to capture food
Answer: I Think Its A/C
Explanation:
The adaption when sand mason worms have to survive their environment should be stick out the tube to feed.
What is the environment?It is the sum of the total elements, factors and the conditions that helped with the surrounding which create an effect on the development, action, or survival with respect to an organism or the group of an organism.
Based on the above explanation, we can conclude that the correct option is a.
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how does the mammalian body protect itself against infections
The body defends against infection by increasing the number of certain types of white blood cells (neutrophils and monocytes), which engulf and destroy invading microorganisms. The increase can occur within several hours, largely because white blood cells are released from the bone marrow, where they are made.
why does my feet smell?
u stink nvffvbhnbgvfcdrxsezawsexdrcftvybhun
Answer:
Because you stink, and it's sweaty.
Explanation:
I suggest you use a condom to scrub soap off each toe! <3
Students are growing plants in pots on the windowsill of
their classroom. After spring break, a student notices
that one of the potted plants furthest from the
windowsill has changed shape, as shown below....Which
statement best explains why this plant grew at a
different angle? *
A) A plant growth hormone accumulates in the shaded side
of the stems, causing the lower leaves to fall off.
B) A plant growth hormone accumulates in the shaded side of the stems, stimulating those sides to grow faster and
bend toward the light.
C) A plant hormone accumulates in the unshaded side of
plant cells, causing the plants to grow. much faster
D)A plant hormone accumulates in the shaded side of plant
cells, stimulating the plants to produce more flowers.
Answer:
ANSWER : B I think i am not sure i hope it helps
Which describes the habitat of a frog?
color for camouflage
prey for snakes
eats insects
marshes and ponds
Marshes and ponds describe the habitat of a frog. So, the correct option is D.
What is Habitat?An area or place where an organism or a collection of organisms naturally lives and thrives is known as a habitat. It includes all the physical, biological and environmental elements necessary for growth and reproduction in a given place. A habitat can be any form of ecosystem, including a forest, desert, ocean, swamp, or dryland.
Temperature, precipitation, soil, vegetation, and other elements that are specific to each ecosystem affect what types of organisms can survive there. Other important elements of a habitat are access to food, water and shelter. Habitat theory is important to ecology and conservation biology.
Therefore, the correct option is D.
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Which organs are shaped like beans and are located just below your ribs, in the middle of your back?
Answer: Your kidneys are bean-shaped organs, each about the size of your fist. They are located near the middle of your back, just below the rib cage.
Explanation:
Answer:
Kidneys
Explanation:
The kidneys are two bean-shaped organs, each about the size of a fist. They are located just below the rib cage, one on each side of your spine. Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine.
A man and a woman have a child together. The mother's blood type is type O and the child's blood type is type A What could the father's genotype be?
Answer:
iAiA or iAi = Type A
Explanation:
Blood group in humans is controlled by a gene with multiple alleles. The alleles iA and iB are co-dominant over one another but dominant over allele i. In the blood type:
iAiA or iAi - type A
iBiB or iBi - type B
iAiB - type AB
ii - type O
According to this question, a man and a woman have a child together. The mother's blood type is type O (ii) and the child's blood type is type A (iAi). This means that the father's blood type must be a type A with genotype "iAiA or iAi".
Plz HELP!! where does respiration, the process of releasing energy from combination of oxygen and glucose, occur? A. Cells B. Bronchi. C. Pharynx. D. Nose
Answer:
A
Explanation:
5. What does Grover give Percy?
Answer:
Explanation:
Grover gives Percy a present in a shoebox and it's the horn that Percy snapped off of the head of the Minotaur.
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