Population decline causes an extreme genetic drift called a bottleneck effect. The correct option is C.
What is bottleneck effect?The bottleneck effect describes how a population's size is reduced and then increased, affecting the distribution of genetic variation among its members.
It happened when the population reduced severely. Events like natural disaster or decline of the population.
Thus, the correct option is C) bottleneck effect.
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Burning fossil fuels involves releasing carbon dioxide and other greenhouse gases into the atmosphere at a rate that is much faster than the carbon cycle can remove it.
Is the previous statement true or false?
Answer:
true
Explanation:
because the energy that comes from burning fossil fuels is converted into electricity and heat in power plants. When fossils are burned, carbon and hydrogen react with oxygen to produce carbon dioxide (CO2) and water (H2O) during this reaction heat is produced
this is important right answers only
Which biome has the lowest temperatures?
A. Grassland
B. Desert
C. Taiga
D. Tundra
Answer:tundra
Explanation:
it has the coldest climate like Antarctica
Select the correct answer. Plants, through the process of photosynthesis, use solar energy to produce the end product glucose. Since energy is used here, what type of reaction is photosynthesis? A. Endergonic reaction B. Exergonic reaction C. Reversible reaction
Since energy is used, the type of reaction photosynthesis is : ( A ) Endergonic reaction
What is Endergonic reaction ?Endergonic reaction is a type of reaction that requires a free energy to continue, since photosynthetic organisms such as green algae require the use of free energy ( solar photons ) to reduce CO₂ and oxidation of H₂O to oxygen.
Therefore we can conclude that photosynthesis is an example of an endergonic reaction.
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What type of fault forms when the hanging wall moves upward past
the footwall?
a. normal fault
b. fault-block mountain
c. .strike-slip fault d. reverse fault
Answer: d (reverse faulting)
Explanation:
Gas Exchange and Transport Oxygen and carbon dioxide are exchanged across the walls of alveoli and capillaries. Chemical properties of blood and red blood cells allow for efficient transport of gases throughout the body.Carbon dioxide and oxygen are exchanged across capillary and alveolus walls.Hemoglobin binds with and transports oxygen that diffuses from alveoli to capillaries. It also increases the efficiency of gas exchange.Carbon dioxide is transported in the blood in three ways. Most combines with water and forms carbonic acid. Some dissolves in plasma. Some binds to hemoglobin and proteins in plasma.
For Questions 2-7, complete each statement by writing the correct word or words.
3. The gases exchanged in the lungs are carbon dioxide and__________.
The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them
What element do all ancient seafaring societies have in common?
a. they used the stars for navigation.
b. they were all located near the pacific ocean.
c. they conquered every new location they found.
d. they developed their own version of the compass.
Answer:
d
Explanation:
im pretty sure it is d bc i juss took a quiz
The element do all ancient seafaring societies have in common is a. they used the stars for navigation.
Waht are the Celestial navigation?In additionally referred to as navigation, is the historic and persevering with the current exercise of role solving the use of stars and different celestial our bodies that allows a navigator to appropriately decide their real cutting-edge bodily role in space (or at the floor of the earth) while not having to rely.
Ancient sailors used the celebs to assist manual them whilst they had been at sea. Just like Phoenicians regarded to the solar's motion throughout the heaven to inform them their path. Stars due to the fact that historic instances are described as forever, hope, destiny, heaven and freedom.When the sunset at night, sailors used the celebs to navigate. Stars circulate throughout the sky from east to west, and a few stars, known as upward thrust and set stars, start and give up their nightly route underneath the horizon.Read more about the navigation:
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Occasionally, newborn babies are born with a yellowing of the skin. What is this condition called, and
what organ may be underdeveloped in these babies?
a. Cyanosis, the kidneys.
b. Jaundice, the liver.
c. Melanosis, the lungs.
d. Vitiligo, the digestive tract.
Answer:
B
Explanation:
jaundice and the liver is the answer to this question
What additional procedure must be done to indicate glucose is present?
The additional procedure that must be done to indicate the presence of glucose, and its level, is the blood glucose test, using devices that measure the consent of glucose in the blood.
What is a blood glucose test?
The capillary blood glucose test is done with the aim of checking blood sugar levels at a certain time of the day and for this a blood glucose device must be used that performs the analysis of a small drop of blood that is taken from the fingertip.
With this information, we can conclude that he additional procedure that must be done to indicate the presence of glucose, and its level, is the blood glucose test, using devices that measure the consent of glucose in the blood.
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Cooling the body decreases thyroid hormone release
Cooling the body decreases thyroid hormone release, which in turn decreases metabolic and oxygen consumption rate.
What do you mean by Hormone?Hormone may be defined as a chemical substance synthesized in the body that controls and regulates the activity of certain cells or organs.
Thyroid hormone is responsible for the regulation of metabolism such as energy expenditure, protein metabolism, thermogenesis, etc.
Therefore, cooling the body decreases thyroid hormone release, which in turn decreases metabolic and oxygen consumption rate.
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A river runs near a town. The river floods the town after heavy rain. The people want to build a dam near the town to solve the flooding problem. A picture shows a town next to a river. There is a dam farther up the river. A lake is behind the dam. Question How will the dam solve the town's problem? Answer options with 4 options A. The dam will reduce the need for electricity. B. The dam will increase the water level of the river. C. The dam will reduce the risk of the river overflowing. D. The dam will store water for towns nearby that have less water.
The dams block water so by the dams blocking the water flow the people down stream get lesser water.
Thus, option "D" is correct.
What are the central idea of "causes and effects of building river dams"?The central idea that organizes the essay is "causes and effects of building river dams", so these two are the major points that the essay needs to talk about, other points may be included only if they are relevant to the topic. Thus, since Jaycee already wrote about the reasons that river dams are built (The causes), the next paragraph should focus on the effects of river dams.
Thus, option "D" is correct.
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What is the process heterotrophs use to obtain energy from other organisms.
Answer:
Chemosynthesis
Explanation:
is used to produce food using the chemical energy stored in inorganic molecules
How do genetics play a role in evolution?
A few of these characteristics are favourable and are called as beneficial mutations which provide a better survival benefit to changing surroundings. Evolution of a new class of species altogether occurs when a permanent change takes place in the phenotype of an entity as a result of natural selection and competition when an environment continues to stay for longer durations incorporating better-adapted entities.
Gene mutations cause the evolution we observe. It causes a change either in the organization or amount of genetic material in a cell. Such a mutation if occurred in a gamete can be easily inherited by the emerging gamete. New alleles of genes are produced as a result of mutations and hence the variations between entities. Therefore, genes and genetic mutations play a significant role in the process of evolution.
Carbohydrates act as "ID cards"
for cells. Where are they located?
A.the exterior of cell walls
B.inside of the nucleus
C.attached to the rough ER
D.embedded in the cell membrane
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A. The Exterior of Cell WallsName the following structure: CH3CH₂CH₂OH A. butanol B. propanol C. ethanol D. methanol
Answer:
B. Propanol. (Propan-1-ol)
Explanation:
Propan-1-ol is a primary alcohol with the formula CH3CH2CH2OH and sometimes represented as PrOH or n-PrOH.
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If the dna triplets is atg-cgt, the trna anticodons are group of answer choices atg-cgt. Uag-cgu. Aug-cgu. Uac-gca
If the dna triplets is atg-cgt, the trna anticodons are Uac-gca.
Are codons triplets of tRNA?The triplet of bases that is complementary to a codon is called an anti-codon the triplet in the mRNA is called the codon and the triplet in the tRNA is called the anti-codon.
Thus, option "D" is correct.
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50 pts!!compare the two theories regarding the extinction of dinosaurs. they have all but one point in common. that is
a) food webs collapsed
b)70% of life on earth became extinct
c)earth was nicked from its normal orbit
d)temperature dropped and climate change drastically
Answer:
B: 70% of life on earth became extinct
The first strands of DNA were observed through which microscope?
Answer:
it was tru an electron microscope.
Explanation: need any more help ask me
In which eukaryotic organelle are various macromolecules broken down and destroyed?.
The Answer:
Lysosome.
The geologic time scale began when earth was _____ And goes on until present. It divided earth’s _____ history into ____ _____ _____.
*Fill in the blanks *
If t=talk and t= short what will be the physical appearance of the offspring in the cross
Answer:
If T=tall and t=short, what will be the physical appearance of the offspring in the cross?
Explanation:
It looks like your question is incomplete, so I'll try to fill in the blanks.
The offspring will depend on the parents. Each parent will need two alleles, so each parent would have to be TT (tall), Tt (tall) or tt (short--this is the only way to have a short individual).
Here are all the possible crosses:
TT X TT = 100% TT (all tall)
TT X Tt = 50% TT, 50% Tt (all tall)
TT X tt = 100% Tt (all tall)
Tt X Tt = 25% TT (tall), 50% Tt (tall), 25% tt (short)
tt X tt = 100% tt (short)
Note that if there is a T present in the genotype (TT or Tt), that individual will be tall. The only way to produce short offspring is for the both parents to have a copy of the short allele (t).
Which tissue makes up the husk of coconut?
Answer:
Sclerenchymatous tissue
If my mom is O positive and my father is O negative (Making me and my brother O.) Would we be positive O or negative O?
Answer:
O negitive
Explanation:
O negitivge is the domanet gene so if a little bit is there it will take over
Answer:
O Negative.
Explanation:
Positive and Negative makes a negative.
Which prediction most likely describes the location of two of the three cities?
Which prediction most likely describes the location of two of the three cities?
a. City 1 is north of city 3.
b. City 2 is north of city 3.
c. City 3 is north of city 1.
d. City 3 is south of city 2.
Answer:
C. City 3 is north of City 1
Explanation:
City 3 shows cooler temperatures than City 1 throughout the year. This is consistent with North American cities found at northern lattitudes compared to those found further south. Compare Milwaukee, WI (north) with Miami, FL (south).
5. Cellular organization means which of the following?
All organisms are multicellular.
All living and nonliving things are made up of at least 1 cell.
O All organisms are made up of at least 1 cell.
An organism must have more than 1 cell to be considered living.
Which substances contains thylakoids
Answer:
Chlorophyll contains thylakoids.
Which abiotic factors are limiting for habitat and ecosystem development in the marine environment?
Answer:
water flow rate, salinity, acidity, oxygen, light levels, depth, and temperature
Explanation:i learned it
Why are senses necessary for behavior?
Answer: Senses are necessary for behavior because behavior is a response to an organism's environment. Without senses, the organism would be unable to sense anything in the environment to react to. Senses tell an organism what to avoid and what to interact with; they guide the organism's decisions. Even organisms with very simple senses have some way to detect changes in the environment that need to be reacted to.
When DNA polymerase is in contact with adenine in the parent strand, what base does it add to the
growing daughter strand?
Answer:
Heterozygous
Explanation:
The polymerase in the parent is Dominent and can mask the recessive allele
Answer:
Cytosine
Explanation:
Pet stores sell meal worms as food so it is important that they are fed well so the supply does not dwindle. If a pet store wanted to identify the preferred type of food for mealworms what might their investigation look like?
The kind of investigation used in the scenario above will be either primary or secondary investigation.
Why would they use primary or secondary investigation?If they wanted to carry out an investigation from scratch using their own parameters, case-controls, and random sampling from scratch perhaps so they can have control, then that would be the primary investigation.
Secondary investigation on the other hand gleans off information already researched and provided at the primary investigation level.
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A Drosophila fruit fly cell with 2N = 8 chromosomes-two of each kind- is called
Answer: haploid, diploid) cell
Explanation: