Answer:
A pearl is a hard, glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite)[3] in minute crystalline form, which has deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality of natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of this, pearl has become a metaphor for something rare, fine, admirable and valuable.
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A researcher is studying three wolf packs that hunt in the same area. The first pack preferentially kills mature, healthy moose; the second pack preferentially kills sick, old moose; and the third pack tends to kill an equal number of healthy and sick moose. Which pack likely plays the greatest role in determining the birth rate of the moose population
Answer:
The correct answer is - the pack that preferentially kills mature, healthy moose.
Explanation:
The birth rate is the number of individuals born in a population in a particular amount of time period. The birth rate can be determined by the individual born in a particular time period and that depends on how many healthy and viable individuals in a population can reproduce and produce new individuals.
Old and sicks are not the ones who can actively participate in reproduction and, however, if the number of healthy and mature individuals are killed there would be fewer newborns in the population.
Thus, the correct answer is the pack that preferentially kills mature, healthy moose.
Why the leading and lagging strand of DNA synthesize through different mechanism?What factor determine these differences
Answer:
ناسحتصس حساب سكسوسشت كمسنصو م٩سس
What energy using-process helps to cool the body
Answer:
Convection
Explanation:
convection is the process of losing heat through the movement of air or water molecules
Dựa vào đặc điểm của vỏ quả và hạt, loại quả nào dưới đây được xếp cùng nhóm với quả mơ ?
A. Nho B. Cà chua
C. Chanh D. Xoài
Answer:
A and C
Explanation:
help me please
Animals obtain phosphorus as inorganic phosphate from:
________________________
Answer:
Animals obtain phosphates by eating plants or plant eating animals
Explanation:
glad i helped
The presence of a negative allosteric effector on an allosteric protein would: a. cause a shift to the left in the sigmoidal curve. b. increase the number of R conformations. c. decrease the cooperativity of the substrate. d. raise the apparent value of the equilibrium constant, L. e. increase the likelihood of the binding of S.
Answer:
d. raise the apparent value of the equilibrium constant, L.
Explanation:
Allosteric regulation is a type of regulation of an enzyme by binding an effector molecule at a site other than the protein's active site (i.e., the allosteric site). The equilibrium constant (L) refers to the transition between two forms of an allosteric protein in absence of a ligand. The properties of allosteric enzymes are explained by conformational changes associated with a low-affinity tense (T) state, or a high-affinity relaxed (R) state. Negative allosteric effectors are molecules that bind to the allosteric site on an enzyme in order to decrease its activity, thereby leading the enzyme to a low activity T state and thus increasing the value of the equilibrium constant.
If something is tucked in, this means it is
covered with shells
folded up and small
immersed in water
in a snug or hidden place
Answer:
in a snug or hidden place
During diffusion, molecules move from areas of blank concentration to areas of blank concentration. Diffusion does not require blank to move molecules.
Answer:
high; low; energy.
Explanation:
Diffusion can be defined as the movement of gas molecules from a region of high concentration to a region of lower concentration until an equilibrium is attained or reached. This mixing of gas molecules in the liquid or gaseous state is due to their kinetic energy of random motion i.e without requiring bulk motion.
This ultimately implies that, diffusion is a phenomenon through which gas molecules in either a gaseous or liquid state spread out in response to a concentration gradient, which is simply the difference in concentration of the gases across a space.
During diffusion, molecules move from areas of high concentration to areas of low concentration. Also, diffusion does not require energy to move molecules.
In conclusion, increasing the surface area of a gas increases its collision rate and it's considered to be an evolutionary strategy that maximizes the diffusion of gas molecules because it catalyzes the rate of a gaseous reaction.
The organisms native to an area will impact the types of soil found in that area.
Please select the best answer from the choices provided
T
F
HELP ASAP
Uplift and formation of a mountain range divide a freshwater snail species into two isolated populations. Erosion eventually lowers the mountain range and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This scenario is an example of
Answer:
Sympatric speciation
Explanation:
Sympatric speciation is the evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region.
Describe how the availability of these genetic test might affect the frequency of genetic diseases in individuals and populations
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Genetic sequencing allows us to determine the exact location of the nucleotides in the DNA molecule, which means that we can "select" certain traits (such as an aversion to a disease
Look Up Jaire Alexander aint he fine?
Answer:
maybe jk he is
Explanation:
Complete the following statement using the choices below. Air moves out of the lungs when the pressure inside the lungs is ________. less than the pressure in the atmosphere greater than the intra-alveolar pressure greater than the pressure in the atmosphere equal to the pressure in the atmosphere
Answer:
Air moves out of the lungs when the pressure in the lungs is greater than the pressure in the atmosphere.
Which factors most influence whether a person will develop Alzheimer's disease?
Answer:
Hereditary transmission of the defected genes to the offspring.
Explanation:
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that providing live copepods (2 mm long) and feeder fish (2 cm long) would satisfy the dietary needs of all of the organisms. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)
Answer:
The correct answer is - Biwalves and sponges.
Explanation:
Suspension feeders are the organisms that depend on, for the dietary needs or nutriton, materials suspended in the water. The materials that are suspended are living organisms such as phytoplankton and zooplankton.
Biwalves and sponges are suspended or filter feeders and not predators like other organisms so providing copepods will not complete their food requirement and they will starve to death.
The correct answer is - Biwalves and sponges.
Which concept is illustrated in the flowchart below?
Overproduction arrow pointing Struggle for survival arrow pointing Survival of the fittest arrow pointing Changes in traits of species
Dynamic equilibrium
Genetic manipulation
Material cycles
Natural selection
Answer:
Natrual selection
Explanation:
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The concept illustrated in the flowchart is Natural selection. The correct option is 4.
What is natural selection?Natural selection is the process by which species evolve over time as the prevalence of certain traits increases or decreases in a population.
Natural selection, the mechanism by which species evolve over time, is depicted in the flowchart.
Overproduction of offspring causes competition for limited resources, resulting in a struggle for survival.
Based on their inherited characteristics, some people are better equipped to survive and reproduce than others.
These people are said to be "fit," and they are more likely to pass on their positive traits to their children. These advantageous traits become more common in the population over time, causing changes in the species as a whole.
Thus, the correct option is 4.
For more details regarding natural selection, visit:
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Your question seems incomplete, the probable complete question is:
The alpha male and female of a wolf pack produce offspring, but the rest of the individuals in the pack do not. This is an example of
O biotic potential
O group behavior
O intraspecific competition
O interspecific competition
Answer:
group behavior
Explanation:
The production of offsprings of males and females in the group is an example of the group behavior of the pack of wolves. This is best seen in lions and another big cat family. These acts are directly and indirectly inflected by the group decisions.Answer: group behavior
Explanation:
Before you make a hypothesis—your best guess at a solution—what must you do?
Group of answer choices
Run an experiment
Make observations
Form a theory
Draw conclusions
Answer:
make observations .
Explanation:
Collect as many observations about a topic or problem as you can.
Evaluate these observations and look for possible causes of the problem.
Create a list of possible explanations that you might want to explore.
According to the graph, which region is expected to reach a population of 50 million people in the year 2040?
According to the graph, the regions that are expected to reach a population of 50 million people in the year 2040 are (A). Mexico, Central America, the Caribbean island, and South America.
What is a population graph?A population graph is a type of graph that represents the distribution of population, increase or decrease of population of different areas or countries.
This population graph shows the population of different countries, some countries already reached 50 million. The countries which will be reached are in the purple line on the graph that are Mexico, Central America, the Caribbean island, and South America.
Thus, option (A), Mexico, Central America, the Caribbean island, and South America will have 50 million people in the year 2040.
Learn more about the population graph, here:
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Se podría afirmar que las aletas anteriores de las ballenas se pueden comparar con estructuras similares de organismos terrestres?
Answer:
Las aletas de una ballena y el brazo de un hombre son un ejemplo de órganos homólogos, porque la estructura ósea de las aletas de una ballena es parecida (homóloga) a la estructura ósea de nuestros brazos, debido a que ambas proceden del mismo origen embrionario pero se han modificado para desempeñar funciones ...
Which of the following statements is NOT true?
A. Mutations can be harmful.
B. Mutations are important to evolution.
C. Mutations can be beneficial.
D. Mutations are not part of evolution
ruth is presenting the feedback model to her class help her complete the statements
Answer:
Feedback models are tools that provides specific, concise, and clear feedback for a particular thing.
Explanation:
Feedback models are tools that provides specific, concise, and clear feedback for the organization so that an organization can make useful changes which is necessary for the organization growth and development. There is high need of this feedback model which helps us to know about the specific areas where one needs to improve performances in order to work more effectively.
which one of the following favourite the fastest transpiration rate
Answer:
which one of the following favourite the fastest transpiration
Answer:
where are the options hmm
by the way the answer is Hot temperature, dry and windy environment causes fastest transpiration rate.
Tami is doing experiments on three different unknown solids. She understands that treating them in different manners might result in changes to their bonding, and these changes may help her identify unknowns. She treats samples of each solid four different ways: heating them, letting them cool, shining bright light on them, and hitting them once with a hammer. The chart shows what happened to each sample.
Based on how they each acted in the trials, which substance(s) would most likely be metallic?
A and B
B
C
A and C
ASAP
In multicellular organisms, what do groups of cells form?
A. Prokaryotes
B. Homeostasis
C. Tissues and organs
D. Cell walls
Answer:
Letter c
Explanation:
tissues and organs
Ở người, alen A nằm trên NST X quy định máu đông bình thường là trội hoàn toàn so với alen a quy định mù màu. Một cặp vợ chồng sinh con, người vợ bình thường nhưng người chồng bị mù màu. Biết không xảy ra đột biến. Theo lí thuyết, tỉ lệ sinh con bị bệnh chiếm bao nhiêu phần trăm?
Answer:
Explanation:
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Which of the following best defines gene flow?
the sum of all genetic traits in a population's individuals at a given time any movement of genes from one population to another any movement of organisms from one environment to another the random change in the frequency of an allele in a population
Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another. Gene flow includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries.
Answer: any movement of genes from one population to another.
Explanation: :)
15 POINTS PLUS BRAINLIEST IF ANSWERED IN 5 MINS
The use of fossil fuels is a concern because it can lead to which of the following?
A polluted waters
B eutrophication
C global warming
D increased runoff
Answer:
A
Explanation:
if any oil get in water it can pollute it all ruining the water and it's a danger to animals
Khi nói về các hoocmôn tuyến tụy, phát biểu nào sau đây sai?
Explanation:
The exocrine component of the pancreas is the pancreatic islets. The endocrine cell of the pancreas produces hormone insulin. The major hormones released by the endocrine gland inside the pancreatic are glucose and glucagon, which control blood glucose levels, and cortisol, which inhibits insulin and glucagon production.
Jenna's pencil fell off of her desk and she quickly reached down to catch it before it hit the ground. In the process the
Answer:
The complete question with its options is:
Jenna's pencil fell off of her desk and she quickly reached down to catch it before it hit the ground. In the process, the (1)_____ system first recognized the falling pencil. It sent signals to the (2)______ system, which then moved the components of the(3) _____ system in order to catch the pencil.
Options:
(1) 1. Nervous 2. Muscular 3. Skeletal
(2) 1. Nervous 2. Muscular 3. Skeletal
(3) 1. Skeletal 2. Digestive 3. Nervous
The answer is:Jenna's pencil fell off of her desk and she quickly reached down to catch it before it hit the ground. In the process, the (1) Nervous system first recognized the falling pencil. It sent signals to the (2) Muscular system, which then moved the components of the(3) Skeletal system in order to catch the pencil.
Explanation:
The nervous system receives the signal that the pencil is falling. In other words, Jenna sees or feels that the pencil falls, so the senses send a signal to the nervous system to produce a response. We call this a stimuli. Once that the nervous system receives and processes the stimuli, it elaborates an answer. The answer is to send a signal to a group of muscles that will move certain bones to make the movement that will catch the pencil. The muscles are from the muscular system, and they are attached to the bones, which are part of the skeletal system. When the muscles contract, they move the bones and make the movement possible.
