Answer:
The physical factors of the Earth affect population density by becoming a key determinant in which the individuals opts to live. The majority of the individuals desires to live in an area closer to their place of interest, where the climate is accessible and favorable. When there is an elevation in population, the rate of birth becomes high, and the age structure of the population becomes like a pyramid that signifies that more of the individuals in the population belongs to a younger age.
Earth’s physical factors greatly influence population density
It is because on physical factors people depends. Physical factors that affect population density are water, climate, land shape, vegetation, soils and availability of natural resources etc. If these factors are present in large quantity then the population density will be higher and vice versa.
When population growth increases in an area, the population of a country has a triangle-shaped age structure which represents higher population of younger individuals and lower number of aged people.
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How do scientists use creativity
Answer:
they can do new things to find stuff
Explanation:
Question: How do scientists use creativity in their careers?
OPitions:
Devising a hypotheses involves creating new explanations for phenomena.
The most important part of an experiment is how colorfully the data is displayed.
Scientific results must be explained in a creative, exciting way.
Scientists judge each others' work based mostly on how creative it is.
WILL MARK AS BRAINLIEST!!!!!
A hydra is an aquatic organism that lives in fresh water. During reproduction an outgrowth begins to form on the parent. The outgrowth continues to develop into the daughter organism and eventually breaks off of the parent. Which type of reproduction does this represent?
A.
binary fission
B.
regeneration
C.
budding
D.
vegetative propagation
C is the correct answer
The right answer is C
Gemmiparity (or budding) is a type of asexual or vegetative multiplication, in which a bud develops which then separates before evolving into a complete individual. The new organism is a clone that has the same genome. Buds, also called sprouts, may include a rough outline of all the parent's tissue, or only some of them.
Astronauts experience similar feelings of dizziness and disorientation upon arrival in space and upon their arrival back on Earth. What does this indicate to researchers?
Final answer:
Dizziness and disorientation felt by astronauts indicate their bodily sensitivity to changes in gravity when transitioning between Earth and space, where they experience microgravity conditions leading to muscle atrophy and bone loss.
Explanation:
The sensations of dizziness and disorientation astronauts experience upon entering space and returning to Earth indicate that the human body is sensitive to changes in gravity fields and acceleration. In space, astronauts experience weightlessness or microgravity because they are in a state of constant free-fall towards Earth, similar to how passengers might feel if an elevator cable snaps or in a plane in descent. This creates an environment where the gravitational force is still present but does not give the sensation of weight. Furthermore, this microgravity condition can lead to significant physiological changes such as muscle atrophy and bone loss, which researchers continually study to better understand and mitigate.
Extended periods of living in a microgravity environment pose challenges, such as the atrophy of muscles and the loss of bone mass due to the lower mechanical demands on the body compared to Earth's gravity. Understanding the effects of microgravity is crucial for planning longer space missions and ensuring the health and safety of astronauts. Cardiovascular adaptations also occur due to the absence of gravity-induced pressure differentials in the body's blood distribution, affecting heart function.
A mutation occurs that prevents a cell from taking in the glucose that it needs for energy production. What most likely to happen?
The cell will die. Because if the cell can not take the glucose and it can not get energy from it. So the activities that can support the normal life of the cell will not continue.
Which statement is most likely to be true, based on the drawings below? Two skulls A. Species A had more massive jaw muscles than species B. B. Species A walked more upright than species B. C. Species A was more capable of speech than species B. D. Species A was more similar to modern humans than species B.
The correct answer is: A. Species A had more massive jaw muscles than species.
Massive jaw muscles are correlated to more primitive diet. It is believed that shrinking jaw muscles is part of the evolution. It is the way for making the space for a bigger brain.
Answer:
The correct answer is: A. Species A had more massive jaw muscles than species.
I hopes this helps
Explanation:
what indicates to a muscle that it should contract
Which statement about natural selection is true
please write the statements to get help
Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.
The correct option is (C).
1. Natural selection is a fundamental mechanism of evolution proposed by Charles Darwin, where individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring.
2. This process results in the gradual accumulation of beneficial traits within a population over successive generations, leading to the adaptation of organisms to their environments.
3. Natural selection acts on existing variation in traits within a population, favoring traits that enhance an organism's ability to survive and reproduce in its specific environment.
4. Over time, natural selection can lead to changes in the frequency of traits within a population, ultimately driving the process of evolution.
5. While natural selection is a central concept in evolutionary biology, it is not synonymous with evolution itself. Evolution encompasses a broader range of processes, including genetic drift, gene flow, and mutation, which collectively contribute to the diversity of life on Earth.
complete question given below:
Select the correct answer. Which statement about natural selection is true? A. Natural selection and evolution are two terms for the same phenomenon.
B. Natural selection is an outdated theory to explain how evolution took place.
C. Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.
D. Natural selection is the process by which organisms develop variation in traits, which gives them a better chance of survival.
which of the following factors and which area biotic factors
A. rain and grass are biotic; wind and humidity are abiotic
B. algae and fungi are biotic: temperature and rainfall are abiotic
C. oxygen and sunlight are biotic: maple trees and spiders are abiotic
D. fish and whales are biotic: plankton and bacteria are abiotic
The answer is (B) because abiotic factors , like rainfall and temperature , are non-living things.
Biotic factors are living or once-living organisms in an ecosystem, while abiotic factors are non-living components in an ecosystem. The correct answer to this question is B. algae and fungi are biotic; temperature and rainfall are abiotic.
Explanation:In an ecosystem, there are both biotic factors and abiotic factors. Biotic factors are living or once-living organisms, such as grass, algae, fungi, fish, whales, maple trees, spiders, plankton, and bacteria. Abiotic factors, on the other hand, are non-living components, such as rain, wind, humidity, temperature, oxygen, and sunlight. Therefore, the correct answer is: B. algae and fungi are biotic; temperature and rainfall are abiotic.
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When two solvents are separated by a semi-permeable membrane, water flows from low solute concentrations to high solute concentrations. What would happen if external pressure is applied to the solution with higher solute concentration? A) The semi-permeable membrane will lose its activity. B) Water will stop flowing across the semi-permeable membrane. C) Water will flow more freely across the semi-permeable membrane. D) The concentration of solute will become equal on both sides of the membrane.
Answer:
C) Water will flow more freely across the semi-permeable membrane.
Explanation:
Osmosis is the net movement of water molecules from an area of higher water concentration to that of lower water concentration.
Here in this case, an external pressure is applied to the solution with higher 'solute' concentration. If the pressure applied is greater than the osmotic pressure then the direction of water flow through the membrane would be reversed. Therefore, water molecules will flow from the high solute concentration to lower solute concentration.
The option C is the correct option.
Which is water will flow more freely across the semi-permeable membrane.
Explanation:According to the Information given the water will flow from high to low concentration through the process osmosis.If external pressure is applied to the the solution with high concentration.The water will flow from higher pressure to lower pressure same direction as of osmosis.So as a result of this water will flow more freely across the semi-permeable membrane.The state of matter that exists only at extremely low temp is called Bose Einstein
The state of matter that exists only at extremely low temp is called Bose Einstein condensate
which never changes during physical change
It only affects the form of the chemical substance but not the chemical composition.
Hope that helps :)
Final answer:
During a physical change, the chemical composition, mass, number of atoms, and number of molecules of a substance remain unchanged. Key properties, such as color and boiling point, typically do not alter in a physical change because no chemical bonds are broken or formed.
Explanation:
During a physical change, certain properties of substances are consistent and do not change. These include the chemical composition of the substance, as well as the mass, the number of atoms, and the number of molecules involved. Physical properties that do not alter during a physical change can include color, boiling point, and state of matter, as no bonds are broken or formed during the process. Examples of physical changes include melting, freezing, and tearing.
A key concept to understand is the conservation of mass, which states that in a closed system, the mass of the substances will remain constant, regardless of the physical changes they undergo. Matter can change its form—such as ice melting into water—but it cannot be created or destroyed. This principle is a cornerstone of physical science and supports the idea that during physical changes, certain properties remain unchanged.
Which statement best describes the difference between the sympathetic and parasympathetic nervous system
Answer:
The Statements Are:
A). The sympathetic system sends signals within the brain and the parasympathetic system sends signals between the brain and the body.
B). The sympathetic system controls voluntary body movements and the parasympathetic system controls involuntary functions.
C). The sympathetic system contains the brain and spinal cord and the parasympathetic system contains the peripheral nerves.
D). The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
Explanation:
Which of the following limit cell size? Select all of the answers that apply.
A. ratio of surface area to volume
B. rate of moving materials across the cell's membrane
C. efficiency of using the information in a cell's DNA
D. efficiency of DNA replication and cell division
Answer:
The correct answer would be A. ratio of surface area to volume .
The cells are mostly spherical in shape.
The surface area of the sphere = 4πr²
The volume of the sphere = (4πr³)/3
Thus, the increase in size would increase the volume (r³) more as compared to the increase in surface area (r²).
The ratio of surface area to volume would decrease due to which the diffusion rate would not be efficient enough to distribute the essential elements throughout the volume of the cell.
The cell would not be able to survive.
This is the reason that cells have a small size.
The answer options (factors) that are capable of limiting a cell size include the following:
A. ratio of surface area to volume.
B. rate of moving materials across the cell's membrane.
C. efficiency of using the information in a cell's DNA.
A cell can be defined as the fundamental (basic) functional, structural and smallest unit of life, which is mainly found in all living organisms.
Some of the factors that limit the size of a living cell include the following:
The ratio of surface area to volume: this is always required to be small, so as to allow sufficient materials such as food, move through the cell membrane quickly for the cell's survival.The rate of moving materials across the cell's membrane: the survival of a cell is highly dependent on the rate at which necessary materials move across it's cell membrane.The efficiency of using the information in a cell's DNA: a small sized cell has higher efficiency in the use of information that are stored in its deoxyribonucleic acid (DNA).Read more: https://brainly.com/question/19559847
A student claims that cellular respiration is essential to cells so that they have a means for getting rid of excess carbon dioxide. What is wrong with his statement?Unlike photosynthesis, cellular respiration occurs in
1. Cellular respiration does not consume carbon dioxide (CO2).
Cellular respiration is a process by which plants produce energy. It consists of anaerobic (without O2) and aerobic phase(with the presence of O2). During the cellular respiration chemical energy derived from the nutrients (like glucose) is transformed into energy molecule adenosine triphosphate (ATP).
2. Unlike photosynthesis, cellular respiration occurs in all eukaryotic organisms (photosynthesis only in plants and some microorganisms). The processes of cellular respiration occur in cytosol (glycolysis) and in the mitochondrion of a cell (Krebs cycle and electron transport chain).
Answer:
cellular respiration does not consume carbon dioxide
Explanation:
Which of the following types of passive transport involves the movement of molecules via special transport proteins? A. facilitated diffusion B. simple diffusion C. filtration D. osmosis
Answer:
A
Explanation:
There are different mechanisms for transport of molecules across the cell membrane. One kind of this transport is facilitated diffusion, this is a form of passive transport, not requiring any ATP (the opposite would be active transport, where it does require ATP.
Simple diffusion does require special transport proteins, and neither does osmosis. Filtration is a technique used for sterilisation of water, where any impurities can be drawn out of the liquid
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How you identify cytoplasm
In cell biology, the cytoplasm is the material within a living cell, excluding the cell nucleus. It comprises cytosol (the gel-like substance enclosed within the cell membrane) and the organelles – the cell's internal sub-structures. All of the contents of the cells of prokaryotic organisms (such as bacteria, which lack a cell nucleus) are contained within the cytoplasm. Within the cells of eukaryotic organisms the contents of the cell nucleus are separated from the cytoplasm, and are then called the nucleoplasm. The cytoplasm is about 80% water and usually colorless.[1]
hope it helps
What process uses rock layers and index fossils to determine an object estimated age
Answer:
related dating is the answer
Explanation:
Which of the following best explains why what we know about cells is called a theory and not a law
Cell theory explains cell behavior where a law would describe it.
Hope this helps!
-Payshence
D. the answer is D yayaya
Fossils can only be formed when?
Fossils can only be formed when mud, silt or tar is in the area to preserve the fossil, If erosion does not occur and allows the fossil to form, and Oxygen and microorganisms cannot decay the bones.
Does studying fossils show us that life, environments, or both of these change over time?
A.
Studying fossils shows us that only life changes over time.
B.
Studying fossils shows us that only environments change over time.
C.
Studying fossils shows us that both life and environments change over time.
Well, I know logically that both life and environment change over time. So I think the answer would be C, studying fossils shows us that both life and environments change over time. Hope this helps.
Where dose deposition form in the atmosphere
How long after crocodile mating are the eggs laid?
Crocodiles normally take 3 or 4 weeks to develop their eggs after mating. After laying the eggs, it'll take them 3 months more or less to hatch.
Hope it helped,
BioTeacher101
around 80 days
The eggs have an incubation period of around 80 days. The rate of development is strongly influenced by temperature. The warmer it is the faster they grow! After two to three weeks the temperature of the nest determines the sex of the embryo
Btw can i have brainliest
When of the following is NOT a type of valve in the heart: Tricuspid Semilunar Bicuspid Arterial
The heart has three types of valves:
Tricuspid valve—located between the right atrium and the right ventricle
Bicuspid valve—located between the left atrium and the left ventricle
Semilunar valves—located between the right ventricle and the pulmonary artery, and also between the left ventricle and
the aorta
When of the following is NOT a type of valve in the heart? Arterial
in which part of the plant cell does turgor pressure occur
the inside wall of the plants cell
What is the total numbet of atoms in Oxygen?
P.S. is the table above right?
The molecule of Oxygen has 2 Oxygen atoms.
Please correct any mistakes in my answer..Glad to help ya! :)
What is endosymbiosis?
symbiosis in which one of the symbiotic organisms lives inside the other
Endosymbiosis is a symbiotic relationship where one organism lives inside another, both benefiting, which led to the evolution of mitochondria and chloroplasts in eukaryotes.
Endosymbiosis is a mutualistic relationship in which one organism, typically a single-celled one, lives inside another. This symbiotic relationship is not only beneficial for both organisms involved, but it also played a crucial role in the evolution of eukaryotic cells. It is through endosymbiosis that organelles such as mitochondria and chloroplasts are believed to have originated.
Examples of endosymbiosis include the microbes that produce vitamin K within the human gut. These microbes are protected within this environment and, in turn, provide a vitamin that humans cannot synthesize on their own.
1. What is the total magnification of an object if the ocular lens magnification is 20x and the objective lens magnification is 45x?
2. Which objective lens is in place if the object you are viewing is magnified 1000x assuming an ocular lens magnification of 10x?
3. What is the diameter of the field of view (DFV) of a 1000x objective lens if the DFV of a 400x objective lens is 500 μ? Express your answer in mm.
4. What is the DFV of a 40x objective lens if the DFV of a 10x objective lens is 3 mm? Express your answer in μ.
5. When viewing an organism using the 40x objective lens from question 4, you estimate 6 organisms could fit across the DFV if they were laid end-to-end and 20 could fit is stacked side by-side. What is the length and width of this organism (in microns)?
6. What is the DFV of a 25x objective lens if the DFV of a 100x objective lens is 1.5 mm?
7. Using the 100x objective lens from question 6, you
1. Answer: 900x
A typical microscope has two lens: ocular lens which located near the eye, and objective lens which located near the object. The image will undergo magnification of both lens. The total magnification of the object would be the product of both lens multiplication, not the sum. The multiplication will be: 20x * 45x= 900x
total mag= ocular * object
total mag= 20x * 45x
total mag= 900x
2. Answer: 100x
The total magnification of the object would be the product of both lens multiplication. If the total magnification 1000x, that mean it was the product of ocular lens and objective lens. If ocular lens magnification is 10x, objective lens magnification would be:
total mag= ocular * object
1000x= 10x*object
object=1000x/ 10x=
object=100x
3. Answer: 0.2 mm
The area of the microscope that can be viewed by the eye should be the same. But since the magnification is different, the actual area that it represent will be different. Microscope with bigger magnification will have smaller diameter of the field of view(DFV). Remember that micrometer(μm) is 1/1000 of millimeter(mm). The DFV would be:500 μm/ ( 1000x/400x)= 200μm= 0.2 mm
4. Answer: 750μm
This question is similar to number 3 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm) .
The DFV of a 10x objective lens is 3 mm. Then the DFV of 40x lens would be:
DFV2= DFV1/ (mag1/mag2)
DFV2= 3mm/ ( 40x/10x)= 0.75 mm= 750μm
5. Answer: 125μm x 37.5μm
The lens DFV of microscope from question 4 is 750μm, so the width and length of the area would be 750μm.
If 6 organisms could fit across the DFV if they were laid end-to-end, the length would be: 750μm/ 6 organism= 125μm
If 20 organism could fit is stacked side by-side, then the width would be: 750μm/ 20 organism= 37.5μm
6. Answer: 6mm
This question is similar to number 3 and number 4 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm).
The DFV of a 100x objective lens is 1.5 mm. Then the DFV of 25x lens would be:
DFV2= DFV1/ (mag1/mag2)
DFV2= 1.5mm/ (100x/25x)= 6 mm
7.Using the 100x objective lens from question 6, you estimate 12 organisms could fit across the DFV if they were laid end-to-end and 30 could fit is stacked side-by-side. What is the length and width of this organism (in microns)?
Answer: 0.5mm x 0.2mm or 500μm x 200μm
The lens DFV of microscope from question 6 is 6 mm, so the width and length of the area would be 6 mm.
If 12 organisms could fit across the DFV if they were laid end-to-end, the length would be: 6mm/ 12 organism=0.5mm
If 30 organism could fit is stacked side by-side, then the width would be: 6mm/ 30 organism= 0.2mm
The magnification of microscopy is given by the product of the ocular and objective lens magnification. Diameter of Field of View (DFV) changes inversely with the magnification. The size of an organism is estimated by dividing the DFV by the number of organisms that fit across the view.
Explanation:In microscopy, the total magnification is obtained by multiplying the magnification of the ocular lens and the objective lens.
1. For an ocular lens with magnification 20x and an objective lens with magnification 45x, the total magnification is 20x*45x = 900x.
2. If the total magnification is 1000x and the ocular lens magnification is 10x, the objective lens magnification is 1000x/10x = 100x.
3. DFV decreases with increasing magnification. If the DFV at 400x is 500 μ, then at 1000x, the DFV would be (500 μ * 400x) / 1000x = 200 μ or 0.2 mm.
4. If the DFV at 10x is 3 mm, then at 40x, the DFV would be (3 mm * 10x) / 40x = 750 μ.
5. If 6 organisms fit across the DFV end-to-end at 40x (750 μ), each organism's length is 750 μ / 6 = 125 μ. If 20 organisms fit side by side, each organism's width is 750 μ / 20 = 37.5 μ.
6. If the DFV at 100x is 1.5 mm, then at 25x, the DFV would be (1.5 mm * 100x) / 25x = 6 mm.
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Would a line graph or a bar graph be better for showing the number of birds of each color in a population
A bar graph is the best graph to use, it is way much easier than a line graph and it works best.
A bar graph.
When your trying to find the number of birds color in a population it would be best to use a bar graph because, using a line graph is better if it's used for financial buisness.
-A line graph is used to show changed in stuff for exapmle: Amount of money, People lost, Jobs lost, etc.
-A bar graph is basicaly used for graphing the amounnt bought or sold, etc.
The cooking of eggs on a hot stove is an example of which of the following?
There are no answer choices, so I don't know what you are looking for exactly. But if I took a guess on what topic you are learning about, I would say that the cooking of eggs is a chemical change, due to the fact that the egg is changing composition and you cannot uncook an egg.