Describe the changes that a country undergoes as it passes through the three stages of the demographic transition. Use the United States as an example.

Answers

Answer 1

In stage 1, both birthrate and death rate are high, and the population grows slowly. Stage 1 describes the US for the early years of history. Then during Stage 2, improvements in health care, sanitation, and nutrition all people to live longer and reduce the death rate. The birthrate however, remains high during this stage so the population increases rapidly. This occurred in the US in the 1800s. Eventually, birthrate decreases to match the low death rate and the population growth slows and eventually stops. This is the US today.

Related Questions

identify the plankton

Answers

Phytoplankton cells are commonly identified with a microscope. A trained technician can identify many different kinds of diatoms and dinoflagelates in a plankton sample. However, the emerging science of pigment analysis can be faster, cheaper, and less labor-intensive.

You are a molecule of water. Choose a starting point in the water cycle and describe the process you would go through to move through the entire cycle.

Answers

Answer:

I would start on Evaporation. I will then have to go through condensation, then precipitation, then a surface runoff then into groundwater which will start the evaporation process all over again :)

What happens when the seafloor spreads?

A: Basalt cools to form a new crust near the mid-ocean rift.

B: New crust moves away from the mid-ocean rift.

C: Old crust moves closer together.

D:New crust forms near the continental slope.

Answers

Answer:

A

Explanation:

lava can erupt into water, when it cools it can create new land which is called sea floor spreading.

Answer:

A

Explanation:

I got the same answer from k12

What will happen to the pressure in the brain if water moves into it from the blood?​

Answers

Answer:

A sudden increase in the pressure inside a person's skull is a medical emergency. Left untreated, an increase in the intracranial pressure (ICP) may lead to brain injury, seizure, coma, stroke, or death. With prompt treatment, it is possible for people with increased ICP to make a full recovery

Explanation:

A medical emergency occurs when a person's internal pressure suddenly increases. An increase in intracranial pressure (ICP) may cause brain damage, seizures, comas, strokes, or even death if left untreated.

What is brain?

The brain is a sophisticated organ that manages every bodily function as well as thought, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger. The central nervous system, or CNS, is made up of the spinal cord that emerges from the brain.

There are two distinct parts of the central nervous system: gray matter and white matter. Gray matter in the brain refers to the thicker, outer layer, and white matter to the thinner, inner layer beneath.

It is possible for patients with elevated ICP to fully recover with prompt treatment.

Therefore, A medical emergency occurs when a person's internal pressure suddenly increases. An increase in intracranial pressure (ICP) may cause brain damage, seizures, comas, strokes, or even death if left untreated.

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What is MOST likely the reason why the author included the information about how mice responded to different types of
dust?

It’s for a test! i need help asap

Answers

To show us that humans may have the same reaction and respond to different things differently no matter how big or small the difference is

Answer:

oso it gives you detail and and tell you if the mice should go there or not. and what things they like and where they wouldnt go

Explanation:

bu dont gve me alot idetaiout the q so yeaaaal a

plss answer it’s due in 5 min

Answers

Answer:

No they do not because the traits they have don't depend on their lives its the health they have.

Explanation:

Answer:

It can, because if the animal take example a bear was born with traits of short legs and small claws, he won't be able to run as fast or do as much damage to the prey if it caught up. then the bear will have a small chance of surviving due to the lack of food

Explanation:

How has the discovery of Gram Staining

revolutionized how microbes are treated

Answers

Answer:

See the answer below

Explanation:

The discovery of Gram staining has revolutionized how microbes, especially bacteria, are classified. Bacteria that are positive for Gram staining are classified as Gram-positive while those that are negative to the procedure are termed Gram-negative.

What constitutes positivity or negativity to the Gram staining procedure is the ability of the cell walls of bacteria to either retain a dye or allow it to be washed off during the procedure. The components of the cell wall differentiate Gram-positive bacteria from the Gram-negative ones and confer the ability to retain dye on the former. Gram-positive bacteria have thick peptidoglycan cell walls and lower lipid contents as compared to the Gram-negative bacteria and with this, they are able to retain the color of the stain used during the Gram staining procedure.

During the Gram staining, a scoop of the bacterial isolate is usually smeared and heat-fixed to a glass slide. Thereafter, crystal violet drops are added to the slide, poured off, and then rinsed with water. A few drops of iodine are then added and allowed to stay for a few seconds before being poured off and rinsed. A decolorizer (an alcohol) is then added to the slide, allowed to stay for a few seconds before it is washed off. The addition of a counterstain follows and the slide is allowed to stay for another few seconds before the stain is washed off. The slide is then rid of water and then viewed under the microscope. A Gram-positive bacterium will able to retain the color of the dye which is purple while a negative bacterium will lose the color of the dye and appear red under the microscope.

what are the characteristics for induction?

Answers

what do you mean??????

What word is used to describe the presence of oxygen

Answers

Answer:

Explanation:

5%

Answer:

aerobic

Explanation:

DNA has _____ strands and mRNA has ______ strand of nucleotides

Answers

Answer:

DNA has 2 strands and mRNA has 1 strand of nucleotides.

DNA has 2 strands and mRNA has 1 strand of nucleotides.

Deoxyribonucleotides is simply referred to as the fundamental (basic) unit of a deoxyribonucleic acid (DNA).

Basically, deoxyribonucleic acid (DNA) comprises two (2) strands of nucleotides which are arranged in a double helix.

On a related note, a messenger ribonucleic acid (mRNA) refers to a molecule that is complementary to the template strand of deoxyribonucleic acid (DNA).

Hence, mRNA has one (1) strand of nucleotide and it is mainly used for the encoding of protein molecules.

In conclusion, deoxyribonucleic acid (DNA) has two (2) strands of nucleotides while messenger ribonucleic acid (mRNA) has one (1) strand of nucleotide.

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What field of forensic science involves examining evidence like blood or skin cells under a microscope?

Forensic anthropology
Forensic biology
Forensic psychiatry
Forensic sociology

Answers

Answer:

biology

Explanation:

Thats all about cells

Answer:

Forensic Biology

Explanation:

i dont know why the person above has 1 star he/she is correct

Carbon dioxide most likely enter the cell through which of the following processes

Answers

Answer:

Simple diffusion through the membrane

Explanation:

Oxygen and carbon dioxide move across cell membranes  simple diffusion, a process that requires no energy input and is driven by differences in concentration on either side of the cell membrane.

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little

Answers

The answer I believe is up or down motion.

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little up or down motion.
(Please Mark brainliest if correct )

What is the purpose of the cellular process

Answers

The correct answer is H. transcribing information in the DNA sequence for the use by the cell

Explanation

The process shown in the image is DNA transcription, this is the first procedure in gene expression. In this process, the information contained in the DNA sequence is transferred to the protein sequence using various RNAs as intermediaries. During this, DNA sequences are copied to RNA by an enzyme called RNA polymerase that synthesizes messenger RNA (maintains DNA sequence information for the use by the cell), so DNA transcription could also be called messenger RNA synthesis. According to the above, the correct answer is H. Transcribing information in the DNA sequence for the use by the cell.

Binding of ________________ to receptors (ligand-gated) on the sarcolemma at the neuromuscular junction is vital for depolarization of the muscle fiber.

Answers

Answer:

Binding of   ACh (acetylcholine)    to receptors (ligand-gated) on the sarcolemma at the neuromuscular junction is vital for depolarization of the muscle fiber.

Explanation:

It allows acetylcholine to be released into this synapse when an action potential hits a neuromuscular junction. Acetylcholine attaches to the nicotinic receptors localized on the post-synaptic membrane of the muscle fibre's motor end plate, a specialized region.

Hence , the answer is  ACh (acetylcholine) .

Where does photosynthesis occur?
PLS HELPP

Answers

Answer: Leaf

The leaf absorbs sunlight and carbon dioxide, and later on it produces oxygen for animals to breathe. Photosynthesis is the process of using the sun's energy to make energy for the plant.

While the two copies of a chromosome are
attached they are called

Answers

they are called “sister chromatids”

Answer:

here is your answer

sister chromatids

nothing. nothing. nothing.

Answers

Answer:

nothing at all.....

Answer:

Nothing + Nothing = Boredness

Explanation:

Mindblowing Lol

Which of the following kingdom includes algae?

Answers

Answer:

kingdom prpstimA

Explanation:

i believe

Which choice has eukaryotic animal cells?


oak


liver


Lactobacillus


virus

Answers

I think B I am not sure though. But if I was doing this I would probably pick B. Hope this helps :D

Answer: He's correct, liver.

Explanation:

This connects to my other questions and the data chart is there to the forelimb similarities one

Answers

Differences: Their basic anatomical structure became adapted for different habits and habitats.

They have different numbers of carpals, phalanges, and different lengths and shapes of bones. Plenty of ways, actually!

12. DNA in organisms cells

13. The organism may share a common ancestor.

14. Humans and dogs have similar shape and length of bones. You could also say dogs and whales have the same number of bones but that’s kinda a sucky observation.

Which of the following is NOT a necessary input for the process of cellular respiration? 1. CO2 (carbon dioxide) 2. Glucose 3. Sugar 4. O2 (oxygen)

Answers

Answer:

CO2

Explanation:

Hope this helps :)

CO2 (carbon dioxide) is NOT a necessary input for the process of cellular respiration.

What is cellular respiration ?

A series of chemical reactions known as cellular respiration break down glucose into ATP, which can be used as energy to power numerous body processes. Cellular respiration has three main stages: the citric acid cycle, glycolysis, and oxidative phosphorylation. The citric acid cycle takes place in the mitochondrial matrix, glycolysis takes place in the cytosol, and oxidative phosphorylation takes place on the inner mitochondrial membrane. Glucose, ATP, and NAD+ are the cellular respiration starting reactants, the rate-determining enzymes for cellular respiration are phosphofructokinase-1, pyruvate dehydrogenase, and isocitrate dehydrogenase, and the final products include ATP and water. One or more enzymes involved in cellular respiration, like succinyl-CoA-synthase or pyruvate kinase, are typically disrupted by diseases that affect this process.Glycolysis is the only process that can take place without oxygen, and only two ATP molecules can be produced for each glucose molecule. ATP and H2O are the two final end products of cellular respiration. Glycolysis produces two pyruvate molecules, four ATPs (a net of two ATP), two NADH molecules, and two H2O molecules.One acetyl-CoA, one NADH, and one CO2 are produced for each pyruvate molecule when oxygen is present. One GTP, three NADH, one FADH2, and two CO2 are the products of the TCA cycle. GTP is an energy-rich compound similar to ATP that is typically used in environments with lower pH. The electron transport chain can then use NADH and FADH2 to make more ATP as part of oxidative phosphorylation.

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what does nucleic acids have in common with carbohydrates and proteins

Answers

Answer:

proteins, nucleic acids ,and carbohydrates can form from all elements

Explanation:

Answer:

Carbohydrates have carbon, hydrogen, and oxygen in their structures.

Proteins have amino and carboxyl groups in their structures.

The nucleic acids have phosphate, sugar residue, and a nitrogenous base in their structures. It suggests that all these molecules are grouped on the basis of some common groups.

I GIVE BRAINLIEST!!
A thermos is used to keep liquids, such as soup or water, near a constant temperature for long periods of time. Which statement describes the function of a thermos?

A. to maximize thermal energy output

B. to minimize thermal energy transfer

C. to maximize thermal energy transfer

D. to minimize the use of environmentally
damaging materials

Answers

Answer:

B

Explanation:

Thermos keeps the thermal energy from escaping therefore it minimises it's transfer.

Hope that helped.

Answer:

B is the answer

Explanation:

Because thermos keeps the thermal energy from escaping therefore it minimises it's transfer.

Which phrase describes elevation?

the height of a feature above sea level
the distance of a feature above the clouds
the distance above the lowest point in the area
the height of a feature above the nearest mountaintop

Answers

pretty sure it’s “the distance above the lowest point in the area”

Answer:The height above sea level

Explanation: just did it

Which process allows ions to move across a semipermeable membrane from
where the concentration of the ions is low to a where their concentration is
even higher?
A. Diffusion
B. Osmosis
C. Passive transport
D. Active transport
SUBMIT

Answers

The process that allows ions to move across a semipermeable membrane from where the concentration of the ions is low to a where their concentration is even higher is active transport (option D).

What is active transport?

Active transport is the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

In biology, active transport moves molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration i.e. against the concentration gradient.

Therefore, according to this question, option D best describes the process that moves ion from a lower to a higher concentration.

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The process that allows ions to move across a semipermeable membrane from where the concentration of the ions is low to where their concentration is even higher is active transport.

The correct option is D.

What is active transport?

Active transport in cellular biology refers to the movement of molecules or ions across a cell membrane against the concentration gradient from a location of lower concentration to a region of higher concentration.

Cellular energy in the form of ATP is needed for active transport in order to achieve this movement.

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In which statement does the writer relay the main argument of the
passage?
A) Books and DVDs can be given new life as well.
B)
Also, consider donating items such as old musical
instruments, toys, furniture, and eyeglasses.
there are numerous ways to reduce, reuse, and
recycle that take just a bit of creativity and a little
extra initiative.
many Web sites offer users the option to list books or
D) DVDs that they have for trade in addition to books or
DVDs they want to receive in return.
Ok

Answers

Answer:

A. Books and DVDs can be given new life as well.

A should be the correct answer

Which statement is not an example of intercellular communication? A message travels between gap junctions. An electrical signal causes muscle cells to contract together. A molecule stimulates a target cell via a receptor. A message is distributed across plasma membrane.

Answers

Answer: D

Explanation:

A message distributed across a plasma membrane is not an example of intercellular communication. Therefore, option D is correct.

What is intercellular communication?

information that is transferred from one cell to another. Cells communicate with one another by making physical touch or by releasing a chemical that is subsequently absorbed by another cell. Cells must communicate with one another in order to develop and function appropriately.

Multicellular organisms use four different types of chemical signaling to communicate with one another: paracrine, autocrine, endocrine, and direct touch.

Examples of intercellular communication are when a message travels between gap junctions, an electrical signal, causes muscle cells to contract together, and a molecule stimulates the target cell via a receptor. Hence, option D is correct.

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What percent of the trees cut down are used for something other than paper?
35%
b. 45%
C. 55%
d 65%
Please select the best answer from the choices provided
OO *
B

Answers

Answer: Google says 65%.

Explanation: Resources that can help you with these problems can be found on Quizlet.

Answer:

D 65%

Explanation:

no explanation available

How does deforestation affect coral reefs?

Answers

The world's coral reefs are being damaged by harmful runoff, which new research shows is being caused by the clearing of forests. Preventing soil erosion may help protect the reefs, which shield coastlines from ocean waves, draw tourists with their brilliant colors and provide a habitat for fish.

For centuries, humans around the world have been clearing away forests to make room for livestock, farming, and other uses. Scientists say that when the forest cover is lost, soil washes away into rivers that flow into the oceans and, they believe, onto coral reefs.

That runoff adds nutrients to the ocean water. It's essentially too much of a good thing, and scientists have long suspected it can kill the coral. Runoff also clouds the water, blocking light from reaching the reef.

Answer: When the forest cover is lost, soil washes away into rivers that flow into the oceans and, they believe, onto coral reefs. That runoff adds nutrients to the ocean water.

Explanation: Basically, when this occurs, the roots are no longer attached to the soil, letting all the nutrients get ruined in the ocean water instead of feeding plants/animals/trees.

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Tendency of an object to float provide a simple explanation for water in nutrition (health). thanks :) You work in a hospital, and instructions for an instrument state that it should be cleaned in thesterilizer for two hours. The sterilizer requires cleaning time be entered in minutes. How manyminutes do you set for the sterilizer?A. 90B. 120C. 180D. 240E. 500 George, a musician, works 35 hours in a week. If he earns $18.15 per hour, how much does he earn each week? which two geologic events occur very slowly as a result of tectonic forces and movement.A. Destruction of forests B. Seafloor spreading C. Glacier formation D. Mountain range formation PLZZ HELPP!!! What effect do the words medieval, ancient, and primitive have on the reader? A. They demonstrate how charcoal is not appreciated in modern times. B. They suggest the long-lasting value of charcoal. C. They hint at scientific and industrial meanings. D. They demonstrate a high level of quality and efficiency. Complete with the correct possessive adjective.Yo tengo una hermana. ____________ hermana es rubia y tiene ojos verdes. formal charge of hcooh For which equations is 8 a solution. select 4 answersX+6=2X+2=10X-4=4X-2=102x=4 3x=24X/2=16X/8=1Please hurry im timed The dolphin dives 20 feet below the surface of the ocean. What is the dolphins elevation in feet? Rufus and Cody went from living in the country to living in the city. How would you feel If your parents decided theyd rather have a life on a farm than stay in the city any longer. What would your feelings be and why?AT LEAST 6 SENTENCEs WILL RECIEVE BRAINLIST AND EXTRA POINTS 1)What Is Cos(150) ,sin(150), tan(150) y=x+10 30x+20y=1000What is the solution to the system? How did the Aztec expand their empire Which of the following is NOT a role the president has in foreign policy?A) signs treatiesB) appoints ambassadorsC) declares warD) serves as commander-in-chief she remaining amount Lily has yet to pay Megan is $. Lily owed Megan $129.42. So far, she has paid Megan $32.56.????? pls answer these as quick as possible f(2)=3x^2-6x+2I need help!!! What is a short definintion of limited government Describe with AlgebraWhich of these statements is true? Select all that apply.(Select all that apply)The domain is all x-valuesThe domain is -4.2 The domain is -6The range is all y-valuesThe range is y2-4The range is -4 sys6