Use the four population pyramids above to answer the question. Which country's population is
significantly decreasing? Sb
O Brazil
O Japan
O Afghanistan
O US
Answers
Related Questions
A biologist was in a forest when he came across a family of squirrels hiding nuts for
the winter. The biologist was interested in this behavior, so he stayed and watched the
squirrels for a few hours. He recorded what he observed in a notebook. Which of the
following explains why this type of research is NOT considered an experiment?
O The biologist did not observe the squirrels for long enough to collect data.
The biologist did not collect valid data on the different species of squirrels present.
O The biologist observed the squirrels and did not test variables.
O The biologist came across the squirrels by chance and had no formal plan.
Answers
Answer:
biologist observed the squirrels and did not test variables
Explain how scientists foresee the fuel being used?
Answers
Answer:When biomass is harvested and processed, scientists can break down and convert the plant cells into renewable fuels or chemicals.
Explanation:
Deana is studying the table shown here, which lists the birthrate and death rate for several countries.
Country Birthrate
(per 1000 People) Death Rate
(per 1000 People)
Brazil 14.7 6.1
Cambodia 24.1 6.1
Italy 8.3 9.8
Mali 43.5 10.5
Venezuela 19.6 5.5
Deana applies the data in the table to calculate the rate of population increase or decrease of each country.
Which assumption is necessary for Deana’s calculations to be accurate?
A. The immigration and emigration rates of the countries are insignificantly small or approximately equal.
B. The immigration rates of the countries are much higher than the emigration rates.
C. The immigration rates of the countries are much smaller than the emigration rates.
D. The population is evenly distributed between rural, suburban, and urban areas.
Answers
In order to use only the birth and death rates to calculate the rate of population growth or decrease of a country, the immigration and the emigration rates must either be insignificant or approximately equal.
Population growth rateThe growth rate of a population is determined by the following equation:
Growth rate = (Birth rate - death rate) + (Immigration - Emigration)
Thus, if immigration is more or less equal to emigration or both factors are insignificantly small, the difference between the birth and death rates can be used to estimate the population growth.
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Mary loved having her goldfish tank in her office. She said watching the fish swim around was calming to her on stressful days. Mary thought that if 2 goldfish in her tank could make her less stressed then certainly 8 goldfish would be even better. After three days of having 8 goldfish in her tank, she noticed 5 of the fish began to sink to the bottom of the tank becoming less active than the remaining 3. A few days later the 5 sick fish died and the 3 remaining fish thrived. Use the data to help you choose three reasons the carrying capacity of the fish tank wasn’t able to accommodate all 8 goldfish.
A.
There was a limited supply of food available to sustain all 8 fish.
B.
There was an unlimited amount of space for the fish to swim.
C.
The amount of dissolved oxygen in the tank was not replenished quickly enough to sustain all 8 fish.
D.
The ammonia levels in the tank did not compromise the life of the fish.
Answers
Answer:
A
C
D
Explanation: Because since C is not right, we can immediately assume that the rest are the answers. It says that 3/4 are right, so it would be ACD, also they make sense.
Select the correct answer.
What pollutant does this image convey?
A.
methane
B.
black carbon
C.
HFCs
D.
a persistent organic pollutant
E.
tropospheric ozone
Answers
Answer:
A persistent organic pollutant
Explanation:
POPs (Persistent organic pollutants) is what how we name the organic compounds that are resistant to the environmental degradation through biological, chemical, and photolytic processes. Some organic pesticides are the most widespread Persistent organic pollutants used in agriculture worldwide.
Of the four animals (human,cat,whale,bat) which would you argue are the most closely related on the evolutionary tree?Justify your answer
Answers
Answer:
I think humans and whales are closely related on the evolutionary tree because they are both mammals and both have endoskeleton
Which statement best compares chromosomes and genes in humans?
Each human cell contains 23 pairs of chromosomes, while each human cell contains thousands of genes.
Chromosomes determine a human's traits, while genes determine a human's lifespan.
Chromosomes in humans are used for protein synthesis, while genes are used in cell communication.
Human chromosomes are protected from mutations, while genes are vulnerable to mutations.
Answers
Answer:
The first is the correct and if it is wrong you can use the explanation and you will know the answer
Explanation:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus
the answer is: Chromosomes in humans are used for protein synthesis, while genes are used in cell communication.
Human chromosomes are protected from mutations, while genes are vulnerable to mutations.
RNA is made because DNA is always in the nucleus,but ribosomes for making proteins are found in the _______
Answers
Answer:
Cytoplasm
Explanation:
In eukaryotes, there is a definite nucleus where the ribosome and mRNA production takes place. The ribosomes and mRNA come out of the nucleus into the cytoplasm where the ribosomes work upon and catalyze the formation of proteins. Meaning that in eukaryotic cell, ribosomes make proteins in the cytoplasm.
Explanation:
Ribosome existed in the rough endoplasmic reticulum and existed freely in cytoplasm
Who enunciated the inverse square law of electrical attraction
A. James Watt
B. Robert Boyle
C. Joseph Priestly
D. James Maxwell
Answers
NO LINKS AND NO FAKE ANSWERS. Rather than push a heavy box from one room to another, a worker chooses to place the box on a wheeled cart. In terms of friction, explain why moving the box on the wheeled cart is easier than pushing.
Answers
Answer:
The reason why that pushing something on a cart is easier than pushing it around without a cart is very simple actually. Pushing something on a cart is much easier because there is a much smaller act of friction. This results in a smaller strain on the body.
Explanation:
There isn't really a need for an explanation because it's that simple. I don't blame you for not knowing it though. People don't know everything.
Plasmolysis of bacteria in foods occurs when high concentrations of salt or sugar are added to the foods creating a
Answers
Plasmolysis of bacteria in foods occurs when high concentrations of salt or sugar are added to the foods creating a hypertonic environment.
What happens in the netlike structure labeled B in the diagram?
(A) Carbon dioxide and oxygen diffuse into the blood
(B) Nitrogen and oxygen are exchanged,
(C) Carbon dioxide and oxygen are exchanged,
(D) Nitrogen and carbon dioxide remain constant,
Answers
List the types of enzymes made in the salivary glands, the stomach, the pancreas and the small intestine.
Answers
Answer:
Lipase breaks down lipids, which are fats and oils, into glycerol and fatty acids.
Amylase. Amylase is produced mostly in the pancreas, but also in the salvary glands and small intestine. ...
Protease. Protease is produced in the stomach, pancreas, and small intestine. ...
Lipase.
Explanation:
Answer:
amylase, lipase, protease, and nuclease.
Explanation:
The main categories of enzymes are amylase, lipase, protease, and nuclease. Glands in the mouth, stomach, small intestine, and pancreas secrete some or all of these as food passes along the digestive tract so that it may be broken down and used by the body.
I have to answer these questions with these graphs made how do i answer them
Answers
Answer:
A line graph is also used when there are two variables—but only makes sense when you're tracking changes over a continuous measurement (e.g., time, temperature, distance). Line graphs are especially useful for illustrating direction (i.e., peaks and dips) rather than magnitude.
Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.
did the air pockets in the bird bone affect the strength of the bone
Answers
Answer:
The pneumatization of avian bones allows them to be much more efficient with respiration and provide an extraordinary amount of strength compared to their weight. This connection of air sacs to the bone does cause some complications if the bone is damaged or broken.
When a group of proteins such as interferons and interleukins are released by the t cells, intercellular signals begin the immune response, what is the medical term used for the group of proteins?.
Answers
The cytokine describes the group of proteins such as interferons and interleukins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.
What is a cytokine?They are messenger molecules with a glycoprotein structure, whose lifetime is short and generally secreted in cascades.
They are produced by different activated cells, responsible for innate and/or acquired immunity, and regulate the immune and inflammatory response.
Therefore, we can conclude that the cytokine describes the group of proteins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.
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Region Safety Index
higher is
better
Health Care
Index
higher is
better
Pollution
Index
lower is
better
Climate
Index
higher is
better
A
75.87
75.69
26.24
88.81
B
45.00
70.51
61.24
85.63
с
78.65
84.47
20.09
90.05
D
50.80
72.99
41.79
87.94
Use the quality of life graph above to rank regions from HIGHEST TO LOWEST quality of life
(highest first and lowest last). Sa
OD, C, BA
O A, B, C D
O B, D, C, A
O C, A, D,B
Answers
The ranking of regions from high to low life quality is: O C, A, D,B since these regions show a gradation from highest to lowest in the indices of quality of life.
What is quality of life?The quality of life is a measure how comfortable life is for individuals and how the living environmental conditions of a place which can contribute to either the prolonging or reduction of the lifespan of individuals.
The indexes for measuring quality of life include:
Region Safety Index - higher is betterHealth Care Index - higher is betterPollution Index - lower is betterClimate Index - higher is betterBased on the indices of quality of life and the data given, the ranking of regions from high to low life quality is: O C, A, D,B.
Learn more about quality of life at: https://brainly.com/question/24486192
Hi I know this is quite a few question but I really need help, Thanks!
Answers
3: B
4: B
5: C
6: C
7: A
8: C
9: C
10: D
11: B
12: D
Sorry for the late responce, I was on holiday !! (▱˘◡˘▱)
10. Maltose is a disaccharide formed by condensation of two molecules of glucose. Which of the
following statements is not true of a molecule of maltose?
a. It contains the same number of carbon atoms as a oxygen atoms.
b. It contains twice as many carbon atoms as a molecule of glucose.
c. It contains twice as many hydrogen atoms as oxygen atoms.
d. It contains more hydrogen atoms than carbon atoms.
What it will be ?
Answers
Answer:
The correct answer is A.
Explanation:
The chemical formula for maltose is C12H22O11. That means there are 22 carbon molecules, 22 hydrogen molecules, and 11 oxygen molecules. You can see that A is untrue because 22 is not equivalent to 11. Meanwhile, all other statements are true.
Hope this helps! :)
Answer: its B
Explanation:
just answered on e2020
The black-footed ferret lives on the grasslands of North America. The species is endangered because of habitat loss and disease. What change would cause the species to become extinct?
A. Habitat loss continues to such an extent that the carrying capacity for black-footed ferrets becomes zero.
B. Disease continues to kill a constant percentage of all black-footed ferrets during the first year of life.
C. The black-footed ferret population decreases until the birthrate equals the death rate.
D. The black-footed ferret population decreases low enough for other limiting factors to affect it.
Answers
Answer: A is the answer
Explain why most humans require a supply of glucose.
Answers
Answer:
Nerve cells and chemical messengers there need it to help them process information so basically without it your brain wouldn't be able to work well
Explanation:
Most humans require a supply of glucose because Nerve cells and chemical messengers they need it to help them process information. Without it, your brain wouldn't be able to work well.
Why do we need glucose everyday?
Glucose provides energy for physiological processes such as respiration, heart rhythm and the regulation of body temperature.
Why is glucose required in the cell?
Glucose provides quick energy for cells. Fat has more energy than glucose, but it requires some chemical conversions before we can get it into the process of cellular respiration, so it takes longer to use.
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Blood passes from the right ventricle to the _____ and then the _____ before reaching the lungs to pick up oxygen. Multiple choice question.
Answers
Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery before reaching the lungs to pick up oxygen
Blood circulation procedureWhen the blood enters the right ventricle it contracts and sends the blood through the Pulmonary valve before it reaches the Pulmonary artery which is passes the blood to the Lungs where it becomes oxygenated.
Hence we can conclude that Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery before reaching the lungs to pick up oxygen.
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2. Bacteriophages are
a. a form of bacteria.
b. enzymes.
c. coils of DNA.
d. viruses.
Answers
Answer: (d) viruses
Explanation:
Bacteriophage is a type of virus that infects bacteria.
Single-celled plantlike protists and photosynthetic bacteria make up communities of.
Answers
Plant-like protists, also called algae are a large and diverse group of simple plant like organisms. Some algae are tiny and unicellular, others are large and multicellular, as shown in Figure below. The largest and most complex marine forms are called seaweeds.
Leaves falling from a tree ,what is explanation
Answers
Explanation
~ Cliché as it may sound, leaves falling from a tree is caused by the gravity of the Earth.
GRAVITY~ Gravity is one of the reason and the driving force that made the universe possible. It is the entity that enables the sun to hold planets together in the solar system; the reason why Earth is revolving around the sun just like the moon orbiting the Earth.
~ Gravity has to do with everything on Earth -- leaf falling from the tree, ball bouncing up and down, ocean waves, and stalactites facing downwards.
Picture showing the gravitational relationship of Moon and Earth.
Ezzzzzzzzzzz
Creatinine has a renal clearance of 140 ml/min. Why is this?.
Answers
Answer:
It is secreted by the renal tubules
Explanation:
A series of measurements with a voltmeter show a neuron's membrane potential becoming more negative, from -70 mV to -85 mV. This neuron is experiencing
Answers
If the voltmeter shows a neuron's membrane potential becomes more negative, from -70 mV to -85 mV, then the neuron is experiencing a hyperpolarization phase.
What is the hyperpolarization phase?The hyperpolarization phase is a stage in which potassium channels remain open while sodium channels need to reset.
This causes a change in the voltage inside the cell, which triggers a concomitant response.
The period of hyperpolarization is inversely opposite to the depolarization state of the neuron.
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True or false: It is possible to predict the sequence of one strand of DNA if we know the sequence of the complementary strand.
Answers
Answer:
TRUE
Explanation:
Please help. This in an crossword puzzle.
Answers
Media convergence is the result of the integration of the different media technologies. please select the best answer from the choices provided t f
Answers
Media coverage is used for different blogs, feeds, video content etc. It is the result of the different media technologies.
What are the types of media coverage?Like other works, media coverage is also require very hard work and risk accepting skills. Media coverage can have 3 types. They are:
Owned coverage: this is the coverage of one's own media.Paid coverage: this type of coverage include promotional events.Earned coverage: it includes unpaid coverage from other source.Thus, the given statement is true.
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Answer: true
Explanation:
