Answer:
C. Jobs
Explanation:
Demography is usually defined as the science of vital and social statistics, as of births, deaths, diseases, marriages etc. of populations.
This means that a demographer study both birth and death rates as they focus on human characteristics.
In demography, fertility is the birthrate of a population. Or in other words, the ability to produce offspring in a population. Mortality is the opposite of fertility; the death rate of a population. Both of these things are something that a demographer would study as they relate to the continuation of human society. Migration though, is a demographic process in which people migrate between different locations or places, resulting in a contribution to a population. So to explain the demographic terms, international migration takes an impact on a population with its age and size structure resulting in an indirect influence on the rate of future births in a population. This means that a overall, fertility, mortality, and migration all are therefore things that a demographer would study. After using process of elimination between the options, there is one left over, which is:
Option C - Jobs
Why is the sustainability of water for the future generations to come so important
Answer:
The sustainability of water for future generations is important because water is the source of life, the substance that enables all living things to survive and develop. Water is at the core of sustainable development and is critical for socio-economic development, healthy ecosystems, and for human survival itself. It is vital for reducing the global burden of disease and improving the health, welfare, and productivity of populations. Therefore, water must be sustained for future generations in order to protect and preserve the environment and to move towards a sustainable development model.
Explanation:
I hope this helps!
According to the theory of evolution by natural selection, which of these statements is correct?
A. Structures and behaviors evolve at the individual level.
B. Structures and behaviors evolve at the population level.
C. Structures evolve at the individual level, but behaviors evolve at the population level.
D. Structures evolve at the population level, but behaviors evolve at the individual level.
What do you call the system that categorizes organisms by using a naming system that includes the genus and species?.
Answer:
binomial system of nomenclature ....
Answer:
Binomial Naming System.
Explanation:
Scientists name animals and plants using the system that describes the genus and species of the organism. so they came up with the name "Binomial Naming System"
The sides of the dna molecule are made up of repeating nitrogen bases and sugars.
Answer:
BRAINLY
ME p l z
Explanation:
T or F - The sides of the DNA molecule are made up of repeating nitrogen bases and sugars. T or F - The letters that make up the DNA molecule code for genes. T or F - Replication results in two strands of DNA, each of which has half of the original strand.
Which statement accurately describes the tissues indicated by the line in the microscopic image?
The connective tissues that protect the inside of arteries and veins
The epithelial cells on the inside of arteries and veins
The smooth muscle on the outside of arteries and veins
can anyone help with this??
Answer:
50%
Explanation:
Dd Dd dd dd
25% + 25%
How does the ozone layer form?
Step 1:
Step 2:
Answer:
In the first step, ultraviolet sunlight breaks apart an oxygen molecule to form two separate oxygen atoms. In the second step, each atom then undergoes a binding collision with another oxygen molecule to form an ozone molecule.
What is the desired temperature for incubation?
Answer:
the desired temperature for incubation is between 99° and 100°F.
biologically term for: The green, light - tripping pigment in photosynthesis foundin plants leaves
Answer:
chlorophyllMost plants contain a special colored chemical or pigment called chlorophyll that is used in photosynthesis. Chlorophyll is what absorbs the sun's energy and turns it into chemical energy. Not all the light energy from the sun is absorbed. Sunlight has many different colors in it.
Explanation:
Hope it helps :)
Practice 2: which answer best describes another function of the
cell membrane?
a. the cell membrane helps to protect only plant cells from larger
molecules
b. the selective barrier allows small molecules to enter and exit in animal and plant cells
c. animals cells have as thick cell membrane to keep the cells rigid
d. the cell membrane keeps material from entering and exiting the cell
Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Explanation:
PLEASE HELP!!
Which statement describes how nuclear fusion and nuclear fission differ?
Answer:
The main difference is that fission is the splitting of a heavy, unstable nucleus into two smaller nuclei, while fusion reactions involve combining two light nuclei together.
Which of the following scenarios would likely happen if the phytoplankton population was greatly reduced
Answer:
Your answer is B: The population would increase.
Explanation:
Since the increased fish population would cause a decrease in the prawn population.
100 points!!!!!!!
Read Changes on Earth and Changes in Life. Explain how changes in Earth’s systems affect the growth of life on Earth. Use evidence from the text to support your answer.
Dont anwser if u dont know tysm
Geological Distribution- definition
Answer:
the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth.
Explanation:
hope this helped
Answer:
the natural arrangement and apportionment of the various forms of animals and plants in the different regions and locations of the earth.
Explanation:
you can search it up
46. Yawning may be caused by
A. high oxygen concentration in the blood.
B. high lactic acid concentration in the blood.
C. high carbon dioxide concentration in the blood.
D. high urea concentration in the blood.
By planting corn one year and beans the next on a given plot of land, or by planting alfalfa as a cover crop during the off-season, a farmer reduces the need for ___________ because beans and alfalfa fix nitrogen in the soil.
Such a planting pattern will reduce the need for nitrogen-based fertilizers.
Rotational croppingIt is a system of farming in which crops of differing characteristics are planted alternately in two consecutive seasons.
For example, planting corn this season and beans the following season is a kind of crop rotation.
By doing so, the need for nitrogen-based fertilizer is reduced because legume crops are able to fix nitrogen into the soil through the association of their root nodules with ceratin nitrogen-fixing microbes.
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Which statement best compares the relationship between photosynthesis and cellular respiration in plants?
A.
Photosynthesis produces glucose during daylight, and cellular respiration breaks down glucose during the day and night.
B.
Photosynthesis produces energy during the night, and cellular respiration uses this energy during the day.
C.
Photosynthesis releases oxygen during the night, and cellular respiration uses oxygen during the day and night.
D.
Photosynthesis releases energy from glucose during daylight, and cellular respiration stores energy as glucose at night.
Answer:
D.
Photosynthesis releases energy from glucose during daylight, and cellular respiration stores energy as glucose at night.
Explanation:
A taxon that includes a single common ancestor and all its descendants is a _____ group.
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monophyleticThe graphs show two types of
growth patterns. Which of the
growth curves best explains the sea
otter population growth?
Answer:
Where are the graphs?
Explanation:
The question is directing you to look at two graphs and compare them. Without the graphs this question cannot be answered.
List three different ways that bacteria are helpful to human
Answer:
Creating products, such as ethanol and enzymes.
Making drugs, such as antibiotics and vaccines.
Making biogas, such as methane.
Cleaning up oil spills and toxic wastes.
Killing plant pests.
Transferring normal genes to human cells in gene therapy.
Explanation:
Answer: Heyaa! ~
1. Help digest food
2. Makes vitamins
3. Cleaning up oil spills and toxic wastes.
Hopefully this helps you!
-Matthew ^^
PLEASE HELP! WILL GIVE 20 POINTS
individual species with which of the following characteristics would be most likely to survive according to Darwin?
a the smallest number of offspring
b variations best suited to the environment
c characteristics their parents acquired by use and disuse
d undergone mutations
Answer:
B
Explanation:
If variations are better suited to the enviro, you are more likely to thrive
Variations best suited to the environment, is the characteristic that would be most likely to help a species survive according to Darwin's theory. Therefore, option (B) is correct.
What is Darwin's theory?According to Darwin's theory of evolution by natural selection, individual species with variations best suited to the environment are most likely to survive and pass on their advantageous traits to their offspring. This is because individuals with beneficial traits are more likely to survive and reproduce, passing on those advantageous traits to their offspring, leading to the evolution of the species over time.
The other options are not necessarily advantageous for survival. For example, having the smallest number of offspring (option A) may not necessarily be an advantage in all situations, and characteristics acquired by use and disuse (option C) are not inherited and therefore cannot be passed on to offspring. Mutations (option D) can be beneficial or harmful, and their survival depends on their effect on the organism's ability to survive and reproduce in their environment.
Therefore, option B, variations best suited to the environment, is the characteristic that would be most likely to help a species survive according to Darwin's theory.
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IANADADisdfiodpcamscayduaefasiouoias.
Answer:
The producers (plants) would be greatest in number and the tertiary consumers (carnivores) would be least in number. Because energy available to higher trophic levels decrease as we go higher.
What does Tay-Sachs disease cause?
A. the inability to breakdown fatty tissues around the brain and effects the brain's abilities
B. the wrong shape of hemoglobin and therefore less oxygen in the body
C. a thick layer of mucus in the respiratory tract and struggle to digest food
D. a decreased mental ability and uncontrollable movements
Answer:
A.
Explanation:
It's caused by the absence of an enzyme that helps break down fatty substances. These fatty substances, called gangliosides, build up to toxic levels in the brain and spinal cord and affect the function of the nerve cells
Sponges possess feeding cells and structural parts that are called.
Answer:
choanocytes (“collar cells”).
Explanation:
The structure of a choanocyte is critical to its function, which is to generate a directed water current through the sponge and to trap and ingest microscopic food particles by phagocytosis.
Why do viruses only infect specific types of cells?.
Select the correct answer.
Historically, the earth's ocean had a pH of 8.2. In recent years, it has dropped to 8.1. How might this change affect the ocean environment?
OA. The skeletons of coral will become soft due to increased acidity.
OB. The rise in alkalinity will make the ocean unfit for certain ocean plants.
Oc At 8.1, the ocean has reached neutral pH, making it identical to pure water.
OD. The ocean's CO2 content will decrease, improving the environment for animals.
The effect of this change of pH value in the ocean environment will be experienced by: (A). The skeletons of coral will become soft due to increased acidity
Meaning of pH value
pH value can be defined as the values that tells us how acidic or basic a mixture is.
pH is the measure of how acidic or how basic water is.
pH values ranges from 1-14, and each has its own significance. number 7 stands for the neutral point.
In conclusion, The effect of this change of pH value in the ocean environment will be experienced by: The skeletons of coral will become soft due to increased acidity
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Golden rice is a transgenic plant.
Which choice best describes how rice was modified to create golden rice?
A. Rice was bred to select for individuals with increased vitamin A production.
B.Genes from daffodils were added to rice that code for increased vitamin A production.
C.Genes from rice plants that coded for increased vitamin A production were inserted into other rice plants.
D. The rice genome was modified to activate a gene for vitamin A production.
The choice that best describes how rice was modified to create golden rice is genes from daffodils were added to rice that code for increased vitamin A production.
What is a transgenic organism?A transgenic organism is an organism whose genome has been changed by the addition of a gene from another species.
Transgenic organism is formed as a result of the process of genetic recombination to produce organisms with better traits.
Therefore, the choice that best describes how rice was modified to create golden rice is genes from daffodils were added to rice that code for increased vitamin A production.
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Which type of rock contains minerals arranged in crystals and forms when molten rock cools and turns solid?
A. sedimentary rock
B. metamorphic rock
C. fossilized rock
D. igneous rock
Pernicious anemia is most common in older people. Which choice lists the correct relationships among the factors that cause this disorder?
Pernicious anemia is most common in older people as The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and macrocytes are produced instead of erythrocytes.
What is Pernicious anemia?Pernicious anaemia is the maximum not unusualplace motive of nutrition B12 deficiency. Pernicious anaemia is an autoimmune circumstance that influences your belly. An autoimmune circumstance manner your immune device, the body's herbal defence device that protects towards contamination and infection, assaults your body's healthful cells.
As human beings get older, their cappotential to take in nutrition B12 decreases. This is due to the fact ageing adults regularly broaden issues with the acids and belly enzymes had to method the nutrition.
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Why are scientific observations important?
1. Every experiment uses quantitative observations.
2. Every experiment begins with observations.
3. Every experiment ends with observations.
4. Every experiment uses qualitative observations.
Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
Why are scientific observations important?Scientific observations are used by scientists to collect and record data, which allows them to put forth and test certain hypotheses and theories.
Scientific observations are done in many ways – by human senses or with machines and tools like microscopes, digital scanners or amplifiers to enhance their vision or hearing.
Observations make what scientists call data and they inspire, support or deny a scientific theory or hypothesis.
Hence, Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
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Answer:
every experiment begins with obeservation
Explanation:
