The graph shows a population of rats in a forest habitat over a 10-year period.
The forest was a controlled environment, and no rats were allowed to enter or
leave the habitat.
Number of Rats (in thousands)
250
225
200
175
150
125
100
75
50
25
110
0+
30
2
3
76
45
Population
4
5
90
Year
200
100
6 7
30
29 27
8 9 10
Based on the graph, at which point is the death rate most likely greater than
the birthrate?
Answers
Answer:
100
Explanation:
there is a certain amount of food and resources to sustain a certain amount of individuals in a population. Since the individuals exceeds the amount of resources at 100,000 individuals you would usually see the death rate higher than birth rates to balance out the number of individuals to the number of resources so there is enough for all the individuals there.
Related Questions
An organ system is a group of organs that work together to perform _____ functions in a multicellular organism
Answers
Answer:
a certain functions
Explanation:
What is pasteurization, and how is it used?
Answers
Answer:
pasteurization is when any dairy product has each milk particle heating up above a certain amount. Pasteurization successfully removes any possible bacteria in the milk products effectively preventing Illness
When there are a lot of molecules in one place it is considered an area of:
Answers
When there are a lot of molecules in one place it is considered an area of high concentration. Details about concentration can be found below.
What is concentration?Concentration can be described as the amount of solute in a solution measured in suitable units.
The concentration of a solution is dependent on the amount of solute molecules in that solution.
A solution is said to have a high concentration if it has more solute molecules while a low concentration has less solute molecules.
Therefore, when there are a lot of molecules in one place it is considered an area of high concentration.
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On which part of the maintenance cycle do linux administrators spend the most time?
Answers
The part of the maintenance cycle the linux administrators spend the most time is monitoring system.
What is monitoring system?
A system monitor is a hardware or software component used to monitor system resources and performance in a computer system.
This computer hardware can be used by administrators to monitor system resources and performance in a computer system.
Thus, the part of the maintenance cycle the linux administrators spend the most time is monitoring system.
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Binary fission occurs when ____________ growth conditions are present.
Answers
Binary fission occurs when favourable growth conditions are present.
Binary fission can is an asexual type of reproduction that involves division of the cell into two identical cells. This type of asexual reproduction occurs in bacteria.
The favourable condition that are needed for binary fission include; water, temperature.
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Some animals that are scavengers can eat bacteria-laden meat that would harm humans. Which of the following best explains why these bacteria would harm a human, but not a scavenger?
The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues.
Only human cells have the complementary receptors that bind to surface molecules found on the bacteria.
Antibodies found in the blood of the scavenger destroy the bacteria as soon as they enter the bloodstream.
The pH and temperature environment in the human encourages more bacterial growth and colonization.
Answers
The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues. Thus, option "A" is correct.
How, explain your answer briefly?Animals that feed on meat might have an immune system adapted to it and strong enough to prevent bacterial infections before it produces toxins and damages tissues.
Some of these animals (beetles) spray the rotting meat with an antimicrobial substance produced by their own organism, before starting to eat.
Other animals, however, consume rotten meat and attack bacteria with stomach acid that is ten times more acidic than our stomach acid, which can eliminate a large part of bacteria, before they cause problems. However, some bacteria can survive and cause serious problems if we eat these animals.
Thus, option "A" is correct.
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Which statement best describes scientists who contributed to the current body of science knowledge
Answers
The appropriate choice must be (A).
What is the role of scientists in society?Science contributes greatly to the generation of knowledge and hence contributes to the operation of democracies, fosters innovation and allows countries to be competitive in the global economy.
The ongoing work of men and women from various nations throughout history has contributed to the existing body of scientific knowledge.
It is not simply wealthy men with money who could conduct experiments and get a scientific conclusion. We are all familiar with Marie Curie, who is renowned for her work in radioactivity and twice earned the Noble Prize.
Of course, advances in science have been accomplished before to the 20th century; for instance, Newton discovered gravity in the 17th century.
Therefore, the existing body of scientific knowledge is not constrained by specific limitations; rather, it is the result of ongoing efforts made by men and women from various nations throughout history.
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explain how training can heal a horse broken bone?
Answers
Training can heal a horse broken bone due to increased blood flow to the affected area.
What is Training?This involves the development of skills or body of an individual through programs or physical activities.
Physical activities ensure that the required nutrients in the blood reach and nourishes the bone which then helps in the healing process.
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describe sources of environmental variation ?
Answers
Answer:
they are climate, food supply, and actions of other organisms.
apa template about multiple sclerosis
Answers
Answer:
Multiple Sclerosis is an inflammatory disease in which myelin sheath of nerve cells of brain and spinal cord are damaged.
Explanation:
Cause:- (Exact cause of inflammation is not known)
But damage is caused due to attack by autoimmune cells or antibodies against myelin sheath.Types of tissues attack:-
Oligodendrocytes and myelin sheath is damaged and stripped away from axon and the process is known as demyelination.Myelin sheaths are made up of fatty tissues and help in transmission of electric impulse.Result of immune system attack:-
Damaged myelin sheath stop forming whIte matter of central nervous system.Hence disrupt coordinating communication between different brain regions.Signs and symptoms:- vary from person to person
Diminished eyesight.Disrupt motor coordination.Weak sensory perception.Fatigue and dizziness.Speech disorder.Muscle weakness and spasticity.Difficulty in urination and stool.Diagnosis and treatment:-
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Which correctly describes crossing over?
the process whereby non-sister chromatids exchange genetic material
the process whereby homologous chromosomes are pulled to opposite poles of the cell
the process whereby sister chromatids are pulled to opposite poles of the cell
the process whereby homologous chromosome pairs align randomly along the metaphase plate
Answers
The correct option is A ie the process whereby non-sister chromatids exchange genetic material
Between prophase I and metaphase I, a process known as crossing over occurs in which two homologous non-sister chromatids join up and exchange various pieces of genetic material to create two recombinant chromosome sister chromatids.When genetic material is switched between two chromosomes, this process is known as crossing over.It is in charge of causing genetic variation among members of a species.Only the reproductive cells known as gametes undergo this process.The steps involved in crossing over are as follows:1) Synapsis.
2) Chromosome duplication
3) Crossing over.
4) Terminalizataion.
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Answer: A.) the process whereby non-sister chromatids exchange genetic material
Explanation: trust
____________ is an instrument or other device that puts pressure on tissue, usually to stop bleeding.
Answers
Tamponade is an instrument or other device that puts pressure on tissue, usually to stop bleedings.
What is bleeding?Bleeding is defined as the leakage of blood from a blood vessel due to trauma or sharp cut.
Tamponade is an instrument used by medical personnel to arrest bleeding. The word tamponade is known as blockage or closure.
Therefore, Tamponade is an instrument or other device that puts pressure on tissue, usually to stop bleedings.
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What reduces friction around the lungs as they expand and contract?
Answers
The answer choice which reduces friction around the lungs as they expand and contract is; Choice C; Pleural fluid.
What reduces friction around the lungs as they expand and contract?A membrane with two layers, termed the pleura surrounds the lungs. A slippery liquid called pleural fluid acts as a lubricant to reduce friction in the space between those two layers, called pleural cavity during breathing.
Remarks:
A. Surfactant
B. Synovial fluid
C. Pleural fluid
D. Mucus
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Which best summarizes the flow of energy in a producer?
O Sun > ADP > muscle cells
O Sun > mitochondria > CoH1206
O Sun > chloroplasts > mitochondria
O Sun > mitochondria > chloroplasts
Answers
The correct answer to the given question is O Sun > chloroplasts > mitochondria ie. Option (C)
Chemical reactions are how energy moves through living things. One set of substances, known as reactants, are transformed into another set, known as products, during each chemical reaction.Such reactions take place in plants as a result of the sunlight-to-chemical energy conversion process, which powers plant growth and other operations.In particular structures known as chloroplasts, this process, referred to as photosynthesis, involves the combination of carbon dioxide and simple sugars to create more complex carbohydrates. The cells of plants, algae, and some protists include these membrane-bound organelles called chloroplasts.From one atom or molecule to another, electrons move. The relevance of these oxidation-reduction (or redox) reactions in mitochondria to living systems cannot be overstated.In this manner, molecules that carry energy are created and put to use for efficient energy transfer
Hence, the correct answer is O Sun > chloroplasts > mitochondria ie. Option (C)
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What data would meselson and stahl have expected if dna replication was conservative, rather than semiconservative?.
Answers
When excessive salt, chemicals, and other runoff enters local streams, what types of effects can this have on the ecosystems?
Answers
When excessive salt, chemicals, and other runoff enters local streams, it will have a negative effect on the ecosystems by causing pollution.
How does water pollution get into runoff?Pollution refers to the contamination of the air, soil, or water bodies due to the accumulation of contaminants as above described.
Runoff may lead to the accumulation of pollutants on the water and therefore it may have a negative effect on the ecosystem.
In conclusion, when excessive salt, chemicals, and other runoff enters local streams, it will have a negative effect on the ecosystems by causing pollution.
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Which of the following is a decomposer
A. Worm
B. Banana
C. Ferm
D. Wolf
Answers
Answer:
A
Explanation:
worms eat compost burried underground.
Certain preparations contain killed or weakened live biological agents that, upon injection into our body, protect the body against those pathogens. what are these preparations called? a. vaccines b. enzymes c. t cells
Answers
Mitochondria and chloroplasts
have their own DNA but no
organelles.
Mitochondria and chloroplasts are MOST SIMILAR to which type of cell?
A. root cells
b amoeboid cells
C. prokaryotic cells
Answers
Answer:
C. prokaryotic cells
Definitions
The Mitochondrion is an organelle in the cytoplasm of cells that functions in energy production.
Chloroplast is usually defined as a plastic containing chlorophyll.
Chlorophyll is the green coloring matter of leaves and plants, essential to the production in a bluish-black form, C55H72MgN405 (chlorophyll a), and a dark-green form, C55H70MgN4O6 (chlorophyll b).
A root cell is one of the maestro cells in the human organic structure that has possible ability of turning into any of the more than the organic structure's 200 cell types.
Prokaryotes is any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
What are the similarities and differences between prokaryotes, mitochondria, and chloroplasts?Both mitochondria and heterotrophic prokaryotes, as well as chloroplasts and autotrophic prokaryotes, have a genetic structure (DNA with a circular double helix shape and the genes themselves), as well as comparable ribosome types. In reality, the endosymbiotic idea is based on these parallels.
1. When mRNA moves out of the nucleus into the cytoplasm it attachs to another RNA
called rRNA, a protein assembly site referred to
Answers
mRNA moves out of the nucleus into the cytoplasm and attaches to another RNA called rRNA, a protein assembly site referred to as the ribosome.
What is Ribosome?This is referred to an organelle which is responsible for protein synthesis in cells.
The mRNA is used as a template for the rRNA to attach at this point to aid in protein translation and production. rRNA ensures that the appropriate amino acids are added and also form part of the ribosome which are involved in catalysis of the reaction.
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In the process of _________________________________ one sperm fertilizes the egg, and the other fuses with 2 gametophyte nuclei to form the first endosperm cell. This process occurs in gymnosperms and angiosperms.
Answers
Answer: in the process of polyspermy development
Explanation: in most cases the egg cell blocks polyspermy
Explain what causes menkes syndrome include in your answer the symptoms and life expectancy of the affected person
Answers
Answer:
Menkes disease is caused by a defect in the ATP7A gene. The defect makes it hard for the body to properly distribute (transport) copper throughout the body. As a result, the brain and other parts of the body do not get enough copper, while it builds up in the small intestine and kidneys. Menkes syndrome causes impaired copper absorption. This results in changes in the arteries and deterioration of the brain. Menkes syndrome is rare. Most children born with Menkes syndrome have a life expectancy of < 4 years.
Explanation:
Which statement provides an environmental reason to use renewable paper bags instead of nonrenewable plastic bags?
Answers
Answer:
it's not easy to destroy plastics if we use nonrenewable plastics u will have to throw them and they will become poison to the insets
This skeleton belongs to americon museum of natural history.find out the name of the animals to which this skeleton lelongs.does this animal still exist
Answers
Answer:
na the animal don't exist in today's life
Which of the following statements about Jesus's life is true according to the Bible?
A. Jesus was sentenced to death by crucifixion.
B. Jesus was born to a Jewish family in a Roman province.
C. All of the choices are correct.
D.Jesus was baptized by John the Baptist.
Answers
Answer:C
Explanation:A he was sentenced to death B he was born in a jewish family in the roman empire d he was baptized by John the Baptist.
Which of the following is NOT an example of pseudoscience?
Answers
Biology, Chemistry, Physics, and Medicine are not classified under the category of Pseudoscience.
What is Pseudoscience?Pseudoscience may be defined as a recommendation, a determination, or a method of illustration that is delivered as science but that lacks the severity important to the scientific approach.
Pseudoscience may always deal with the concept of recommendation methods which seems to be faulty and does not provide enough evidence to support the answer. Subjects like biology, chemistry, physics, etc. deal with the concept of scientific methods.
The complete question is as follows:
Which of the following is NOT an example of pseudoscience?
BiologyAstrologyChemistryPhysicsMedicine.Therefore, Biology, Chemistry, Physics, and Medicine are not classified under the category of Pseudoscience.
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Cartilage is separated from surrounding tissues by a fibrous.
Answers
Cartilage is separated from surrounding tissues by a perichondrium.
What separated the cartilage from the tissue?Cartilage is separated from the surrounding tissues by perichondrium. It consist of two layers i.e. Outer Fibrous Layer that provides protection, mechanical support. It also attaches the cartilage to other structures.
So we can conclude that Cartilage is separated from surrounding tissues by a perichondrium.
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According to the research, cartilage is separated from surrounding tissues by a fibrous perichondrium.
What is a cartilage?It is a specialized connective tissue that is devoid of nerves, blood vessels and lymphatic vessels.
These tissues allow the joints to move, protect the ends of the bones and act as a support against possible blows.
Therefore, we can conclude that according to the research, cartilage is separated from surrounding tissues by a fibrous perichondrium.
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Find the equation of the parabola with its focus at (6,2) and its directrix y = 0.
A) y = -1/4(x - 6)² + 1
Answers
The equation of the parabola with its focus at (6,2) and its directrix y = 0, is determined as y = 1/4(x - 6)² + 1.
Equation of the parabolaFocus at (6,2) and its directrix y = 0.
Focus equation is given as: (h, k + c) = (6, 2)
Directrix equation is given as: y = k - c = 0
so h = 6, k + c = 2, k - c = 0
Solve the system : k + c = 2 and k - c = 0
add the equations together: k + c + k - c = 2 + 0
2k = 2
k = 1
so k + c = 2,
1 + c = 2
c = 1
4c (y - k) = (x - h)²
4(1)(y - 1) = (x - 6)²
4(y - 1) = (x - 6)²
4y - 4 = (x - 6)²
4y = (x - 6)² + 4
y = 1/4(x - 6)² + 1
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What observations were you able to make after 24 hours? 48 hours?
Answers
Since this is biology and you are not saying what we are observing, I'm gonna choose water as the subject I'm looking at.
If you leave the water out for about 24 hours, the water will have many different kinds of bacteria. Same with the 48 hours, but there are more bacteria in it.
a housewife used excessive amount of sodium nitrate and phosphate fertilisers to her tree after 3 days she found her tree had withered and died
Answers
Answer:
It is due to the excess use of fertiliser
Explanation:
The phenomenon of exosmosis takes place and the plant has got withered and died