How is carbon dioxide added to the atmosphere?
Does anyone know these
5. How do bacteria contribute to an ecosystem? (1 point) Some bacteria reduce the number of parasites infesting organisms in an ecosystem. Some bacteria provide nutrients and raw materials for organisms in an ecosystem. Some bacteria are a primary food source for most of the consumers in an ecosystem. Some bacteria provide protection from viral infections for the organisms in an ecosystem. 6. Which of the following roles of bacteria is not a benefit to human bodies? (1 point) digesting food preventing diabetes making vitamins acting as a pathogen 7. Two ways bacteria cause disease is by using the cells of the organism they infect as food and by (1 point) making antibiotics. releasing toxins. releasing viruses. releasing disinfectants. 8. Antibiotics are often effective treatments for diseases caused by (1 point) bacteria. viruses. some bacteria and some viruses. all bacteria and all viruses. 9. What is one reason biologists have difficulty classifying proti
Bacteria contribute to ecosystems through nutrient cycles, symbiotic relationships, and reducing parasites. Some bacteria have beneficial roles in the human body, but others act as pathogens. Bacteria can cause diseases by using host cells as food and releasing toxins.
Explanation:Bacteria play important roles in ecosystems by contributing to nutrient cycles, providing food for consumers, and reducing the number of parasites in organisms. They can also form symbiotic relationships with other organisms, such as nitrogen-fixing bacteria living on the roots of legumes. However, some bacteria are pathogenic and can cause diseases in humans and other organisms.
In terms of the human body, bacteria can have both beneficial and harmful effects. Some bacteria aid in digestion, produce vitamins, and contribute to the development of the immune system. However, certain bacteria can act as pathogens and cause diseases.
Bacteria can cause diseases by using the cells of the organism they infect as food. They can also release toxins that harm the host organism. Antibiotics are often effective against diseases caused by bacteria, but not all antibiotics work against all types of bacteria.
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How do environmental factors contribute to evolution by natural selection?
How does increased soil enrosion affect the fish population in a forest after wildfire
The clearance of forests causes great impact on both the environment and humans. These include loss of nutrients availability, soil erosion, flooding, water pollution, hotter and drier weather conditions, global warming, as well as reduction in biodiversity.
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What would happen if the concentration of H ions were higher inside the mitochondrion than outside the mitochondrion when the channel opened
Answer:
If the concentration of H ions were higher inside the mitochondrion than outside the mitochondrion then the H ions would move to outside the mitochondrion to equalize the pH of both inner and outer side through the opened channel.
In mitochondria H ions usually move from mitochondrial matrix to inner membrane of mitochondria by active transport. This generates an electrochemical gradient due to the low pH in the mitochondrial membrane than in matrix.
This gradient allows the H⁺ to flow back into the matrix through ATP synthase which generates energy in the form of ATP and equalize the pH both the side.
Changes in a DNA sequence that affect genetic information are known as
A)expressions.B)hybridizations.C)intercalations.D)mutations.
Answer:
Mutations ( usatestprep )
What is the range for the following set of measurements? 27°C, 12°C, 31°C, 19°C, 23°C, 11°C, 17°C
Which factor can increase the potential energy of an object?
Decrease in speed
Decrease in density
Increase in temperature
Increase in height from the ground
You come to work one morning to discover the electricity has gone off in the refrigerator in the laboratory. This refrigerator houses the reagents needed to perform the laboratory tests and you have a full day of patients scheduled.
1. How will you proceed?
2. Is there a way to determine whether or not the reagents are still acceptable? Why or why not?
3. How could this have been prevented?
Which of the following processes transfers carbon directly from sea organisms to seawater? Diffusion Evaporation Photosynthesis Respiration
Answer:
i thought it was evaporation lol
Explanation:
When scientists take genes from one organism and combine it with another organism it is called _______________.
Question 8 options:
A) gene control
B) selective breeding
C) genetic engineering
D) Double helix
Answer:
im pretty sure its gene control
Explanation:
Which of the following icons is used to represent a female carrier of a disease?
A half-filled circle
A half-filled square
A completely filled circle
A completely filled square
which action can both humans and flatworms do?
a. form images from sensory signals
b. see the shape of an approaching predator
c. smell fresh food
d. communicate verbally
An action that can both humans and flatworms do is, to smell fresh foods.
What do you mean by Flatworms?Flatworms may be defined as an organism that belongs to the phylum Platyhelminthes and possesses soft-bodied invertebrate usually much-flattened acoelomate.
The sensory receptors of flatworms are not much developed due to a lack of spinal nerves. They are not able to communicate verbally as well.
Therefore, an action that can both humans and flatworms do is, to smell fresh foods.
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A bar magnet is a permanent magnet, while an electromagnet is a temporary magnet. Why is an electromagnet temporary?
Answer:
The magnetic field of electromagnets depend on current
Explanation:
An electromagnet is a temporary magnet because it do no have any inbuilt source of magnetism. The electricity flowing through it produces magnetic force and as soon as this electric force is removed , the magnetic force also vanishes.
Thus, the magnetic field of electromagnet depends on the potential for an electric field.
Wherever there is electricity, there is a magnetic field, and wherever there is magnetism, there is potential for an electric field.
An object that possesses a magnetic field and exerts a type of magnetic force are called a magnet. Magnets can be temporary or permanent based on their properties.
The difference between the magnet is due to the current.
What are bar and electromagnet?The flow of an electric current produces an electromagnet, the electromagnet remains working only when the current is flowing, when the current is turned off, the electromagnet loses its properties.
The material, coiling and the amount of current determine the nature of the electromagnet. While bar magnets are small magnets used for attracting metallic objects.
Therefore, an electromagnetic field relies on the potential of an electric field.
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The organism Euprymna scolopes is most likely related to
PLZ HELP SCIENCE HOW DID GENETIC ENIGINEERING HELP PPL WITH DIABETES
The lives of individuals with insulin-dependent diabetes have been improved by genetic engineering, which allows for the low-cost, large-scale production of human insulin, reducing allergic reactions and enhancing treatment effectiveness.
Genetic engineering has notably improved the lives of individuals with insulin-dependent diabetes through the development of recombinant DNA technology. This innovation allowed for the production of human insulin in E. coli bacteria, circumventing the previous reliance on pig insulin, which elicited allergic reactions in some patients due to slight differences in protein structure between human and pig insulin.
Since its initial development in 1978, the process has been refined to enable large-scale and low-cost production of human insulin. This advancement has made insulin therapy more accessible and reduced the risk of allergic reactions, thus improving the quality of life and treatment effectiveness for those managing their diabetes with insulin injections.
. You are exploring and observe some hardened sediment that contains the impression of a bone. This is an example of what type of fossil? (2 points)
A. Mold
B. Petrified
C. Imprint
D. Trace
Help with these five questions anyone it would be very helpful?
The overall direction of the major cold ocean currents is largely A) east to west. B) west to east. C) higher to lower latitudes. D) lower to higher latitudes.
Answer: C
The overall direction of the major cold ocean currents is largely from higher to lower latitudes. The currents flow in the high latitudes from the Polar region all the way to the lower latitudes in the warm Equator region where currents have lower surface temperature and bring cold water into warm water areas.
Answer:
The answer is "C"
Explanation:
Higher latitudes, which are closer to the poles, are colder than lower latitudes. Cold ocean water flows from higher to lower latitudes , as cold water moves in to replace rising warm water closer to the equator. The shapes of the continents also determine the actual paths of the currents.
The structure of an atom is best described as:
1. neutrons in orbit about a nucleus of protons bound to electrons.
2. electrons and neutrons in orbit about a nucleus of protons
3. protons and neutrons in orbit about a nucleus of electrons .
4. electrons in orbit about a nucleus of protons and neutrons
Answer: Option (4) is the correct answer.
Explanation:
An atom consists of three types of sub-atomic particles which are electrons, protons, and neutrons.
Protons have a positive charge and neutrons have no charge. Whereas electrons have a negative charge.
Protons and neutrons are placed inside the nucleus of an atom. On the other hand, electrons revolve around the nucleus of the atom.
Thus, we can conclude that the structure of an atom is best described as electrons in orbit about a nucleus of protons and neutrons.
which of these is a concern about the use of biotechnology
In which 3 organs does a plant store its starch in?
Answer:
The starch in non-photosynthetic tissues, such as seeds, stems, roots or tubers, is generally stored for longer periods and regarded as storage starch.
What would happen to seasonal temperatures if the tilt of the earth was less?
Answer: When the Earth is tilted toward the sun the Northern Hemisphere is in the warm season and when the Earth is tilted away from the sun the Northern Hemisphere is in the cool season. ... There would no longer be season as we know them. The temperature and precipitation pattern would not vary much.
Explanation:
At which temperature does the motion of atoms and molecules stop?
0°C
0 C
0°K
0 K
Answer:0 K
Explanation:
The motion of atoms and molecules stops at 0 K (zero Kelvin), which is the last option, as at this temperature, all matter would have zero entropy and no heat energy. However, it is impossible to actually reach absolute zero in reality.
what is 0 kelvin?The temperature at which the motion of atoms and molecules stops is known as absolute zero. It is equivalent to 0 kelvin (0 K), -273.15 degrees Celsius (-273.15 °C), or -459.67 degrees Fahrenheit (-459.67 °F). At absolute zero, atoms and molecules have no thermal energy, and they stop vibrating or moving. However, achieving absolute zero is practically impossible because it requires the complete elimination of all forms of energy, including all internal energy and the energy of motion. Scientists have been able to achieve temperatures very close to absolute zero, but not precisely at it.
Hence, the motion of atoms and molecules stops at 0 K (zero Kelvin), which is the last option, as at this temperature, all matter would have zero entropy and no heat energy. However, it is impossible to actually reach absolute zero in reality.
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Predict where the Katydid would hide from danger? Draw a picture of what you predict, help please
What is the main function of environmental policy? a. prevent the use of natural resources b. reduce human impact on the environment c. prevent nature from having a harmful effect on humans d. reduce the use of natural resources Please select the best answer from the choices provided
The correct answer is option B
The main agenda of environmental policy is to reduce the impact of human activities on environment. Human activities can adversely effect the environment.
This policy makes sure that there must be a healthy interaction between the environment and human beings.
It has some policy that has to be maintained by the human beings to reduce its effect on environment.
The main function of environmental policy is to reduce human impact on the environment by regulating activities that affect natural resources and ecosystems.
Explanation:The main function of environmental policy is b. reduce human impact on the environment. Environmental policies are developed and implemented by governments and organizations to protect natural ecosystems, manage natural resources sustainably, and mitigate the negative effects of human activities on the environment.
These policies can include regulations on pollution, conservation efforts for wilderness areas and fresh water supplies, managing fossil fuel reserves, and reducing atmospheric carbon dioxide to combat climate change.
The rationale behind such policies is to ensure a balance between economic development and environmental protection, thus safeguarding the planet for current and future generations.
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if a zygote has 4 chromosomes,the somatic cells formed from it have how many chromosomes?
If a zygote has 4 chromosomes, The somatic cells formed from it have how many chromosomes 4.
What are chromosomes?When a cell is not dividing, chromosomes cannot be seen in the nucleus, not even under a microscope. However, during cell division, the DNA that makes up chromosomes gets more compactly packed and becomes visible under a microscope.
The majority of what scientists understand about chromosomes comes from studying them during cell division.
The centromere, a point of constriction on each chromosome, separates the chromosome into its two "arms." The "p arm" refers to the chromosome's short arm. The "q arm" refers to the long arm of the chromosome. Each chromosome has a centromere.
Therefore, If a zygote has 4 chromosomes, The somatic cells formed from it have how many chromosomes 4.
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How canna person donate blood and never run out of it?
A)Blood componentes are continuously pumped by the heart.
B)Blood componentes are continuously circulated through the blood vessels.
C)Blood componentes are continuously produced in the bone marrow.
D) Blood componentes are continuously digested by enzymes.
What is one criteria that must be met in order for an ecosystem to be stable
A population of rodents becomes stranded on a remote island. Eventually, the population reaches the island’s carrying capacity. At this point, the birth and death rates are A. relatively equal. B. crashing. C. density dependent. D. density independent.
A population of rodents becomes stranded on a remote island. Eventually, the population reaches the island’s carrying capacity. When this happens the population growth curve becomes flat as shown in the image. At this stage the change in population becomes zero with time. The logistic growth curve for the population growth is given by the formula,
[tex] N_t = N_0 \times (1 + \frac{r-d}{k})^t [/tex]
Where, r is the growth rate, d is the death rate, and k is the carrying capacity.
When, [tex] N_t - N_0 = 0 [/tex]
[tex] N_0 \times (\frac{r-d}{k})^t = 0 [/tex]
[tex] \frac{r-d}{k} = 0 [/tex]
[tex] r = d [/tex]
The growth rate equals the death rate of the rodents.
The answer is (A).