Which of the following is a major problem with using geothermal?
A. It is not cost-effective
B. It is not a readily available power source for all
C. It generates more thermal pollution
D.I will these are problems with geothermal energy usage
The major problem with using geothermal energy is it is not a readily available power source for all.
What is geothermal energy?In literal meaning -‘Geo' means Earth and 'thermal' means heat."It is a type of renewable energy (geothermal is present in the form of heat) taken from the Earth's core."The energy that is inexhaustible or can get renewed at very fast pace is called renewable energy. Example: solar energy, wind energy, geothermal energy, etc."The heat that remains in the interior part of Earth since the time of its formation and radioactive decay of materials, is used to generate electricity."It does not pollute the environment.It also does not release greenhouse gases. That's why, it does not cause climate change.It is available near the Earth's interior surface and it is location specific i.e., it is not located in all areas rather it is found in limited areas.Hence, the correct option is: B. It is not a readily available power source for all.
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Asthma is a disease of the lungs that affects the bronchial tubes. Asthma attacks can be triggered by smoke, pollen, exercise, and cold air. When exposed to a trigger, the smooth muscle rings in the bronchial tubes become constricted and inflamed. The image below shows a healthy bronchial tube and one from a person during an asthma attack. How would an asthma attack most likely affect oxygen delivery in the body? A. Oxygen delivery would be decreased due to a decrease in blood flow. B. Oxygen delivery would be decreased due to a decrease in air intake. C. Oxygen delivery would be increased due to an increase in blood flow. D. Oxygen delivery would be increased due to an increase in air intake.
The answer is actually "Oxygen delivery would be decreased due to a decrease in air intake." (B)
One, I have asthma, and two, I got this question right on the test xD
Answer:
B. Oxygen delivery would be decreased due to a decrease in air intake.
Explanation:
Asthma is a chronic disease caused by inflammation of the bronchi. Such inflammation causes airway closure, which causes decreased air intake in the body and ends up impairing breathing due to reduced oxygen delivery. Its symptoms are: dry, irritating cough, wheezing, chest discomfort and shortness of breath. With this we can state that the correct answer to your question is the letter B.
Asthma is one of the most common respiratory diseases worldwide. There are at least 300 million people with asthma worldwide and a mortality rate that reaches 250,000 patients per year.
Claire, an ecologist, is finding it difficult to identify an interaction in nature because of changing environmental conditions and the complex indirect interactions of multiple species. Which interaction is Claire trying to find in nature?
A.
interference competition
B.
apparent competition
C.
exploitation competition
D.
predation
E. symbiosis
Answer:
The correct answer is option C, that is, exploitation competition.
Explanation:
The competitions can be classified usually into two on the basis of the mechanism taking place, that is, the exploitation competition and interference competition. The competition among the organisms is indirect in case of exploitation competition, while in opposition to it is interference competition wherein in the association between the competing species is direct. However, though the interaction is not direct, the competition between the species in exploitation competition leads to depletion of the resources, thus, restricting the accessibility of the resources for other species.
Answer:
B. apparent competition
Explanation:
for plato
Which organelle forms the surface of a cell separating its content from the outside world?
cell membrane forms the surface of a cell to protect it from the outside world.
Cell membrane is the organelle forms the surface of a cell separating its content from the outside world.
Explanation:It is outer most layer of cell which is a barrier for molecules and ions freely floating outside to enter the cell.It is usually made up of lipid bilayer with some proteins embedded in it.The lipid layer made it hydrophobic which repels water content from both sides.Water content (cytoplasm ) of cell remains in cell due to cell membrane.The activity of k 40 in a 70 kg human body is estimated to be 120 nci what is this activity in becquerels
The activity of a sample is determined in terms of the number of nuclear disintegrations in a second. The Curie or Ci is a common unit for activity measurement. Bq or Becquerel refers to the SI unit for radiation activity measurement.
The activity of K-40 in 70 kg human body is 120 nCi
The relationship between Curie and Becquerel are as follows:
1Ci = 3.7 × 10¹⁰ Bq
1nCi = 37 Bq
Thus, 120 nCi × 37 Bq / 1nCi = 4.4 × 10³ Bq.
Hence, the activity of K-40 in a 70 Kg human body is 4.4 × 10³ Bq .
The activity of K-40 in a 70 kg human body, given as 120 nCi, is equivalent to 4.44 × 10⁴ becquerels when converted using the appropriate conversion factors.
Explanation:The activity of K-40 in a 70 kg human body is estimated to be 120 nCi. To convert this activity to becquerels, we use the conversion rate where 1 Ci = 3.70 × 10¹⁰ Bq. Therefore, we first convert nanocuries (nCi) to curies (Ci) by dividing by 1 billion (since 1 nCi = 10⁻¹ Ci), and then multiply by the conversion factor.
Here is the step-by-step conversion:
Convert the activity from nanocuries to curies:The activity of K-40 in a 70 kg human body is therefore 4.44 × 10⁴ becquerels.
There was a body found at the crime scene on Willow Lane. Early in the investigation, the temperature of the internal organs needs to be measured in an attempt to determine _____.
how the person was killed
time of death
whether the person died due to a infectious disease
the general routine at any crime scene
the time of death because if a person is still warm the death happened recently but if the person is cold it most likely happened awhile back
Why do weather reports always emphasize cyclones and anticyclones?
Bc they are both names, which grammerly u will “ the proper titles
Which two elements are always found in amino acids?
A nitrogen and sulfur
B carbon and oxygen
C hydrogen and phosphorus
D sulfur and oxygen
Well let's see, amino acids are part of the Protein bio molecule, which has carbon, oxygen, hydrogen, and nitrogen. Since amino acids are the monosaccharide, you can cross off A, C, and D.
Amino acids are organic compounds that must contains carbon and oxygen. Option B is correct.
Amino Acids:
These are organic compounds that contains an amino group and a carboxylic group along with a side chain. They bond by the peptide bond to form proteins.
Such as - Alanine composed of a chiral carbon with amino, and carboxylic group and an methyl side chain.
Organic compounds are those compound that has Carbon, oxygen and Hydrogen.
Therefore, amino acids are organic compounds that must contains carbon and oxygen.
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PLEASSEE HELP I WILL GIVE 20 POINTS no wrong answers pllzz
If water with the mass of 15.0 grams is heated into water vapor in a closed system such as a closed glass jar, what is the mass of the gas after the water completely vaporizes?
A) 13.5 grams
B) 15.0 grams
C) 16.5 grams
D) The mass cannot be determined without knowing the volume.
The mass of the gas after the water completely vaporizes is 15.0 grams. The correct option is B).
What is thermochemistry?The field of chemistry known as thermochemistry studies the qualitative and quantitative changes in energy that take place during chemical reactions.
A subfield of thermodynamics, known as thermochemistry, studies the connections between heat, work, and other types of energy produced by various chemical and physical processes. A chemical reaction results in energy changes, which is the definition of thermochemistry.
The pressure that is applied to the walls of a sealed container when a chemical inside of it evaporates is known as vapor pressure in chemistry (converts to a gas)
Therefore, the correct option is B) 15.0 grams.
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Which situation would be most likely to cause a DNA mutation? A. A wood frog in a lake is exposed to temperatures below 0°C during the winter months. B. A person spends one hour each day under the ultraviolet rays of a tanning bed. C. A culture of cells is placed in a chamber and exposed to high pressure for 10 hours. D. A maple tree becomes dormant to prevent water loss during a drought.
The correct answer is: B. A person spends one hour each day under the ultraviolet rays of a tanning bed.
The relationships between ultraviolet (UV) light and skin cancer are highly positive because it has been shown that indoor tanning bed use represents an avoidable risk factor for melanoma and non-melanoma skin cancer. UV light is a form of radiation that causes mutations in DNA by causing the chemical changes that alter the shape of the DNA. So, UV light is a potent mutagen and thus, tanning bed (source of UV light) can cause damage to the DNA in the surface layer of your skin after repeated or prolonged exposure. This might increase the risk for skin cancer.
I just took this test recently and the answer is:
B - A person spends one hour each day under the ultraviolet rays of a tanning bed.
This could cause a genetic mutation in the skin cells and cause skin cancer.
Mr. Winters was having a roach problem in his classroom. He bought a product to kill the roaches. The advertisement said that the roach spray would be effective for at least one month. Mr. Winters and his class kept data on the roaches in the classroom after spraying. Based on the results, what could Mr. Winters infer about the roach spray?
A) The spray did not kill any roaches.
B) The spray worked, but only for about 10 days.
C) The spray kept the roach population down for 21 days.
D) The spray worked just like the advertisement said it would.
Answer: B) the spray worked, but only for about 10 days
Explanation:
Thinking about the structure of this "pick-up organ" how is the surface area to volume ratio maximized?
If we pick small intestine as and organ we can observe its large the surface area/volume ratio. The ration between surface and volume is important, because it impact the function of the organ. In this case, small intestine absorbs the nutrients more efficiently. The surface of the small intestine is increased due to finely wrinkled internal surface and convoluted surface composed of the microvilli (cellular membrane extensions for better absorption).
Which conclusions can be made about the animals of each class based on the structural similarities of the embryos?
Select ALL the correct answers.
1.There is an evolutionary link among the classes.
2.The adults of each class may share structural similarities.
3.Reptiles must have given rise to fish and amphibians.
4.Animals of each class have analogous structures.
Conclusions that can be made about the animals of each class based on the structural similarities of embryos include the presence of an evolutionary link among the classes and that they may share homologous structures. It is incorrect to conclude a direct lineage such as reptiles giving birth to fish and amphibians from embryology alone.
Explanation:Based on the structural similarities of embryos, multiple conclusions can be made about the animals of each class:
There is an evolutionary link among the classes, implying that animals with similar embryonic stages may have diverged from a common ancestor. This is evidenced by shared embryonic features such as gill slits and tail structures, which may disappear in adulthood but indicate a common lineage.The adults of each class may share structural similarities due to their embryological development, suggesting that these shared features are homologous structures inherited from a common ancestor.It is incorrect to conclude that Reptiles must have given rise to fish and amphibians based on embryology alone since the linear progression of species is not how evolution operates. Instead, these groups share common ancestors and have evolved separately.Embryonic similarities among different classes indicate that animals of each class have homologous structures, which are traits inherited from a common ancestor, reflecting evolutionary relationships rather than strictly analogous structures which serve similar functions but do not indicate common ancestry.The presence of similar embryonic stages across diverse groups of animals highlights the concept of evolution from a common ancestor and provides strong evidence for the relatedness of different classes of animals. By studying embryology, scientists can trace the evolutionary paths that have led to the diversity of life forms we see today.
The correct conclusions based on the structural similarities of the embryos are:
1. There is an evolutionary link among the classes.
2. The adults of each class may share structural similarities.
3. Animals of each class have analogous structures.
Based on the options given, the following judgements about the embryos' structural similarities are accurate:
1. There is a connection between the classes through evolution.
The fact that anatomical similarities in embryos frequently imply shared ancestry and evolutionary links between many animal taxa lends credence to this view.
2. There could be structural commonalities among the adults in each class.
This result is tenable because distinct classes of embryos frequently mature into adults with similar anatomical traits derived from their shared ancestry.
3. The structures of the animals in each class are similar.
Although this conclusion is not proved by the available data, it remains a possibility. When a feature in two or more species has a similar function but evolved separately—often as a result of comparable environmental pressures—rather than through common ancestry, it is referred to as an analogy.
As a result, given the embryos' structural similarities, alternatives 1, 2, and 3 are accurate. The available data does not directly support Option 4.
Explain what it means when we say that a nation is an imagined community, and give an example
An imagined community is a concept developed by Benedict Anderson in his 1983 book Imagined Communities, to analyze nationalism. Anderson depicts a nation as a socially constructed community, imagined by the people who perceive themselves as part of that group.
If a sealed balloon is filled and kept in a deep freezer for a period of time, it will shrink in size. Determine the best reasoning for this outcome. A) The air particles inside the balloon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume. B) The air particles inside the balloon slow down due to lower thermal energy. As a result, the air particles become charged, attract to each other and take up a smaller volume. Therefore, the balloon shrinks. C) The rubber latex of the balloon becomes colder and will resist stretching and push the air particles inward until the inside pressure equals the outside pressure and equilibrium is established. D) The density of the air particles increases within the balloon causing some particles to escape out of the balloon. This leads to an increase in the particles and, thus, pressure outside the balloon. This causes the balloon to collapse.
Answer:
The air particles inside the ballon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume.
Explanation:
When particles are excited by an increase in thermal energy they tend to vibrate more and collide. The charged partcles repel each other making them occupy a bigger volume. When the balloon is placed in a deep freezer, the energy is lost to the surrounding thus the particles come together occupying a smaller volume hence the size of the balloon decreases.
Answer:
A) The air particles inside the balloon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume.
Explanation:
took the usa test prep
How has the study of mitosis affected scientists’ knowledge of cancer?
Answer:
Mitosis is the process of cell division in which a single parent cell divides into two daughter cells. The mitosis is also known as equational division in which the chromosome number remains same after the division.
The study of mitosis can be used for the knowledge of cancer. The study of mitosis explains that at which step of cell cycle, the cancer cell has arises. The mutation of a particular protein involved in cell division can be studied by mitosis. Anti- cancerous drugs can be developed by studying the each and every stage of mitosis.
Genes are responsible for:
A. all inherited traits of an organism.
B. all traits of an organism.
C. no traits of an organism.
D. all preferences of an organism.
A. all inherited traits of an organism.
How is science different from other subjects that involve thought, such as art, philosophy, and religion?
A.
Science is more objective, since it is predominantly based on evidence.
B.
Science requires more faith rather than logic and reason.
C.
Science has a tendency to be heavily influenced by society.
D.
Science is more subjective, since theories are based on opinions.
The correct answer is: [A]:
_________________________________________________
" Science is more objective, since it is predominantly based on evidence. "
_________________________________________________
what causes water to go into a stream?
A current which changes the diection causing it to create its own path which starts a a heavy stream and then gradually becomes less as water runs out.
If the metamorphic rock marble dissolves in presence of weak acid,which rock probably was changed into marble by the addition of heat and pressure?
The answer is limestone. Hope I helped you out!
Answer:
Limestone
Explanation:
Marble is a metamorphic rock which is formed, when the sedimentary rock named limestone is subjected to extreme pressure and temperature condition. During this process of metamorphism, the calcite minerals present in the rock limestone undergoes the process of re-crystallization, thereby producing a much more denser and higher grade rock where the calcite crystals alters into more forcibly equigranular crystals.
This is how limestone after going through the process of metamorphism, changes into a metamorphic rock named marble.
Why are populations with high levels of genetic diversity more stable than populations with low levels of genetic diversity?
A. Populations with high levels of genetic diversity are less likely to have high levels of variation in alleles.
B. Populations with high levels of genetic diversity are more likely to have individuals with traits that help them survive if conditions change.
C. Populations with high levels of genetic diversity are less likely to interbreed with other populations.
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
Explanation:Whenever any change in climate or environment will occur the individuals with high level of genetic diversity will more likely to survive because they have the individuals that undergo natural selection.
Answer:
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
Clarification:
At whatever point any adjustment in environment or climate will happen the people with significant degree of hereditary variety will bound to endure in light of the fact that they have the people that go through normal choice.
A technique psychologists use to measure electrical activity in the brain is
A. EEG
B. lesion
C. fMRI
D. CAT Scan
E. PET Scan
A technique psychologists use to measure electrical activity in the brain is A. EEG
Electroencephalogram (EEG) detects the brain activity through electrical signals.
What is EEG?EEG is a technique where graphical image of the brain is procured using electrical signals.
EEG is exclusively carried out for brain study. It is helpful in diagnosis of seizures and epilepsy.
Multiple electrodes are attached to the brain scalp. A small amount of current in the power source generates electricity.
This produces electrical signals which are carried to the brain. As a result an electrogram is generated on the screen which records the activity in brain.
EEG is an old method of investigation as now several advanced and sensitive tests are available. For eg., MRI, CT-Scan and PET Scan.
EEG is a non-invasive technique. It is simple and easy to perform.
EEG is cost effective as compared to other tests. It does not require large equipment or set up and can be performed at clinic itself.
Therefore, EEG can be used as diagnostic test for evaluation of brain disorders.
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Which of the following is a pattern of biogeography that supports the theory of evolution? A. Closely related organisms that live in different environments are often very different from each other. B. Analogous structures show common descent for unrelated species. C. Closely related organisms that live in different environments don't show any different adaptations. D. Analogous structures show that living in similar habitats doesn't lead to similar adaptations.
I believe B.) Analogous structures show that living in similar habitats doesn't lead to similar adaptations is your right answer.
What are the stages in the water cycle?
First water evaporates from watersources on earth, mostly from seas. Them, it forms clouds on the atmosphere. These will condense and give way to precipitation. Once the rain falls, some will form puddles, some will fall back from where they came frome (rivers, lakes and oceans) and part of it will be drained to underground watersources, in a process called infiltration.
The water cycle also includes some less important processes such as sublimation, transpiration and evapotranspiration.
→ Hopefully the image below will help you understand the water cycle better.
Hope it helped,
BioTeacher101
A certain species of fish can have either long or short fins. The allele for long fins is dominant over the allele for short fins. A heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. Of the offspring, will have long fins and be , and will have short fins and be
Answer:
A certain species of fish can have either long or short fins. The allele for long fins is dominant over the allele for short fins. A heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. Of the offspring, 50% will have long fins and be heterozygous , and 50% will have short fins and be homozygous.
Explanation: It's correct on Plato
What property of water refers to water's ability to move up the stem of a plant against the force of gravity?
Surface tension
Cohesion
Adhesion
Capillary action
Answer:
Or i think its capillary action
Explanation:
Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in a thin tube, in porous materials such as paper and plaster, in some non-porous materials such as sand and liquefied carbon fiber, or in a biological cell. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.
Which location would benefit best from the use of solar panels?
A. A location that is heavily wooded
B. A location that receives a large amount of snow
C. A location that receives a large amount of radiation
D. A location that is frequently cloudy
Answer:
Option “C”.
Explanation:
A location that receives a large amount of radiation.
A solar panel needs solar energy (solar radiation) to convert it into other forms of energy, for example, it requires solar energy to glow the bulb, heats the water, runs various electrical appliances, etc. Hence, a proper area that receives a large amount of radiation is a favorable condition for installing solar panels.
The pia mater layer in the ventricles is rich in blood vessels
Pia mater (soft inner layer of the dural membrane system) The pia mater, which contains vessels, is the innermost layer of the three meningeal membranes. ... Furthermore, it creates the choroid plexus, a network of bold vessels, which enter the brain ventricles and produce the cerebrospinal fluid (CSF).
The pia mater, a delicate layer rich in blood vessels, covers the brain and spinal cord. Conversely, ventricles are fluid-filled compartments where cerebrospinal fluid (CSF) is produced by the choroid plexus. Both pia mater and ventricles are essential parts of the brain's nourishing and protective mechanisms.
Explanation:The pia mater is a thin, delicate layer that directly covers the brain and spinal cord. It is rich in blood vessels that nourish the central nervous tissue. The ventricles, on the other hand, are fluid-filled compartments in the central nervous system (CNS) where a tissue called the choroid plexus produces cerebrospinal fluid (CSF).
The pia mater and the ventricles are part of the brain's protective and nourishing mechanisms. The brain floats in CSF, which guards it like a cushion, helping to make it neutrally buoyant. Moreover, the CSF also circulates chemical substances throughout the brain and into the spinal cord.
The ventricles and their choroid plexuses are a key component of the circulation of cerebrospinal fluid, which also contributes to waste removal from the CNS. The choroid plexuses are structures where ependymal cells line blood capillaries filtering blood to produce CSF in the four ventricles of the brain.
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Trevor dropped a bit of olive oil on the kitchen floor while he was cooking. Later, his mother slipped on the spot where he dropped the oil and fell.
What can Trevor infer based on his observations?
A.
Olive oil can be used as an adhesive between two solid objects.
B.
The oil reduced the friction between the floor and his mother's foot.
C.
Trevor's mother slipped on the spot where he dropped the oil.
D.
The oil increased the gravitational force on his mother's foot.
Answer:
B.
The oil reduced the friction between the floor and his mother's foot.
Explanation:
When things slide, it is just fancy terms for one of two things- force exceeding the amount of friction on the ground, or the friction decreasing itself.
In the question, it is implied that Trevor's mom is walking completely normal, excluding the olive oil; therefore, there is no force exceeding what the friction of the ground can prevent from sliding. This leaves the other option, which implies that the olive oil decreased the friction between the floor and his mother's foot, which makes sense as olive oil is a lubricant.
Henceforth, the answer is B. The oil reduced the friction between the floor and his mother's foot.
Answer:
The oil reduced the friction between the floor and his mother's foot.
Explanation:
On a microscope, what is used for final focusing?
Fine adjustment knob is used for final focusing
Explanation :On a microscope, there are two types of knobs are present to adjustment the images i.e coarse and fine adjustment knob. Coarse adjustment knob is used to make the rough focus by moving the specimen stage vertically. Whereas fine adjustment knob is used to bring the image into sharp focus. It is also used to focus on different parts of the specimen under examination
gimme my 400 points g