Anything written about an issue/person after the fact is a SECONDARY source. A primary source would be the person them self sharing with you,or you witnessing the action or event.
Parrotfish are herbivores that are found in coral reefs. To escape predation, a parrotfish will graze with a rabbitfish, which has venomous spines at the end of its pelvic fins. The rabbitfish does not benefit from this relationship. Which type of relationship do the parrotfish and the rabbitfish have in the coral reef AParasitism B Predation C Mutualism D Commensalismon
Commensal/commensalism is the correct answer.
If this propane tank is opened inside a house, the atoms in the tank immediately spread throughout the whole house. Propane is most likely a solid. liquid. gas. plasma.
The right option is; gas
Propane is most likely a gas.
Propane gas is a flammable hydrocarbon, and one of the liquefied petroleum gases. Propane is produced from petroleum refining and natural gas processing. Propane gas can be liquefied at very low pressures. Propane is commonly used as fuel in cooking, heating, and also for aerosol propellants, refrigerants, and in motor vehicles.
Propane is a gas that is often used for heating and cooking, and it is stored as a liquid under pressure.
If a propane tank is opened inside a house, the atoms from the tank will quickly spread throughout the house. This behavior is characteristic of a gas, which is one of the states of matter. Propane, with its molecular formula C3H8, is indeed commonly used as a gaseous fuel. At room temperature and under moderate pressure, propane is typically stored as a liquid in tanks, but when it is released, it becomes a gas. This change occurs because propane, while it liquefies under pressure, will vaporize and expand to fill the available space once the pressure is removed and the propane is exposed to normal atmospheric conditions.
Propane is an efficient energy source and is used in situations where natural gas pipelines are not available. It is also known for its use in barbecue grills and various heating applications. Propane's ability to be compressed into a liquid form greatly facilitates its storage and transportation. When released, it expands and is used as a gas.
A gas can be squeezed into a smaller container, but a liquid cannot. What does this suggest about the arrangement of particles in liquids and gases?
Gas is compressible while liquid and solids are not. Gas particles are free to go wherever they please. The gas particles are not compacted together very tightly whereas solid particles are compacted very tightly. Liquid particles are not super compacted but they’re still not able to move as freely as gas particles. Hope that helps
Answer:
Use the particle model of matter to explain why you can compress a gas easily, but you cannot compress a liquid very easily. The particles in a gas have very large spaces between them, so the particles can be 'squashed' closer together, meaning the gas can easily be compressed to take up a smaller volume.
Explanation:
I need help with number 38 and 39 if anyone could help.
Answers
38. (b) be smaller in size, (The cell 0.5% salt placed in a hypertonic solution of 1.5% salt)
39. (a) cell A will swell more than cell B
Explanation
The process where water moves across a membrane is called osmosis. Salt solution triggers osmosis by attracting the water and making it to move towards it, across the membrane. If the concentration of the salt inside a cell is the same as that concentration outside the cell, the water level will stay the same and there will be no change in shapes of the cells because they are placed in an isotonic solution. A cell cannot loose or gain water when placed in an isotonic solution.
The movement of water in a cell occurs towards the highest solute concentration. If a cell is in a hypertonic solution (> 5% glucose) solution, the water will move from the lower concentration of solute to the region with the highest solute concentration to maintain equilibrium of osmotic pressure. Cell B that is placed in a 5% glucose will lose more water and its size will be smaller than that of cell A because it would have wilted more than cell A which was placed in a 2% glucose solution.
The correct option of 38 question is B which is be the smaller size.
Explanation:As the cell is suspended in salt solution which is hyper tonic as compared to cell.
And salt ions are also not allowed to enter the cell, so the consequence will be the movement of water from cell to salt solution to make cell equal to salt solution.
So the cell will shrink making cell of smaller size.
Part 2.The correct option of 39 question is option B which is cell B will swell more than cell A.
Explanation:Actually here swelling means the size of cells.At the end the size of cell B will be more than the size of cell A. Because the cell A is placed in less concentrated solution than the cell B. First glucose will diffuse to cell making cell hypotonic and after that water moves in cell by osmosis.Water always move from high concentration to low concentration.As in cell A low amount of glucose and water will move in cell than Cell B.Hence Cell b will swell more than A.Imagine that two test tubes are set up with 5 mls of starch in both and 500 amylase enzyme molecules added to one tube while 1,000 amylase enzyme molecules were added to the other. Would you expect them to finish digesting at the same time? If not, which one would complete the digestion first and why?
The test tube with 1,000 amylase enzyme molecules is expected to complete the digestion of starch faster.
Explanation:Digestion of starch starts in the mouth, where amylase breaks the starch chains into shorter pieces such as maltose. There are more amylase enzyme molecules in the test tube with 1,000 amylase molecules compared to the one with 500 amylase molecules. Therefore, you would expect the test tube with 1,000 amylase enzyme molecules to complete the digestion of starch faster than the other tube. This is because the higher concentration of amylase enzymes allows for more efficient and faster breakdown of starch molecules into sugars.
What factor makes cattle susceptible to fright?
A. innate aggression
B. mental incapacity
C. anxious temperament
D. poor spatial awareness
Answer:
poor spatial awareness is what i got correct
Explanation:
If the mass of a material is 49 grams and the volume of the material is 9 cm^3, what would the density of the material be? I need the answer as well as the unit
The density is the quotient between the mass of a material and the volume occupied by it, The density can be expressed for a substance or for a mixture of substances. For example, water density in ambient conditions is equal to 1.00 g/cm3, which means that in 1 cm³ or 1 mL, there are 1.0 g of water. Therefore:
D = m / V
D = 49 g / 9 cm³
D = 5.444 g/cm³
What factors that influence mass movement of particles
Mass movement, which is sometimes called waste movement or slope movement, is defined as the large movement of rock, soil and debris downward due to the force of gravity.
Factors affecting mass movement1. Slope
- Gravity provides the energy to move the materials.
- Rapid movements (e.g. landslide, slumping) etc.
2. Water
- Rainwater acts as a lubricant to weathered materials.
- Rainwater adds weight to weathered materials.
3. Rock structure
- Joints dipping downslope usually assists landslides, rockfalls, rockslide etc
4. Vegetation
- Lack of vegetation cover to hold the loose particles.
5. Vibrations
- Earthquakes.
- Construction processes and mining operations.
In an experiment, Dr. Travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. The amount of calcium is_______ variable. The risk of bone fractures_________ .
1. A reliable
an independent
a dependent
2.can be changed by the participants
can be changed by the researcher
could change with calcium
Osteoporosis refers to an ailment characterized by reduced bone mass and loss of bony tissue that may lead to weak and fragile bones. In an experiment, Dr. Travis tested the influences of the consumption of calcium on osteoporosis, the condition that results in enhanced chances of bone fractures.
In the given experiment, the amount of calcium is the independent variable, and the risk of bone fractures could get changed with the amount of calcium consumption.
The amount of calcium is independent variable.
Explanation:An independent variable is a variable in an experiment which is changed to see its effects on dependent variable.
In this experiment, to know about the causes of osteoporosis, the Ca level in blood or calcium intake in changed.
So the concentration of calcium will be independent variable.
Part 2.The risk of bone fractures is could be changed with calcium.
Explanation:In this experiment osteoporosis or risk of bone fracture is dependent variable.Dependent variable are results of experiment which can be changed by independent variable.As in experiment, Calcium concentration is independent variable.So the risk of osteoporosis depends can change with calcium.
By what process are these digestive enzymes excreted from pancreas cells?
Pancreatic juice is composed of two secretory products critical to proper digestion: digestive enzymes and bicarbonate. The enzymes are synthesized and secreted from the exocrine acinar cells, whereas bicarbonate is secreted from the epithelial cells lining small pancreatic ducts.
Which factors caused the rapid decline or decrease of the Sierra Nevada yellow-legged frog population? Check all that apply. fish fungus pesticides UV radiation pollution
Answer:
A. Fish
B. Fungus
Explanation:
Just did it on edge
Fish and Fungi caused the rapid decline or decrease of the Sierra Nevada yellow-legged frog population. So the correct options are A and B.
What are environmental factors?A population is a measurement of the total number of people in a region, and it can take many different forms. They depict groupings of people that could be very big or very little in size, dispersed or close together, and composed of a wide range of people or people who are highly similar.
We may talk about the population of humans in Chicago, for instance, but we might also talk about the human worldwide population. Despite being two completely distinct groupings, both are populations! The distribution of a population is the region across which it exists, and the abundance of that population is the number of persons in that area.
However, all populations are prone to many environmental variables and factors that have an impact on how they develop and survive, regardless of their size, shape, or diversity.
Therefore the correct options are A and B.
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Which of the following happens during cell division?
Question 13 options:
The cell's volume increases.
It becomes more difficult for the cell to get rid of wastes.
It becomes more difficult for the cell to get enough oxygen and nutrients.
Each daughter cell receives its own copy of the parent cell's DNA
Corpus delicti evidence at the Willow Lane crime scene is _____. the neighbors soiled trousers, evidently spattered with blood the scattered papers along the pathway through the hedge the bleeding victim exhibiting knife wounds in his back the 911 call reporting screams and a bleeding victim in the driveway
Julian designs an experiment to see how well different liquids lubricate wooden surfaces. He sets up a number of identical wooden ramps and prepares to slide identical wooden blocks down them. He will time how long it takes each block to reach the end of the ramp. He covers one ramp with water, the second with motor oil, and the third with corn syrup.
What can Julian use as a control group for the experiment?
A.
a ramp with no liquid on it
B.
a second set of ramps covered with water, oil, and syrup respectively
C.
a ramp with no friction on its surface
D.
a block that drops straight down instead of sliding down a ramp
its A. A ramp with no liquid
Answer:
The answer is A. "A ramp with no liquid on it."
Explanation:
He needs a control group to make sure that he proof is valid.
bronchoconstriction is treated by inhaled
A. Histamine antagonists
B. Opiates
C. Pentobarbitals
D. Cholinergic antagonists
D. Cholinergic antagonists
There are many ways in which organisms in which and ecosystem interact. two of these relationships are parasitism and predation, in what way is parasitism similar predation?
Parasitism is the relationship between two species where one organism (the parasite) benefits from another organism (by living in it and) causing harm to the host parasite.
While predation is an interaction between two organisms (predator and prey) where the predator eats a prey or a part of its body.
Considering these two relationships, we can say that both of them grow at the expense of the host or prey. Therefore, both of the predator and parasite are dependent on prey or host for their survival.
Parasitism and predation are similar in way that in both process only one partner gets benefited while other gets harm.
Explanation:Parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm.
The preying of one animal on others.
In both case second party always get harm.
some groups of expert farmers grew potatoes, tobacco, tomatoes, and other plants what is the simple subject
A: some group of expert farmers
B: groups
C: potatoes, tobacco, tomatoes, and other plants
D: plants
Plants would be correct...
The skeletal part of the musculoskeletal system:
A. produces facial expressions.
B. helps the body to create heat.
C. protects the organs of the body.
D. eliminates wastes from the body.
Answer: C.
Explanation:protects the organs of the body.
The first accurate measurement of the size of Earth was made by _____.
The answer would be Eratosthenes
In 240 B.C., a soon to be famous Greek astronomer Eratosthenes made the first good measurement of the size of Earth.
Catergorize the particles according to weather they are found in the nucleus or the eclectic cloud
Nucleus: Protons and Neutrons
Electron Cloud: Electrons
ExplanationAn atom consists of three subatomic particles i.e Electrons, Protons and neutrons. Protons and neutrons are found inside of the nucleus of an atom whereas electrons are found in the orbits that surround the nucleus of an atom known as electron cloud. In the atom Protons contain positive charge to attract the electrons which contain negative charge and the neutrons contain no electrical charge.
nucleus-
positively charge particles
neutral particles
electron cloud-
negatively charged particles
just finished assignment hope this helps
what does it mean for molecuels to move down the gradient
" Up " or " against " a concentration gradient means from low concentration to high concentration. Moving in this direction requires some sort of en else.
The number of urban areas worldwide has been decreasing due to lack of resources.
True
False
False
Explanation:The number of urban areas are not decreasing due to lack of resources. But in present world number of urban areas are increasing exponentially because people are moving towards the big cities for the better health, education and job facilities.
Answer:
false
Explanation:
How can the practice of tillage be harmful to the overall environment? a. It can impact waterways through sedimentation and pollution. b. It is harmful to the soil that is tilled. c. Tillage decreases overall crop productivity. d. All of the above
My answer to this question is A. It can impact waterways through sedimentation and pollution. It makes more sense. Also I took a test on this.
The practice of tillage can be harmful to the overall environment as it can impact the waterways through sedimentation and pollution. Thus, the correct option is A.
What is Tillage?Tillage is the agricultural preparation of the soil through mechanical agitation of various types of practices, such as digging, stirring, and overturning. Examples of human-powered tilling methods using the hand tools which include shoveling, picking, mattock work, hoeing, and raking.
Depending upon the purpose or the necessity required, different types of tillage are carried out in the environment. These are deep ploughing, subsoiling and year-round tillage. The practice of tillage can be harmful to the environment as it can impact the waterways through the sedimentation and pollution.
Therefore, the correct option is A.
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Predict where the structural differences would occur between an-pep and other enzymes that do not digest the peptides.
AN-PEP enzyme refers to a dietary supplement, which has been shown to dissociate gluten in the stomach. It has been proven to help the individuals suffering from Gluten sensitivity or Celiac disease. The scientific name of the enzyme is Aspergillus Niger prolyl endoprotease.
However, certain structural differences would take place between AN-PEP, which prevent the enzyme from digesting the peptides. Some of the differences like amino acid differences would be expected in the active site, and in the regions, which influence the folded composition of the active site.
Marla dabs a small dot of red lipstick on 20-month-old lia’s nose. when put in front of a mirror, lia touches her nose, indicating the development of
Answer:
Leah is indicating the development of self-awareness.
Explanation:
In 1972 Beulah Amsterdam of the University of North Carolina published a study that toppled decades of research and kicked off self-awareness. The study procedure was simple: 88 babies aged 6 to 24 months were placed in front of a mirror, all of them had a small red spot on their noses. Then the mothers would point to the baby's reflection in the mirror and ask who the mirror was. The researchers watched the babies' behavior during the tests.
Only babies ages 20-24 could recognize themselves in the mirror. These babies pointed to the red spot on their own noses. This strongly suggests that they recognized the image as their own, became aware of self, so much so that they pointed to the roaring stain on their own noses.
Accordingly, we can see that when Lia touches the red spot on her nose she is demonstrating that developing self-awareness.
It is the _____ to show that the evidence presented by the forensic experts is not accurate and not properly processed.
crime scene investigator's job
defense lawyer's job
suspect's responsibility
witness's responsibility
Well its not Witness's responsibility or suspects responsibility.
I think is defense lawyer's job Because Criminal defense lawyers employed by the government are known as public defenders. A criminal defense lawyer researches, prepares and argues a case on the behalf of a client in order to defend them from the criminal charges.
Answer: crime scene investigator's job
Explanation:
A criminal defense lawyer is the either employed by the government or by the suspect or criminal on his behalf to fight the case against the prosecuting side. The role of the criminal defense lawyer is to research about the case and argue in the court of law with the prosecuting lawyer so as to defend the client from the criminal charges. In attempt to save the client the defense lawyer will try to make the available evidences against the client to be futile and unacceptable for conviction. Such a lawyer can convince the jury or judge that the given report by the forensic expert is incorrect and cannot be accepted as evidence against the client.
Order cyanocobalamin 1 mg/wk im. available: cyanocobalamin 1000 mcg/ml. dose to be given: ________
the answer is 1 dose
To determine the dose of cyanocobalamin to be given, we need to convert milligrams (mg) to micrograms (mcg) since the available concentration is in micrograms per milliliter (mcg/ml). The dose to be given would be 1000 mcg/week, or 1 ml/week of the available cyanocobalamin solution.
Explanation:The available concentration of cyanocobalamin is 1000 mcg/ml. To determine the dose to be given, we need to convert milligrams (mg) to micrograms (mcg) since the available concentration is in micrograms per milliliter (mcg/ml).
To convert milligrams to micrograms, we multiply by 1000. So, 1 mg is equal to 1000 mcg. This means that the dose to be given would be 1000 mcg/week, or 1 ml/week of the available cyanocobalamin solution.
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Need help 1-3
1. The mass of the container holding this table is 3G. What is the mass of the table salt?
2. What is the mass if the combined mass of the table salt and the container is 124g and the mass of the container is 9g?
3. A gram is equal to 1,000 milligrams. If a sample has a mass of 52 grams, what is its mass in milligrams?
9G IS IT AND THATS IT ALL GOT IT
Final answer:
The mass of the table salt is found by subtracting the mass of the container from the total mass. For example, 124g (total) - 9g (container) equals a salt mass of 115g. To convert grams to milligrams, multiply by 1000; hence 52 grams equals 52000 milligrams.
Explanation:
Understanding Mass Measurements
To answer the questions regarding mass measurements and conversions:
The mass of the table salt can be determined by subtracting the mass of the container from the total mass. If the total mass mentioned is 3G (assuming G stands for grams), but normally a container weight is provided along with the total weight, this value might be a typo. The correct calculation would be the total mass minus the container's mass.The mass of the table salt when the combined mass of the salt and container is 124g and the container alone is 9g can be found by subtracting the mass of the container from the total mass, which would be 124g - 9g = 115g.To convert grams to milligrams, multiply the mass in grams by 1000. Therefore, a sample with a mass of 52 grams would be 52 grams * 1000 mg/g = 52000 milligrams.Which of these is LEAST LIKELY to cause the extinction of organisms?
A) hunting animals for food
B) clearing land for agriculture
C) migrating from one region to another
D) new plant species competing with native plants
Final answer:
Migration is the least likely to cause extinction as it is a natural behavior, unlike overharvesting, habitat destruction, and competition with invasive species, which are significant drivers of biodiversity loss.
Explanation:
The option LEAST LIKELY to cause the extinction of organisms among the ones provided would be C) migrating from one region to another. This is because migration is a natural process that most organisms undertake in response to seasonal changes or to fulfill their lifecycle requirements. While individual organisms might face risks during migration, as a process it generally does not lead to species extinction.
In contrast, hunting animals for food (A), clearing land for agriculture (B), and new plant species competing with native plants (D) can contribute significantly to species endangerment and possible extinction. Overharvesting through hunting can deplete populations beyond recovery, habitat loss from land clearing can remove the home environment necessary for species survival, and invasive species can outcompete native species, leading to a decline in biodiversity. These factors are often interconnected with major causes of biodiversity loss, such as habitat loss, climate change, invasive species, and overharvesting.
As part of an experiment, a student burns propane (C3H8) to produce carbon dioxide (CO2) and water (H2O). She remembers that she must follow the Law of Conservation of Matter when writing a balance chemical equation. Which of these equations adheres to the Law of Conservation of Matter?
A) C3H8 + O2 -> CO2 + H2O
B) C3H8 + O2 -> 3CO2 + H2O
C) C3H8 + 3O2 -> CO2 + 4H2O
D) C3H8 + 5O2 -> 3CO2 + 4H2O
The correct answer is: D) C3H8 + 5O2 -> 3CO2 + 4H2O
The law of conservation of mass (matter) states that the mass of the system must remain constant over time. So, the mass of the chemical components before the reaction must be equal to the mass of the components after the reaction, according to this law.
3 C,8 H, 10 O
the answer is D) C3H8 + 5O2 -> 3CO2 + 4H2O