Water's cohesive property, which makes it stick together in drops, is due to its molecular structure that facilitates hydrogen bonding. The polarity of water molecules leads to the formation of hydrogen bonds, which makes water a structured liquid with high surface tension.
The Property of Cohesion in Water
The property of water indicated by the data is its cohesive nature. Water molecules exhibit a strong tendency to stick together, forming drops rather than existing as separate molecules. This behavior is most visible when observing water dripping from a leaky faucet or accumulating in dew drops.
The cohesive property of water is explained by the molecular structure of water, or H₂O. Each water molecule consists of one oxygen atom covalently bonded to two hydrogen atoms, creating a polar molecule with a partial negative charge on the oxygen and partial positive charges on the hydrogens. This polarity allows water molecules to form hydrogen bonds with each other, where the oxygen of one water molecule attracts the hydrogen of another. These bonds create a network that holds the molecules together, contributing to water's high surface tension and its ability to form drops.
Hydrogen Bonding in Water
Hydrogen bonding is the molecular structural feature responsible for many of water's unusual properties. The bond is relatively weak on its own, but when many hydrogen bonds form between water molecules, they collectively create a stable, structured liquid. This extensive hydrogen bonding is what gives water a high boiling point, high heat capacity, and the ability to dissolve numerous substances, which is why water is often called the 'universal solvent'.
In essence, the structure of water molecules and the network of hydrogen bonds between them are the keys to understanding why water behaves in such distinctive ways compared to other molecules of similar size.
Which line on the graph shows the sea level change that would result in continuous shoreline regression
A
B
C
D
Answer:
C
Explanation:
When examining the trends in coastal position over a time frame, you perform shoreline change analysis. In most cases, coastal changes are very non-linear.A normal regression of the shoreline happens when there is supply of sediments where the base level is rising at the shoreline.Here the rate of sediment deposition is more than that at which the base level is rising at the shoreline.
The movement ofa shoreline seawards due to sedimentation at the coast is called regression.If this movement is due to sea-level fall like in our case in the question it is force regression.In option C, the sea level is falling.
The process in meiosis 1 that increases genetic variability is known as
Answer:
the answer is either synapsis or crossing over
Which scientific area is a major force in shaping modern classification methods
Answer:
c
Explanation:
its evolution
What is the name of the tool used in this picture. And useful for what?
Answer:Ultrasound scans, or sonography mostly sonography
Explanation:
Ultrasound scans, or sonography, are safe because they use sound waves or echoes to make an image, instead of radiation. Ultrasound scans are used to evaluate fetal development
Answer: Ultrasound
Explanation:
The ultrasound is used to see the pictures of inner body. It is used for the pregnant lady to see growth and development of the embryo inside the body.
It uses sound waves which is more than 20 kilohertz in healthy adults. It is also known as sonography.
A small device known as transducer and gel is used to amplify the sound waves that strikes the organs or embryo and the reflected sound waves produces a picture.
A gardener accidentally trims the leaves of a green plant too short. The
leaves are now much smaller. He notices that the plant grows more slowly
than it used to. Which sentence best explains why the plant grows more
slowly?
O
A. The plant has less chlorophyll to produce energy.
B. The plant has more chloroplasts in its cells.
O
C. The plant now gets too much sunlight to be healthy.
D. The plant has too many thylakoids in its cells.
SUBMIT
The reduction in leaf size means less chlorophyll is available for photosynthesis, leading to slowed growth in the plant since it cannot produce energy as efficiently.
The plant grows more slowly because it has less chlorophyll to produce energy. Chlorophyll is crucial in photosynthesis, the process by which plants convert light energy into chemical energy. With the leaves trimmed too short and their size reduced, there is a smaller surface area for the chlorophyll to absorb sunlight and produce the necessary energy for growth.
Hence, the reduction in the rate of photosynthesis ultimately leads to slower growth of the plant. This is well-known among horticulturists and is a key principle in plant biology.
_6. Every chemical reaction always involves which of the following?
a. a change in the state of matter.
c. a combination of compounds
b. a transfer of electrons between atoms d. some transfer of energy Solid
Every chemical reaction involves some transfer of energy as bonds between atoms are broken and new ones are formed. These processes require energy which can be observed in our daily lives when our bodies break down food to utilize energy for different functions.
Explanation:In every chemical reaction, there is always some transfer of energy. This energy change takes place because in a chemical reaction, bonds between atoms in the reactants are broken and new bonds are formed in the products. Both these processes - breaking and forming of bonds - involve energy. For instance, when we eat food (which is a form of potential energy), our body breaks down the chemicals in food through metabolic reactions, releasing energy that is then used for various cellular processes. Therefore, the correct answer is option (d).
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what happens to excess hydrogen ions when an acid is added to blood
Answer:
When the blood becomes too acidic, the kidneys remove excess H+ ions from the body and excrete them in the urine.
Explanation:
Excess hydrogen ions from an acid added to the blood are handled by the body's buffer system to maintain a stable pH level. Bicarbonate ions react chemically with these ions, forming carbonic acid which breaks down into carbon dioxide and water that the body exhales.
Explanation:When an acid is introduced into the blood, it increases the concentration of hydrogen ions. These ions can be harmful if their levels become too high. The body has a mechanism in place to handle excess hydrogen ions and maintain a stable pH level. This mechanism is part of what's known as the buffer system. The blood buffer system, mainly composed of bicarbonate ions and hemoglobin, helps maintain the blood pH around 7.4. The bicarbonate ion acts as a weak base and reacts chemically with the excess hydrogen ions, forming carbonic acid which eventually breaks down into carbon dioxide and water. The body then gets rid of the carbon dioxide when we exhale.
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FILL IN THE BLANK
14 : Both starch and glycogen are forms of ———
15: Describe the structure of a lipid . It has a ——— head and a ———— tail
16: list and describe the levels of protein structure .
A .
B.
C.
D.
17: Animals store glucose as ——— plants as ———
18: enzymes lower the ——————— for a reaction .
19: what is the function of the “R group “ in a protein ?
Where does DNA protein binding typically occur and why
Answer:
DNA-binding proteins are proteins that have DNA-binding domains and thus have a specific or general affinity for single- or double-stranded DNA.[3][4][5] Sequence-specific DNA-binding proteins generally interact with the major groove of B-DNA, because it exposes more functional groups that identify a base pair. However, there are some known minor groove DNA-binding ligands such as netropsin,[6] distamycin, Hoechst 33258, pentamidine, DAPI and others.
Explanation:
here are some examples
DNA-binding proteins include transcription factors which modulate the process of transcription, various polymerizes, nucleases which cleave DNA molecules, and histones which are involved in chromosome packaging and transcription in the cell nucleus. DNA-binding proteins can incorporate such domains as the zinc finger, the helix-turn-helix, and the leucine zipper (among many others) that facilitate binding to nucleic acid. There are also more unusual examples such as transcription activator like effectors. i hope this helped -w-
DNA protein binding occurs in the nucleus of a cell and involves transcription factors that bind to specific DNA sequences to regulate gene transcription. The translation of these genetic codes leads to protein synthesis, dictating the varied cell functions.
Explanation:DNA protein binding typically occurs in the nucleus of a cell. It happens because proteins often play a role in gene regulation. These proteins, often referred to as transcription factors, bind to specific sequences in the DNA to regulate the transcription of genetic material to RNA, which eventually leads to protein synthesis.
For example, when a cell needs to produce a specific protein, a corresponding transcription factor binds to the DNA sequence, initiating the process of transcription. This process ultimately guides the assembly of a protein encoded by the DNA sequence.
Therefore, DNA protein binding is an essential step in translating the genetic instructions present in our DNA into the functioning proteins that carry out numerous roles within the cells.
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Where in the cell are chloroplasts located?
Answer:
Hope this helps have an amazing day! :)
Explanation:
The chloroplast is located throughout the cytoplasm of the cells of plant leaves and other parts depending on the type of plant. Actually, you can see where in a plant the chloroplasts are because chloroplasts are what make the plant appear green.
Answer:
The chloroplast is located in the cytoplasm of the cell. Hence the location of chloroplast is throughout the cytoplasm.
Explanation:
Cell is defined as the smallest unit of the body. It is also considered to be as building block of the body. It is present in plant as well as animal. There are many organisms that are considered to be as single-celled.
All the single celled organism are you known as prokaryotic animals and they are living on the earth for many years like thousands of years. Cytoplasm is a liquid substance which is present inside the cell. It covers all the part of the cell and all the organelles lives inside the cytoplasm.
Food web starting with sun and pointing to grasshopper and squirrel; Grasshopper pointing to squirrel, wolf, and snake; squirrel pointing to wolf, snake, and bird; wolf pointing to decomposition with worms and mushrooms; snake pointing to wolf and decomposition with worms and mushrooms; bird pointing to decomposition with worms and mushrooms; decomposition pointing to the sun stating soil nutrients.
If we removed the decomposers from this food web, how would it affect the balance of the ecosystem?
There would be an increase in dead matter and a lack of nutrients in the soil.
There would be a decrease in dead matter and a lack of nutrients in the soil.
There would be an increase in dead matter and an increase in nutrients in the soil.
There would be a decrease in dead matter and an increase in nutrients in the soil.
Answer:
There would be an increase in dead matter and a lack of nutrients in the soil.
Explanation:
Decomposers break down dead matter which introduce the nutrients back into the soil.
The correct answer is A. There would be an increase in dead matter and a lack of nutrients in the soil.
Explanation:
Decomposers such as mushrooms are organisms that break apart dead matter, this is the last step or final link in a food web because decomposers break apart any death organism including top predators and they return the nutrients taken by these to the soil, which is necessary for producers or plants to exists. Due to this, if decomposers were removed dead matter would increase as this would not be broken apart by decomposers; and there would be fewer nutrients returning to the soil which would affect producers such as plants.
why are valves found in veins, but not in capillaries or arteries?
Valves are found in veins but not in capillaries or arteries primarily due to differences in blood pressure and flow dynamics.
1. Veins experience lower blood pressure: Unlike arteries where blood is pumped directly from the heart at high pressure, veins carry blood back to the heart at lower pressure. This lower pressure can sometimes result in blood pooling, especially in the extremities where gravity works against the return flow of blood. Valves in veins prevent this pooling by ensuring that blood flows in one direction only, towards the heart, and prevents backflow.
2. Gravity and distance: Veins are often located further from the heart and may be working against gravity to return blood to the heart, especially in the lower extremities. Valves help facilitate this process by preventing blood from flowing backward due to gravity.
3. Capillaries and arteries have different functions: Capillaries are the site of exchange between blood and tissues, where nutrients, gases, and waste products are exchanged. They are very small in diameter and have thin walls optimized for this exchange. Arteries, on the other hand, carry oxygen-rich blood away from the heart to various parts of the body under high pressure. Valves are unnecessary in capillaries because blood flow is regulated by the contraction and relaxation of surrounding smooth muscle cells and the pulsatile flow generated by the heart.
Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment?
A. Hypotenuse models and calculations
B. Test variables data and uncontrolled conditions
C. Data conclusion in unregulated environment
D. Independent independent variables data and controlled conditions
Answer: D
Explanation:
A) - Makes no sense, so no
B) - Experiments in laboratories must be controlled, so no.
C) - A laboratory is a regulated environment, so no.
D) - Only D makes sense, as it is true.
Answer:
The answer is "D"
Explanation:
The victims body is not rigid. How long has she been dead?
The lack of rigidity in a body indicates death occurred less than a few hours ago or more than 48 hours ago, as these timeframes straddle the temporary condition of rigor mortis. Significant joint disarticulation suggests a more extended period post-death, during decomposition.
Explanation:The assessment of the time since death based on the rigidity of a body involves an understanding of rigor mortis, which is a biological and medical concept. If a victim's body is not rigid, it suggests that the person has been dead for either a short period, generally less than a few hours during which rigor mortis has not set in, or a longer period typically more than 48 hours after death in which rigor mortis has passed and the body has returned to a more relaxed state. Significant joint disarticulation, as mentioned in some of the provided excerpts, occurs at an even later stage when the body has started to decompose and the connective tissues have broken down.
Final answer:
If the victim's body is not rigid, it could imply that the individual has been dead for either a very short period (less than 2 to 6 hours) or for an extended period (over 72 hours), as these time frames are relevant to the process of rigor mortis. Several factors, including environmental conditions and the individual's pre-mortem state, influence this timeline.
Explanation:
If a victim's body is not rigid, it suggests that rigor mortis has either not yet set in or has passed. Rigor mortis is a temporary state where the muscles of the deceased's body stiffen post-mortem. It typically begins within 2 to 6 hours after death and can last up to 72 hours. Once it subsides, the body returns to a state of laxity. Therefore, if a body is not rigid, the person could either have been deceased for a very short time, not exceeding a couple of hours or the body has been dead for more than 72 hours and rigor mortis has ended, leading to the loosening of the muscles.
Additional factors like ambient temperature, the physical condition of the victim prior to death, and other environmental conditions can also affect the rate at which rigor mortis sets in and dissipates. Likewise, the presence or absence of joint disarticulation, as noted in archaeological findings, may suggest a longer period between death and burial, allowing decomposition to begin. Signs like significant joint disarticulation indicate that these bodies had begun to decompose prior to burial, thus loosening the connective tissues and joints. However, determining an exact time of death is a complex process that often requires more information and context than simply the presence or lack of body rigidity.
Furthermore, anecdotal reports and historical records of post-mortem examinations can offer insights into the timing of death and burial practices. For instance, in the case described, the quick burial and subsequent exhumation of a beaten girl for examination by a coroner shows the historical urgency of burying the dead quickly and the implications this might have on the understanding of post-mortem changes.
The letters in the diagram below represent index fossils
What is one possible explanation as to why index fossil T and the rock layer that it is associated with does not appear in Rock Layers #1?
A.) Erosion occurred
B.) There is no explanation
C.) It was subducted and melted into magma
D.) Too much sedimentation above the fossil crushed it
Which is a pair of opposing forces that act on water as it goes down through the soil?
A. Condensation and capillary action
B. Permeability and gravity
C. Capillary action and gravity
D. Porosity and capillary action
Answer:
C. Capillary action and gravity
Explanation:
Capillary action lets water "stick" to the walls of the soil, and gravity pulls it down, therfore opposing its force
Answer:
The correct answer is option C, that is, capillary action and gravity.
Explanation:
Capillary action plays an essential role in moving the water around. It is illustrated as the movement of water inside the spaces of a porous substance because of the forces of cohesion, adhesion, and surface tension.
Capillary action takes place as water is sticky, and due to the forces of cohesion and adhesion, the molecules of water are fascinated towards each other and stick to other components. Capillary action takes place when the adhesion to the walls is robust in comparison to the cohesive forces between the molecules of the liquid. However, capillary action is restricted by the forces that work against it, that is, surface tension and gravity.
atoms with high ionization energy allow their electrons to easily be taken
TRUE OR FALSE
Answer:
FALSE
Explanation:
Ionization energy is the minimum amount of energy required to discharge an electron from its orbital shell from an atom in ground electronic state. The closer the electron, that is to be discharged, is to the nucleus of the atom, the harder to remove it hence has high ionization energy. In addition, if the nucleus of the atoms has a higher mass and the electron is even closer, the higher the ionization energy.
Jamie is explaining to her classmates that she conducted an experiment over the weekend to see if adding more eggs to
a cupcake recipe would affect the taste and texture of her cupcakes. She told her classmates that she noticed her
cupcakes were moister and even taller.
She said she measured each cupcake and the ones made with 3 eggs instead of two were 0.25-05 centimeters taller
than the ones with only 2 eggs. She also said that the ones with more eggs seemed to be a darker shade than the ones
with fewer eggs. Jamie said the amount of eggs didn't affect how many cupcakes she could make. She was only able to
get 6 jumbo sized cupcakes with the recipe even if she added an extra egg.
es
Question:
List at least 2 qualitative and 2 quantitative observations that Jamie made in her experiment
Answer:
Change it up a bit ;)
Explanation:
Qualitative - Taste --how of the cupcakes taste and texture by adding more eggs and Sight --the an color of the cupcakes by adding more eggs
Quantitative - How tall the cupcakes rose with more eggs by measuring them
Answer:
The correct answer would be-
Quantitative observation: these are the observation that based on the quantitative measure or numbers.
1) cupcakes are .25 to 05 centimeter taller in cupcakes with extra egg.
2) in both conditions got only 6 jumbo size cupcakes even in cupcakes with extra egg.
Qualitative observation: these observations are the observations that are based on the quality of the human senses' look, taste, smell, sound and other.
1) The cupcakes are darker in shade with extra egg in them than other cupcakes.
2) The cupcakes with extra eggs are also moist than the cupcakes with less egg.
How do respiration and photosynthesis affect the carbon cycle?
Answer:
While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.
Find the total number of
atoms in each molecule.
Na3PO4
Answer:
8
Explanation:
There are 3 sodium atoms, 1 phosphorus atom, & 4 oxygen atoms.
3+1+4=8 atoms in total
A molecule of Sodium Phosphate (Na3PO4) contains a total of 8 atoms: 3 from sodium, 4 from oxygen, and 1 from phosphorus.
Explanation:The chemical formula Na3PO4 represents a molecule of Sodium Phosphate. In each molecule of Sodium Phosphate, there are 3 sodium (Na) atoms, 4 oxygen (O) atoms, and 1 phosphorus (P) atom, which gives us a total of 8 atoms.
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3. Describe two ways that humans influence the cycling of matter in ecosystems.
Humans influence the cycling of matter in ecosystems mainly through deforestation and pollution. Deforestation disrupts the nutrient cycle, and pollution leads to global warming, shifting the balance of ecosystems.
Explanation:Humans significantly influence the cycling of matter in ecosystems in several ways. One of the primary ways is through deforestation. When humans cut down forests, it disrupts the nutrient cycle, as trees play a crucial role in absorbing carbon dioxide and releasing oxygen into the atmosphere. Another way humans impact this cycle is through pollution. For example, when industries and vehicles release carbon dioxide and other harmful gases into the atmosphere, it impacts the cycling of matter by contributing to global warming, which can change the balance of ecosystems.
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Explain how water’s polarity is related to its boiling point
Answer:
Explanation:
The greater the forces of attraction the higher the boiling point or the greater the polarity the higher the boiling point. ... The other molecules are slightly polar and show the increase in boiling point with molecular weight which is normal. Instead, water boils at +100 C, which is very abnormal.
Hope this helps a little
The explanation of water’s polarity is related to its boiling point.
The greater the forces of attraction between molecules the higher the boiling point or the greater the polarity of the molecule the higher the boiling point.The other molecules are slightly polar and show the increase in boiling point with molecular weight which is normal. Instead, water boils at +100 °C, which is very abnormal.The boiling point of water molecule is higher due to its polarity and hydrogen bond.What is polarity of water?The polarity means that molecule contain both positive as well as negative charge endThe overall charge in water molecule is zero, its polarity is because of its shape.The hydrogen has positive end and oxygen has negative end.learn about polarity,
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Please help me!! Thank you!
Answer:
Explanation:
picture 1 = 3 point
picture 2 = squeze and bend
picture 3 = point 2
picture 4 = point 4
Chloroplasts produce energy through photosynthesis and oxygen-release processes, which sustain plant growth and crop yield. As such, chloroplasts are responsible for the biosynthesis of active compounds such as amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites.
Animal cells do not have a cell wall, in contrast to those of plants and fungi. Animal cells are flexible as a result of the absence of cell walls. It enables them to adopt various forms so they can specialize to perform specific tasks.
Root hair cells (black arrow pointing at one of the root hair cells) are single tubular root cells. The main function of root hairs is the uptake of water and nutrients from the rhizosphere or soil.
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Ethical guidelines require researchers to weigh the potential benefits of research against possible
A.
biases in the research design.
B.
independent variables in the study.
C.
damage to laboratory equipment.
D.
risks to study subjects.
Answer:
D
Explanation:
Humans are considered to have intrinsic dignity that can't be violated and is even protected by laws of human rights. Therefore, even when conducting experiments that will involve human subjected, it is expected by ethical standards of research are considered before being implemented. For example it is important that the experiment does not subject humans to any form of embarrassment, bodily harm, and psychological harm.
Answer:
its not D
Explanation:
wrong answer on gradpoint
Chromatin consists of long strands of material located within the nuclear membrane. True or False
Answer:
true░░░░░░░░░░░░░▄▄▄▄▄▄▄░░░░░░░░░░░░░░░░░░▄▀▀▀░░░░░░░▀▄░░░░░░░░░░░░░░▄▀░░░░░░░░░░░░▀▄░░░░░░░░░░░░▄▀░░░░░░░░░░▄▀▀▄▀▄░░░░░░░░░▄▀░░░░░░░░░░▄▀░░██▄▀▄░░░░░░░▄▀░░▄▀▀▀▄░░░░█░░░▀▀░█▀▄░░░░░░█░░█▄▄░░░█░░░▀▄░░░░░▐░█░░░░░▐▌░░█▀▀░░▄▀░░░░░▀▄▄▄▄▀░░█░░░░▐▌░░█░░░▄▀░░░░░░░░░░░░░░█░░░░▐▌░░░▀▀▀░░░░░░░░░░░░░░░░▐▌░░░▐▌░░░░░░░░░░░░░░░▄░░░░░░▐▌░░░▐▌░░░░░░░░░▄░░░░░█░░░░░░▐▌░░░░█░░░░░░░░░▀█▄░░▄█░░░░░░▐▌░░░░▐▌░░░░░░░░░░▀▀▀▀░░░░░░░▐▌░░░░░█░░░░░░░░░░░░░░░░░░░░░█░░░░░░▐▌▀▄░░░░░░░░░░░░░░░░░▐▌░░░░░░░█░░▀░░░░░░░░░░░░░░░░▀░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
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Explanation:
Since it is a brain cell, it must be true
Which organelle breaks down sugar molecules that supply energy to the cell
Mitochondria breaks down sugar molecules that supply energy to the cell
Explanation:
Process of breaking down of the sugar molecule in order to produce energy is known "cellular respiration". All this activity takes place in the mitochondria. It is also referred as the energy source of cell. It utilises the food to produce ATP, that produces energy.
Mitochondria has its own ribosomes and DNA. They can prepare their protein without being dependent upon the cell. Mitochondria multiplies through fission. Glucose is broken down to pyruvate in cell cytoplasm.This pyruvate when enters into mitochondria is converted to water and carbon dioxide.
Drag the labels to the image. The labels can be used more than once, but not all labels will be used.
Complete the model of the lactic acid fermentation process.
NADH
NAD
ATP
ADP
glucose
→
pyruvate
lactic acid
glycolysis
ADP
Answer:
Explained in the diagram below
Explanation:
-During anaerobic reproduction body makes use of the glucose in the body to produce energy
-Muscle cell deal with the pyruvate produced during anaerobic conditions by converting it into Lactate i.e. Lactic acid.
The equation is:-
Pyruvate + NADH ---Lactate dehydrogenase---> Lactic acid + NAD+
(Glycolysis)
-Lactic acid fermentation is used worldwide to produce foods like yoghurt, pickle etc.
Answer:
Hope this helps!! :)
Explanation:
In the tutorial, they have pictures that verifies this answer exactly! It's just written differently, but I promise it's the exact same thing! <3
Can someone please tell me the answer it’s due tomorrow
Answer:
Explanation:
1: B
2: C
3: B
4: A?
Independent Variable is the variable being changed, whereas the dependent variable is the variable depending on change.
Answer:
1. b. Amount of plant hormones added
2. c. Average height
3. b. 6
4. a. Group 1
Explanation:
1. This is what is being changed. This variable doesn't rely on anything else.
2. This is what is being measured. This variable relies on the independent variable in order to get the information needed.
3. The first group is not part of the experimental group because there are no hormones added to the water, which means that the plant grows naturally. All other plant groups have hormones added to them, making the results experimental.
4. This is the group that no hormones are added to the water. This group is being compared to the other groups in the experiment.
What three particles make up atoms?
Atoms are made up of three types of particles: protons, neutrons, and electrons. Protons are positive, neutrons are neutral, and electrons are negative.
Explanation:Atoms, the basic units of matter, are composed of three primary types of subatomic particles. The first type are
protons
, which carry a positive electric charge. The second type are
neutrons
, which have no charge. Both protons and neutrons reside in a region within the center of the atom known as the nucleus. The third type are the
electrons
, which carry a negative charge and move around the nucleus. The equal number of protons and electrons in an atom keep the atom neutrally charged.
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Compute bed occupancy percentage for adults and children
(A&C).
born (NB
Answer:
ummmm what
Explanation: