Answer:
Photon radiation
A high-energy photon beam is by far the most common form of radiation used for cancer treatment. It is the same type of radiation that is used in x-ray machines, and comes from a radioactive source such as cobalt, cesium, or a machine called a linear accelerator (linac, for short).
The speed of radioactive particles is also an important factor in medical use. Beta particles travel very fast. This, combined with their small size, gives them significant penetrating power. In cancer treatment, for example, beams of beta particles can be created outside the patient's body and directed at tumors.
Answer:
b
Explanation:
list two examples of temporary change in human
Answer:
#IN GIRLS
* adolsence
* menstruation
#IN BOYS
* penis strts turning big
*beard starts coming of face
Answer:
Changes in humans
Explanation:
Girls develop breast and start their period.
Where as boys develop a deeper voice and facial hair will start to appear.
4 substances containing nitrogen or phosphorous that are related to biological processes
Answer:
DNA, RNA, ATP, and the phospholipids that form all cell membranes
Explanation:
What are groups of great white sharks believed to have established
Answer:
Mackerel sharks
Explanation:
Answer:
dominance hierarchies
Explanation:
When studying predator prey relationships, the predator population _____ the prey population.
A. Is not affected by
B. Lags behind
C. Fluctuates before
D. Does not affect
Answer:
I would say B
Explanation:
When it comes to predator and prey, the prey will always have a higher population than the predator.
10 POINTS !!! Why is it risky to build something whose natural frequency can be matched by
external vibrations?
Answer:Most objects have at least one natural frequency of vibration. If a nearby object vibrates at the same frequency, it can cause resonance. Resonance is an increase in amplitude of a vibration that occurs when external vibrations match an object's natural frequency.
Explanation:
It is risky to build something whose natural frequency is matched with external vibrations because of ; The effect of resonance
When an object constructed has a natural frequency which is equal to the frequency of a nearby external vibration, the amplitude of the vibration of the object will increase due to the resonance effect which occurs because the external frequency matches up with the natural frequency of the constructed object.
The negative effect of resonance is the increase in the amplitude of the vibration of the object which might lead to the partial or complete collapse of the constructed object.
Hence we can conclude that It is risky to build something whose natural frequency is matched with external vibrations because of ; The effect of resonance
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The evolution of new organs usually builds on preexisting structures that are modified in form and sometimes function. The embryos of fish, amphibians, reptiles, birds, and mammals all have pharyngeal pouches or gill slits. These pouches develop into gills in adult fish and they are used to absorb oxygen from their watery environment. These same pouches become parts of the in_________ humans.
a) eyes and lungs
b) ear and throat
c) eyes and nose
d) lungs and heart
Answer:
lungs and heart
Explanation:
lungs and heart is the answer because human lungs is use for gas exchange during respiration or while you breathe. When humans breathe, the lungs absorb oxygen from the inhaled sir into the blood and carbondioxide leaves the blood when we breathe out. The heart pumps the blood, and oxygenated blood are carried in the blood when air is inhaled and carbondioxide leaves the blood when you exhale. The blood carries nutrients and oxygenated blood. Therefore, lungs and heart work hand in hand in absorbtion of oxygen from it's environment.
Jeffry was wondering why when he made breakfast, that after he was done cooking, the mass of everything he used was not the same. What best
describes why this is so, according to the law of conservation of mass.
A: cooking causes water vapor to escape so it cannot be added to the mass
B: cooking makes things solid and that adds to the mass
C: cooking changes the matter so it is different
D: cooking did nothing so he measured the mass wrong
Answer:
the answer is b guys
Explanation:
cooking makes things solid and that adds to the mass
mark brainliest!
Which property of matter is conserved in chemical reactions and shown by balanced equations?
mass
O volume
Odensity
O shape
Answer:
Density is conserved in chemical reactions and shown by balanced equations
what is the correct order of the layers of earth starting deep in the center?
Answer:
from deepest to shallowest, the inner core, the outer core, the mantle and the crust.
Explanation:
Starting deep in the center, the correct order of the earth's layers is the inner core, mantle, and outermost crust, where the inner core has a higher temperature and pressure than other layers.
What is the earth?The earth is made up of a core, a mantle, and the outermost crust, where the core has a large pressure and, despite the high temperature, the substance remains solid in nature, and on the crust region, the lithosphere is present, such as the mountains, water bodies, etc. The earth has atmospheric layers, which are further subdivided into the troposphere, stratosphere, mesosphere, thermosphere, and exosphere, and each layer has its own properties, such as the ozone layer in the stratosphere. Life is abundant on earth as a result of all of these favorable conditions.
Hence, starting deep in the center, the correct order of the earth's layers is the inner core, mantle, and outermost crust.
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HELP ASAP
What is the main part of the cells of a plant that contributes to it being an autotroph?
A . ribosomes
B . chloroplasts
C . vacuoles
D . mitochondria
Autotroph means that it can create it's own food and get the energy from other sources (like eating things)
The thing that makes plants autotrophs are chloroplasts.
So the answer is: B
Which of the following
is not a type of lipid?
A. Fat
B. Steroids
C. Sugar
D. Waxes
Pretty sure the answer is Sugar, Correct me if I'm wrong
Sugar is not a lipid, but it is a carbohydrate. Thus, option C is correct.
What is lipid?Lipid is type of biomolecule, consisting, fats, steroids, waxes, and fat soluble vitamins such as A, D, E, K and others. It is an organic molecule which is hydrophobic or amphiphilic molecule which is insoluble in the water.
Fatty acids are included in the class of carboxylic acids which has long hydrocarbon chain and terminal carboxyl group (COOH). As compare to other molecules found in food that are carbohydrates and proteins, lipids contain more than twice energy.
Lipids play significant role in cell signaling as lipid signaling, which is very vital part of it. It is also involved in immunity, hormones such testosterone, estrogen, cortisol. Fat soluble vitamins play an important role in nutrition.
Therefore, sugar is carbohydrate not lipid. Therefore, option C is correct.
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Myasthenia Gravis is a disease characterized by the production of antibodies against nicotinic acetylcholine receptors resulting in a decrease of functioning receptors at Motor end plates. Physiologically, what might you expect to happen as a result?
a. clonus
b. increased frequency of motor neuron firing
c. chorea
d. paralysis of skeletal muscle
Answer:
The correct answer is - option d.
Explanation:
Myasthenia gravis is an autoimmune condition in which nerve endings are targeted due to the body produces antibodies against receptors of nicotinic acetylcholine which results in less or no functioning of nerve endings of motor neurons mostly.
Options A, B, and C all three conditions are all due to an increase in muscle movement which is not the case as it causes weakness in the muscles due to less functioning in motor end plates.
What is the relationship between species richness - the number of species in
an ecosystem - and ecosystem services?
A. Species richness and ecosystem services are not related.
B. Greater species richness results in more ecosystem services.
C. Greater species richness results in fewer ecosystem services.
D. Species richness and ecosystem services are the same thing.
Answer:
b. greater species richness
Explanation:
because its b
Answer:
B
Explanation:
good luck
In aluminum carbonate what is the anion?
Answer:
AI2(CO3)3
Explanation:
this is the structure and chemical and physical and chemical properties for this chemical name
What does the number 3 in 3p^5 represent? *
Name the four kingdoms of Eukarya, and give two characteristics of each?
Answer: The four kingdoms of Eukarya are: Animalia (Metazoa), Plantae, Fungi, and Protista.
1) Animalia:
- They are multicellular organisms that do not possess chlorophyll!
- They are eukaryotic organisms!
2) Plantae:
- They are multicellular organisms with walled and frequently vacuolate eukaryotic cells!
- These contain photosynthetic pigment in plastics!
3) Fungi:
- Fungi are eukaryotic organisms means they have a true nucleus which is enclosed in membranes.
- They are non-vascular organisms!
4) Protista:
- Protists have a nucleus containing their DNA.
- They also have other membrane-bound organelles, such as mitochondria and the endoplasmic reticulum!
HOPE IT HELPS! BRAINLIEST PLEASE!
The four Kingdoms of Eukarya are ; a) Plantae, b) Animalia, c) Protista and Fungi
Kingdoms of Eukarya Characteristics
A) Plantae Possession of vacuolate eukaryotic cells
Presence of chlorophyll
B) Animalia Absence of chlorophyll
Composed of eukaryotic cells
c) Protista Presence of endoplasmic reticulum
Presence of a nucleus containing DNA
D) Fungi Non - vascular organisms
presence of membrane enclosed nucleus
Eukarya is domain composed of kingdoms whose organisms have their nucleus enclosed within a membrane shaped like an envelope. and the organisms that fall within this domain are grouped into four which are , Animals ( Animalia ) , plants( plantae) , protists ( protista ) and Fungi.
Hence we can conclude that the four kingdoms of Eukarya are Plantae, Animalia, Protista and Fungi.
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What is the set of interacting organs and tissues that fulfill one or more body functions ?
Answer:
An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
The set of interacting organs and tissues that fulfill one or more body functions is done by an organ system.
What do you mean by Tissues?Tissues may be defined as a biological organizational group that lies between cells and a complete organ. It is synthesized by the accumulation of various cells.
An organ system is a biological system comprising a set of organs that work concurrently to perform one or more functions in the body of an organism.
Each organ has to play a specific role in the body of a plant or animal. This property depends on the distinct types of tissues.
Therefore, the set of interacting organs and tissues that fulfill one or more body functions is done by an organ system.
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What is one purpose for the peer-review process in scientific research?
Answer:
Its used as validity, and quality of the articles. The main purpose of it is to filter out poor or invalid articles.
Explanation:
help me please!!
the thing is 42 points it’s the most i could put
Answer: I
Explanation:
I’m pretty sure the answer is i
Answer:
h
Explanation:
On a weather map, wind speeds are related to____.
A. the location of elevation changes
B. the spacing of isobars
C.the spacing of isotherms
D. the location of fronts
produces hydronium ions
a) acids
b)base
c) both
Answer:
A: Acid
Explanation:
None
Answer: the answer is Acids
Explanation:
An acid is a compound that dissolves in water to make a particular kind of solution, and hydronium ions can be formed when an acid is present in water or simply in pure water
Distinguish the types of forgetting: anterograde amnesia, retrograde amnesia, encoding failure, retrieval failure, and interference (both retroactive and proactive).
Answer:
Anterograde amnesia is the inability to create new memories after the onset of amnesia, while memories from before the event remain intact. Brain regions related to this condition include the medial temporal lobe, medial diencephalon, and hippocampus. Anterograde amnesia can be caused by the effects of long-term alcoholism, severe malnutrition, stroke, head trauma, surgery, Wernicke-Korsakoff syndrome, cerebrovascular events, anoxia, or other trauma. Retrograde amnesia is the inability to recall memories made before the onset of amnesia. Retrograde amnesia is usually caused by head trauma or brain damage to parts of the brain other than the hippocampus (which is involved with the encoding process of new memories). Brain damage causing retrograde amnesia can be as varied as a cerebrovascular accident, stroke, tumor, hypoxia, encephalitis, or chronic alcoholism. The there is encoding failure. Encoding is the process of converting sensory input into a form able to be processed and stored in the memory. However, this process can be impacted by a number of factors, and how well information is encoded affects how well it is able to be recalled later. On the other hand, retrieval failure is the failure to recall information in the absence of memory cues. Proactive interference occurs when old memories hinder the ability to make new memories. In this type of interference, old information inhibits the ability to remember new information, such as when outdated scientific facts interfere with the ability to remember updated facts. This often occurs when memories are learned in similar contexts, or regarding similar things. It’s when we have preconceived notions about situations and events, and apply them to current situations and events.Retroactive interference occurs when old memories are changed by new ones, sometimes so much that the original memory is forgotten. This is when newly learned information interferes with and impedes the recall of previously learned information. The ability to recall previously learned information is greatly reduced if that information is not utilized, and there is substantial new information being presented. This often occurs when hearing recent news figures, then trying to remember earlier facts and figures.
Explanation:
Found it on a similar question
What is the speed of sound in air?
A 1000 meters per second
B. 335 meters per second
C.25 meters per second
D. 2500 meters per second
Answer:
its D
Explanation:
source: trusted me bro....
Answer:
it's actually: B. 335 meters per second
Explanation:
An exceptionally rainy spring caused many mud slides that covered most of the grass plants and their seeds in soil too deep for successful sprouting. A few seeds were covered in less soil and were able to sprout and reproduce
A. Gene Flow
B. Genetic Drift
Which process uses the sun's energy to convert water on Earth's surface into water vapor? (3 points)
a
Condensation
b
Evaporation
c
Precipitation
d
Transpiration
Answer:
Evaporation is the answer to your question
At very large distances from the Sun, its corona turns into the solar wind.
True
False
Answer:
the question really didnt make sense to me so false..
Explanation:
false
Which career would best suit Callie's interests in the scenario below?
Callie would like to pursue a career where she can research ways to improve the nutrition and treatment of domesticated animals
animal Scientist
animal handler
vetenaran
baner
Answer:
Animal Scientist
Explanation:
What drives plate movement?
A. Convection currents in the mantle.
B. Convection currents in the inner core.
C. Convection currents in the crust.
D. Oceanic currents
Answer: The answer is A, convection currents in the mantle.
Explanation: Plate tectonics move because they are carried along by convection currents in the upper mantle of the planet (the mantle is a slowly flowing layer of rock just below Earth's crust). Hot rock just below the surface rises and when it cools and gets heavy, it sinks again.
The weather in a location is related to
a Air temperature
b Precipitation
c Wind speed and direction
d All of the above
Answer:
all of the above
Explanation:
1) Describe the process of osmosis
2)What is ostmotic pressure?
3)Describe the importance of a semipermeable membrane in osmosis?
4)Explain the connection between isotonic solutions and osmosis
5)Why is osmosis referred to as an example of facilitate diffusion?
ANSWER THESE CORRECTLY AND YOU WILL GET 55 points!