which example best describes how an X-ray machine works?
20 A QUESTIONS
O
Switching a flashlight on and off to transmit a message
0
Removing the batteries from a flashlight to keep a room dark
O Putting your hand in front of a flashlight beam to make a shadow
O
Shining a flashlight beam on a mirror to brighten a room
SUBMIT
Explanation:
putting hand in front of flash light
Answer: C
Explanation:
I just answered the question on a p e x
You are evaluating the effect of different types of fertilizers on plant growth. You plant 12 tomato plants and divide them into three groups, where each group contains four plants. To the first group, you do not add fertilizer and the plants are watered with plain water. The second and third groups are watered with two different brands of fertilizer. After three weeks, you measure the growth of each plant in centimeters and calculate the average growth for each type of fertilizer. Identify the independent variable, dependent variable, control group, and experimental group from this experiment?
Answer:
Control group - the plant group which has not received the fertilizers treatment.
Experimental group- the groups treated with different varieties of fertilizers.
Independent variable- amount of water and fertilizers
Dependent variable- growth of plants
Explanation:
A scientific experiment is performed in a way that the experimental samples are classified into the control and experimental groups. Also, the experiment involves various variables to be studied which can be classified as an independent variable and dependent variable.
In the given question, the experimental samples are:
1. Control group- The samples which are not provided with the variable being studied like the experiment is performed to test the effect of fertilizers and "the plant group which has not received the fertilizers treatment" can be considered the control group.
2. Experimental group- the samples in which the variable to be studied are provided with that is "the groups treated with different varieties of fertilizers."
In the given question, the variables are:
1. Independent variable- the variable which can be changed or modified or can change on their own like "amount of water and fertilizers" in the experiment.
2. Dependent variable- the variable which is being tested, can be measured and is dependent on an independent variable like the " growth of plants" in the experiment.
What is something that happens when you change the wavelength?
Answer:
efd
Explanation:
imk a black ni gge r
Indicate whether or not the following functions are performed by the excretory system.
____excreting waste materials
____excreting blood
____maintaining pH balance
____maintaining body temperature
____maintaining salt balance
____maintaining hormone levels
____maintaining water balance
Answer:
1. yes
2. no
3. yes
4. yes
5. yes
6. no
7. yes
Only excreting blood is the function that is not performed by the excretory system.
What do you mean by the Excretory system?
The excretory system may be defined as the system that consists of a pair of kidneys, ureters, and urinary bladder. It removes wastes from the body.
Excreting waste materials, maintaining pH balance, maintaining body temperature, maintaining salt balance, maintaining hormone levels (aldosterone), and maintaining water balance are all the functions that are performed by the excretory system.
Therefore, only excreting blood is the function that is not performed by the excretory system.
To learn more about the Excretory system, refer to the link:
https://brainly.com/question/1001081
To maintain a healthy diet, you should try to eat a diet rich in:
O green vegetables
2% milk
red meat
fruit juice
Answer:
I am not sure whether or not this is a statement or a question, but a healthy diet would consist of more diversity. You could live off of that and maintain a healthy body, but it would not be recommended.
Explanation:
Answer:
green vegetables
Explanation:
In a co-dominant type of inheritance, a heterozygous A blood type female
is crossed with a homozygous B blood type male. What are the chances of
producing an offspring that is A blood type?
0%
25%
50%
75%
Answer:
0%
Explanation:
Which of the following might explain how complex viruses evolved?
© A. Icosahedral viruses reproduces with helical viruses.
OB. Mutations in viral genes gave rise to offspring with variations in their shape.
© C. Viral genes mutated while dormant to produce new variations.
OD. Viruses started infecting new host cells.
Answer:i just took a test w this on it n i put D
Explanation:
The motion of an object can be described by its
OA. speed.
OB. position.
OC. direction
OD. all of these
Answer: the correct answer is d) all of these . here so the other person can get brainlest . have a good day/ night!!
Explanation:
Which of the following lists the order of taxonomic levels from the largest to the smallest group?
domain, kingdom, class, order, family, phylum, genus, species
species, genus, family, order, class, phylum, kingdom, domain
class, family, order, domain, kingdom, phylum, genus, species
domain, kingdom, phylum, class, order, family, genus, species
Answer:
domain, kingdom, phylum, class, order, family, genus, species
Explanation:
which is d on edge 2021 :)
Domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group.
What is taxonomy?Taxonomy is a branch of science which deals with the classification of organisms on the basis of similarities and differences. It starts from domain and ends with species so we can say that domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group
Learn more about taxonomy here: https://brainly.com/question/1304906
PLEASE HELP I WILL BE GIVING THE BRAINLIEST AND 15 POINTS!!!!!!!!
The woolly mammoth was a relative of elephants that lived in the far north. There is much debate in the scientific community about what caused the extinction of mammoths. Climate models show that changing weather patterns stressed mammoth populations. Hunting by humans may have also reduced populations. The youngest mammoth remains on a continent are 10,000 years old.
A group of scientists is trying to bring mammoths back by modifying elephant DNA. The new animals would have a mixture of elephant and mammoth genes. What will be the effect of the new genes?
A. The new genes will produce different proteins.
B. The new genes will prevent DNA replication.
C. The new genes will require gene therapy.
D. The new genes will not have RNA.
Answer:
C
Explanation:
Because when new genes are created they won't be able to adapt easily, so they will require gene therapy so they will be able to adapt easier.
Hope this helps you. :)
Have a good day!
The new genes will produce different proteins. Therefore, option (A) is correct.
By modifying the DNA of elephants to include mammoth genes, the scientists aim to introduce genetic variations that were present in the woolly mammoth. These genetic variations would result in the production of different proteins compared to the proteins produced by elephants.
Proteins are essential molecules that perform a wide range of functions within living organisms, including structural support, enzymatic activity, and regulation of biological processes. Therefore, the introduction of new genes from mammoths would lead to the production of different proteins, potentially affecting various traits and characteristics of the modified elephants.
Learn more about proteins, here:
https://brainly.com/question/30986280
#SPJ4
Which of the following ecological levels is correctly paired with its description?
A) Organism - all of the species living in a given area
B) Community - a group of one species living in a given area
C) Population - the regions on Earth that can support life
D) Ecosystem - all of the living and nonliving factors in an environment
E) Biosphere - anything that meets all of the characteristics of life
The correctly paired ecological level with its description is the option D. Ecosystem - all of the living and nonliving factors in an environment, among given options.
An ecosystem is a geographic region or area where all the living factors including animals, plants, bacteria, and others interact with all the physical or non-living factors such as landscape, humidity, water, and many more.
Other given ecological level and their description:
Organism - an organism is the living being that is the simplest form of ecological level composed of organ systems.Community - It is a population with similar characteristics that live in a particular area.Population - a group of members of a particular species living and interbreeding within a given area.Organisms > Population > community > ecosystemThus, the correct answer would be option D.
Learn more about ecological level:
https://brainly.com/question/1323075
Both rock and bodies of water are considered a type of
A) water
B) soil erosion
C) reservoirs
in cycles of matter. When rock is exposed for mining,
A) water
B) soil erosion
C) reservoirs
can readily transport nutrients from rock to aquatic
ecosystems. Runoff that carries excess nutrients can cause algae blooms.
The effects of
A) water
B) soil erosion
C) a reservoir
also increase water pollution and can
clog waterways.
Check
Answer:
c
a
b
Explanation:
Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.
In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.
Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.
What is soil erosion?The removal of the top of the soil by water, wind and human activities has been called soil erosion. The reason due to which soil erosion takes [place is that trees should be planted in several rows to check the speed of the wind. This reduces soil erosion because of wind. Because the rivers cause soil pollution, dams are built in the upper course of the rivers to check soil erosion.
Soil erosion has happens when the dirt has been exposed to the high winds, heavy rains, and rushing water. In few circumstances, human activities, like farming and land clearance, expose soil to erosion. Soil erosion has been considered as the removal and transfer of the top layer of soil from its original location to another due to high winds and fast-running precipitation.
Therefore, Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.
In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.
Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.
Learn more about rock on:
https://brainly.com/question/19930528
#SPJ2
How can you decrease the effort force needed to push a weight to the top of the ramp? A) cover the surface with carpet B) increase the length of the ramp C) increase the height of the ramp D) decrease the length of the ramp
Answer:
B) increase the length of the ramp
Explanation:
Less force is needed to move the object over a longer distance.
Answer:
You can decrease the effort force needed to push a weight up the ramp if you increase the length of the ramp. You could also decrease the height of the ramp.Lengthen the ramp, decrease the mass of the object, use a machine can you decrease the effort force needed to push a weight
Explanation:
A ramp is an example of an inclined plane. Think back to the example of the ramp and the moving truck. The ramp reduced the amount of force needed to lift the box by moving it over a greater distance. The longer an inclined plane, the less force is required to move an object upward.
I need help ASAP please
Which is a
multicellular organism:
an atom, a molecule, a
cell, or a Komodo
dragon?
Answer:
Komodo dragon.
Explanation:
Animals, plants, and fungi are multicellular organisms
What percent of the offspring will be white , if we cross two pink tulips? 100 % 25 % 50 %
individuals joining a population is an example of
Make a
claim about whether producers or primary
consumers would have a larger population
in an ecosystem. Support your claim with
evidence, and explain your reasoning.
Answer:
The producers have a larger population, The population gets smaller every level by 10%.
Explanation:
Found: A Plant-Eating Spider. Spiders are meat-eaters. Until recently, scientists thought that was true for the roughly 40,000 spider species in the world. Now, researchers have discovered a spider that eats mostly plants. Bagheera kiplingi, a jumping spider, lives in Central America and Mexico. It nests in the leaves of acacia tree. Scientists have long known that ants live in these trees. The ants eat the tree’s little yellow vegetables. But scientists had no idea that the spiders eat the vegetables too. Is competition likely to occur between the Bagheera kiplingi and ants living in acacia trees? Support your answer. *
Answer:
Yes, competition is likely to occur
Explanation:
Competition is an ecological interaction between organisms of the same or different species, resulting in the detriment of one of the organisms. Competition is generally caused when organisms in an ecosystem occupies the same niche i.e. they rely on the same ecological resource, which could be food, mate, space etc.
The case described in this question involving a Bagheera kiplingi (jumping spider) and acacia ants will likely result in competition because they both occupy the same habitat and feed on the same food (vegetable plant). The two organisms will have to compete for this limited resource, hence, it is regarded as an INTERSPECIFIC COMPETITION because it involves two different organisms.
which statement would most likely be used to describe variation
Answer:
"Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation. The correct option among all the options that are given in the question is the second option or option "B".
Explanation:
Answer:
Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation
What is pulping
Help me please
Answer: to crush into a soft, shapeless mass OR a process that extracts fibrous material, cellulose, from wood or other raw material as a prelude to paper making
Hope this helps
Explanation:
Piyush is asked to classify samples of bacteria as bacilli, cocci, or spirilla.
Which is the most useful strategy for him to follow?
A. Analyze the DNA of the bacteria.
B. Raise colonies of the bacteria in several growth media.
C. Use a microscope to observe the shapes of the bacteria.
D. Use a microscope to observe the colors of the bacteria.
Answer:
C.Use a microscope to observe the shapes of the bacteria.
Explanation:
Bacteria is a type of pathogenic micro-organisms. They are mostly known to cause diseases and can be viewed using an electron microscope.
Bacteria have different shapes and colors. The shapes include bacilli(rod shaped), cocci(spherical)or spirilla( twisted).
The most useful strategy will be to use a microscope to observe the shapes of the bacteria.
If the eyes and jaws of a corpse appear stiff, about how much time has likely
passed since death?
Answer:
between 1 and 6 hours and believe the average though is 2-4
Answer:
big gangs
Explanation:
Using the graphic provide, identify the products of photosynthesis.
A) sunlight oxygen, water
B) sugar ( glucose ), oxygen
C) sunlight, water, carbon dioxide
D) sunlight,carbon dioxide, water
Answer: C
Explanation: The carbon dioxide enters the leaves of the plant through small pores called stomata. ... The plant uses sunlight as energy to perform this chemical reaction. Photosynthesis separates carbon dioxide and water — known as CO2 and H2O, respectively — into their individual molecules and combines them into new products.
Answer:
guys c) was wrong the answer was b)
Explanation:
how are the DNA strands organized?
Answer:
double-stranded DNA are tightly looped, coiled, and folded so that they fit easily within the cell. ... In both eukaryotes and prokaryotes, this highly compacted DNA is then arranged into structures called chromosomes.
Explanation:
Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct
answers.
A. Auxin production stimulate one final growth spurt before winter arrives,
B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments.
C. Xylem and phloem fill with ions and organic substances that prevent freezing.
D. Meristems form thick scales to protect next year's buds from cold winter temperatures,
Answer: Option A, C and D.
Explanation:
Cold temperature affects plants that cannot adapt to it and can eventually lead to their deaths.
If the temperature, and therefore the metabolism, remain low for an extended period, plant quality will suffer, and death may occur. A period of cold weather may also alter plant growth, as when certain vegetables “bolt,” or produce seed stalks, in response to several days at low temperatures
But maple plants in temperate region has develop some characteristics or adaptions that help its survive cold temperatures. Maple plants can tolerate frost and light freezes for short duration because they are cool plants and development characteristics to do so.
Auxins in them stimulate one final spurt before winter. Their xylems and phloems are filled with ions that prevent freezing.
They have a thick meristems which form thick scales to protect next year's buds from cold winter temperatures,
Which of these is true of fetal development by the end of the third trimester?
A. The placenta is absorbed by the uterus.
B. The fetus can survive outside the uterus.
c. All development is complete.
D. All growth is complete.
Answer:
B. The fetus can survive outside the uterus.
Explanation:
The third trimester starts in the wekk 28 (month 7 ) of fetal development and lasts until the birth pf baby, that is around week 40 (month 9) of pregnancy.
There are several changes occur in the thrid trimester of the fetal development such as hearing and visual has developed and the internal organs including the heart, lungs, intestines and stomach has developed enough.
So, at the end of fetal development of the third trimester as all the body organs have grown and developed, a fetus can survive outside the uterus.
The correct option is B.
Answer:
Option B
Explanation:
During the third trimester, the fetus continues to grow in weight and size however the body systems finish maturing. In fact, both mother’s body and the fetus continue to grow and change. Lungs, brain and kidneys keep maturing. Fetus position itself head-down and is 6 to 9 pounds in weight. Skull bones are soft but fetus become able to suck its thumb and cry. By 38 to 40 weeks, the lungs have matured fully . The end of third trimester marks the period when the fetus is ready for delivery. Hence option B is the correct answer
How does digitizing images make it easy to transmit images?
Answer:
Digitizing means converting something into digital form.
Digitizing image means converting any image into digital format and the image will be organized into bits or pixel. The bits or numbers are then processed by a computer and output is generated as visible-light image,
There are several advantages of digitizing images and one cam easily tansmit images:
A digitizing image is saved in pixel or square, when computer processes teh pixel or square it gives the image. More number of pixel means better quality of image.The digitized image can be easily send or share in compressed form which takes less space in computer and without affecting quality.Digitized images helps to easily transmit real image without any blur effect.Hence, digitizing image is common now a days to transmit images of better quality in easy way.
what is the main factor in the poor health of undeveloped countries?
a. too few doctors
b. more imports than exports
c. industrial pollution
d. infectious disease
the answer is A.Explanation:
The diagram shows a normal red blood cell and a shrunken red blood cell, both of which are in salt water.
In which direction did the water move to make the red blood cell shrink? Why did water move in that direction?
Answer:
The red blood cell shrank because water moved out of the cell, which happened because the concentration of salt outside the cell was greater than the concentration of salt inside the cell. Because the salt molecules take up space in the salt water, the concentration of water outside the cell was less than the concentration of water inside the cell. Therefore, water moved out of the cell from the area of high concentration to the area of low concentration, causing the cell to shrink.
Explanation: This was the sample response
