Answer:
Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses.
Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding. In those cases, there is an advantage of having friction.
Quite often uses of frction can be seen from how things would be without friction. Without friction, you would not be able to walk, drive a car, or hold objects. Pens and pencils would not work.
Explanation:
Answer:
Friction allows people and objects to move. It provides traction for an object to start moving or change direction. It can also give people a better grip on objects. Finally, friction keeps objects in place when they are set down.
Explanation:
Sample Response
what is the realignment of minerals are called?
Answer: the realignment of minerals is called METAMPORPHISM
in rocks
Explanation: hope this helps if u need more explanation comment in the comment section
1. You feel thirsty so you drink a large glass of water. A short time after
drinking, the water levels in the body return to normal. What system
senses that there are low water levels in the body and begins the process
of returning the body to homeostasis?
A-Muscular
B-Nervous
C-Respiratory
D-Cardiovascular
Answer:C
Explanation:sry u already got an answer
How do humans study and measure caves at the Yucatan Peninsula?
Answer:
when i first read this i thought it said penis
Explanation:
GIVE ME ATTENTION
Answer:
They use different technological devices to measure caves at the Yucatan Peninsula.
Explanation:
Background Reading:
Human presence on the Yucatán Peninsula reaches back to the Late Pleistocene. Osteological evidence comes from submerged caves and sinkholes (cenotes) near Tulum in the Mexican state of Quintana Roo. Here we report on a new skeleton discovered by us in the Chan Hol underwater cave, dating to a minimum age of 9.9±0.1 ky BP based on 230Th/U-dating of flowstone overlying and encrusting human phalanges. This is the third Paleoindian human skeleton with mesocephalic cranial characteristics documented by us in the cave, of which a male individual named Chan Hol 2 described recently is one of the oldest human skeletons found on the American continent. The new discovery emphasizes the importance of the Chan Hol cave and other systems in the Tulum area for understanding the early peopling of the Americas. The new individual, here named Chan Hol 3, is a woman of about 30 years of age with three cranial traumas. There is also evidence for a possible trepanomal bacterial disease that caused severe alteration of the posterior parietal and occipital bones of the cranium. This is the first time that the presence of such disease is reported in a Paleoindian skeleton in the Americas. All ten early skeletons found so far in the submerged caves from the Yucatán Peninsula have mesocephalic cranial morphology, different to the dolicocephalic morphology for Paleoindians from Central Mexico with equivalent dates. This supports the presence of two morphologically different Paleoindian populations for Mexico, coexisting in different geographical areas during the Late Pleistocene-Early Holocene.
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cafeology
Why are proteins important to the survival of animals?
A.Proteins provide energy storage for cells.
B. Proteins provide genetic information to cells.
C. Proteins provide structural functions for the body.
D. Proteins provide the body with energy.
Answer:
C. proteins provide structural functions for the body.
Explanation:
Proteins play a key role in the healthy of animals such as building and repairing muscles and other body tissues of the animal, it is needed to form new skin cells, grow hair, build muscle tissue etc.
A total of 100 Students and 35 chaperones are going on a field trip to the Smithsonian institution in Washington DC write each ratio in simplest form
Answer:
Ratio of students to chaperones = 20 / 7
Explanation:
Given:
Total student = 100
Total chaperones = 35
Find:
Ratio of students to chaperones
Computation:
Ratio of students to chaperones = 100 / 35
Ratio of students to chaperones = 20 / 7
A kitten might have genes for poor vision, but it could learn to...
Answer:
improve its eye power
Explanation:
I really dont know, but I think its correct
The invention of what instrument allowed the observation of cells.
Answer:The Microscope
Explanation:
30. Which substance would most likely be in the cell
walls of an organism with chloroplasts and tissues?
A. peptidoglycan
C. hyphae
B. chitin
D. cellulose
Answer:
D. cellulose
Explanation:
:>
An organism having chloroplasts and tissues most likely has cellulose in its cell walls.
The correct answer is D
Simply put, what is cellulose?a complex carbohydrate that is the main component of plant cell walls and is typically obtained as a white stringy substance from plant matter (such as wood or cotton) that is used in the production of various products (such as rayon and paper). Another way to say this is that cellulose comes from plants.
Where does cellulose come from?A carbohydrate called cellulose is present in plant cell walls. A polysaccharide structure makes up the carbohydrate. Several sugar molecules are linked together chemically to form a lengthy chain known as a polysaccharide. Chitin, glycogen, cellulose, and starch are a few examples of polysaccharides.
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A researcher has used in vitro mutagenesis to mutate a cloned gene and then has reinserted the mutated gene into a cell. To have the mutated sequence disable the function of the gene, what must then occur
Answer:
recombination resulting in replacement of the wild type with the mutated gene
Explanation:
Recombination is a process of the formation of new alleles when the original ones are broken down into bits and then ‘recombined’.
When mutation of a cloned gene occurs and the mutated gene is reinserted into a cell, the mutated sequence gene function will have to be disabled which involves recombination resulting in replacement of the wild type with the mutated gene.
HELP ASAP!!
What factor most influences whether a resource is classified as renewable or
nonrenewable?
A. The consumption rate of the resource
B. The availability of the resource
C. The length of time the resource takes to form
D. Whether the resource is biotic or abiotic
Answer:
C
Explanation:
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what is an enzyme i will mark brainiest
Answer:
a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Answer:
Enzymes are proteins that act as biological catalysts. Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.
Explanation:
Hope this helps, Brain-List?
Help please I will give Brainly
Answer:
(C)the option is already correct
Which of the following waste products of mining poses the greatest health risk?
1.radionuclides
2.dust
3.carbon
4.metal
Answer:
1
Explanation:
Radionuclides are waste products of mining poses the greatest health risk.Thus ,option 1 is correct.
What is radionuclide?
A radionuclide or is a nuclide that has excess energy to make it unstable.
The extra energy can be utilised in three ways:
Discharge from the nucleus as gamma radiation.Transferred to one of its electrons to release it as a conversion electron Used to create and discharge new particle from the nucleus.Several health issues are arise due to radionuclide.
Cancer is the major disease caused due to radionuclide that affects a large number population.
Radionuclide plays a vital role in increasing the mortality rate.
Therefore, radionuclides is the waste products of mining poses the greatest health risk.Thus option 1 is correct .
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What does the process of natural selection involve?What does the process of natural selection involve?
A.
preservation of disadvantageous genetic mutations
B.
preservation of advantageous genetic mutations
C.
preservation of all species
D.
preservation of all members of a species
Answer:
B. preservation of advantageous genetic mutations
Explanation:
The process of natural selection involves the preservation of advantageous genetic mutation in a given population.
Natural selection is one of the key factors that ensures the evolution of organisms.
Desired traits that are able to survive adverse conditions like disease, food shortage, natural disasters are favored by the process of natural selection. Traits that also undergo advantageous genetic mutation in order to get a competitive advantage is also accrued to natural selection.Which of the following is NOT a concept related to photosynthesis?
A
occurs in the roots
B
allows plants to grow
C
plants making a waste product
D
occurs in the chloroplast
Answer:
the answer is C
Explanation:
c is the correct answer
HELP ASAP
Which of the following choices represents the approximate percentage of geologic time that humans have existed on Earth since its origin?
less than 1%
1.8%
11.8%
more than 25%
Answer:
less than 1%
Explanation:
The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.
The earth is about 4.6 billion years and much of its history has been without the present of human activities.
Hominis were the first human to appear on the surface of the earth. This was in the Miocene epoch which was about 6 million years ago. Compared to the age of the earth, this time lapse is very small and not up to 1%. Life first appeared on earth about 3.5billion years. Since then evolution has taken its due course to give what we have today.
Witch if the following are prime colours
A:,
B:,⚫️,
Answer:
only one colour is here
Explanation:
please recheck your question
Answer: B is not a prime color but i dont see what color is A so i guess that its A:
Explanation: Primary colors include red, blue and yellow.
if you are saying that A: is white then Yes.
How does carbon not get lost when it moves through the carbon cycle
Answer:
Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy. Carbon moves from one storage reservoir to another through a variety of mechanisms. For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules. Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle. The ocean plays a critical role in carbon storage, as it holds about 50 times more carbon than the atmosphere. Two-way carbon exchange can occur quickly between the ocean’s surface waters and the atmosphere, but carbon may be stored for centuries at the deepest ocean depths. Rocks like limestone and fossil fuels like coal and oil are storage reservoirs that contain carbon from plants and animals that lived millions of years ago. When these organisms died, slow geologic processes trapped their carbon and transformed it into these natural resources. Processes such as erosion release this carbon back into the atmosphere very slowly, while volcanic activity can release it very quickly. Burning fossil fuels in cars or power plants is another way this carbon can be released into the atmospheric reservoir quickly.Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising; it is already considerably greater than at any time in the last 800,000 years. The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels. This extra carbon dioxide is lowering the ocean’s pH, through a process called ocean acidification. Ocean acidification interferes with the ability of marine organisms (including corals, Dungeness crabs, and snails) to build their shells and skeletons.
Which statement summarizes the law of segregation?
Gametes are passed in pairs, groups, or sets.
Traits that are dominant mask traits that are recessive.
Gametes carry one allele for each trait.
Traits are passed independently of one another.
Answer:
C) Gametes carry one allele for each trait.
Explanation:
The Law of segregation states that alleles separate during gamete formation, resulting in two gametes with a single allele each. The correct answer is C) Gametes carry one allele for each trait.
What states the segregation principle?The segregation principle states that there are alleles (dominant and recessive) coding for traits.
These alleles separate -segregate- during gamete formation, giving rise to two types of cells.
The segregation process is random, and each allele separates independently from the other alleles.
Each of the gametes carries only one allele coding for one trait.
The correct answer is C) Gametes carry one allele for each trait.
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What are the next four numbers in the pattern below ? 3,9,7,13,11,17,15,
Answer:
21,19,25,23
Explanation:
You are adding 6 to get the next number, than subtract 2 from the the number
Why is a diet of only carbohydrates insufficient for long term survival?
Explanation:
While we can survive without sugar, it would be difficult to eliminate carbohydrates entirely from your diet. Carbohydrates are the body's main source of energy. In their absence, your body will use protein and fat for energy. It may also be hard to get enough fibre, which is important for long-term health
We can survive without sugar, but eliminating carbs is challenging. The body runs on carbohydrates. Protein and fat will fuel you without them. Fibre, essential for long-term health, may be hard to find.
Why is carbohydrate important?A diet heavy in carbs should make up a significant portion of a healthy person's daily intake of food. Carbohydrates are essential to life because they supply the body with glucose, which may then be transformed into the energy needed to carry out bodily functions and engage in physical activity.
Although it is possible to live without sugar, it would be challenging to completely cut carbohydrates out of one's diet. The primary source of fuel for the body is comprised of carbohydrates. In their absence, your body will resort to utilizing protein and fat as its primary sources of fuel. It may also be difficult to consume sufficient amounts of fiber, which is essential for maintaining good health over the long run.
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Main idea or the topic of finding the epicenter of an earthquake.
Answer:
Main Concept Seismology is the study of earthquakes, their effects, and seismic waves.
Explanation:
The earthquake epicenter is a point on the Earth's surface directly above an earthquake. Scientists determine the epicenter by studying the P waves and S waves produced by all earthquakes. P waves are compression waves and travel faster through the Earth than S waves.
HELP ASAP PLEASE!! DUE IN 10 MINUTES !!! based on these results which statement correctly predicts what will happen to red blood cells when they are placed in a beaker containing a water solution in which the salt concentration is much higher than the salt concentration in the red blood cells
A:the red blood cells will absorb water and increase in size
B:the red blood cells will lose water and decrease in size
C:red blood cells will of first absorb water than lose water and maintain their normal size
D:the red blood cells will first lose water then absorb water and finally double in size
Answer:
The correct answer is - option B. the red blood cells will lose water and decrease in size.
Explanation:
The movement of the water takes place always from the high concentration region of solute to the low concentration of solute through a semi-permeable membrane. In this case, the representation is showing that placing the cell inside a solution with low concentration solute than the cell makes the cell increase the size, and placing it in a solution high concentration of solute makes it decrease in size due to the transfer of water from more water to the low water area.
Now placing the RBC in a solution with more salt concentration than the cell makes the solution hypertonic which means the solution has more solute concentration and less water so the water move from cell to the solution and cell will shrink and decrease in size.
Guard cells regulate which characteristic of life?
A
Every living organism is made of cells.
B
All living things are composed of DNA.
C
All living things grow.
D
All living organisms strive for balance through homeostasis.
Answer:
a
Explanation:
it helps celluar function
Do you think tress could reduce the negative effects of climate change? why or why not
Answer:
Hi there, Here is what I think
Trees can't reduce the negative effects of climate change because climate change throws off their functions (ex. Trees' leaves fall during the fall season but if its a lot warmer close to summer weather during fall season) it can mess up the way they function at a certain point in the seasons with that trees won't be able to function properly if the weather changes all of a sudden from scorching hot summer to a blizzard all of a sudden which can kill trees. Trees can hibernate in the Winter and bloom around Spring/Summer time but if you have wintery weather during summer it will kill them. So no trees can't reduce the negative effects of climate changes hence why people are scared over climate change because if the trees die we can die too without the oxygen trees and other plants provide for us.
Hope this helped :)
Feedback interactions in the human body are important
Answer: wdym uh they keep the internal body environment within its normal range.
Explanation:
A car tire company is testing a new tire that has proposed improved performance in wet conditions. An experiment was performed on a closed, half-mile track in wet conditions with the same car and driver. Two trials were performed with standard and new Wet Condition tires. What would the tire company MOST LIKELY infer based on this data?
Answer:
The hypothesis of the company is refuted.
Explanation:
Answer:
The hypothesis of the company is VERIFIED not REFUTED
Explanation:
Electrons that provide the energy for the production of most of a cell's ATP are carried to the electron transport cham by molecules.
Answer:
The answer was not found :(
Explanation:
Merry Christmas and Happy Holidays!
Answer: The electron transport chain takes place in the mitochondria. This stage converts the NADH into ATP. The electron transport chain works as a proton pump: it pumps hydrogen ions (protons) through the membrane, and only allows them back through a protein (ATP synthase) which makes ATP.
Hope this helps......... Stay safe and have a Merry Christmas!!!!!!!
I just want to say something... My account got deleted yesterday and i'm very upset because i had over 600 friends, 7,00 points, and 38 brainiest answer... I would love it if i got at least 15-20 friends by Christmas.
A lesion in the
is likely to affect thinking, planning, and overall personality,
as this brain region plays a significant role in cognition.
A) reticular activating syštem
B) prefrontal cortex
C) olfactory bulb
D) premotor cortex
What kind of tools did Neanderthals use in their daily lives?
Answer:
they made bone tipped wooden spears Nd hafted cutting or scraping tools and they made various things for adhesive.