Explanation:
Answer:
For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/weathering/
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.
Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering. Rocks, such as lavas, that are quickly buried beneath other rocks are less vulnerable to weathering and erosion than rocks that are exposed to agents such as wind and water.
For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain.
Which describes a seed that is most likely dispersed by water? A.) covered with hooks B.) attached to the cell C.) hollow inside D.) brightly colored
Answer:
C.hollow inside
Explanation:
Water dispersed seeds are hollow. The air cavity inside is large to counteract the seed weight and keep floating as long as it isn't pierced.
Week 1: Bones, Muscles, and Joints
You are at a sports complex that has several events going on to include soccer, lacrosse, basketball and football. As you walk
around and stop at the different games you spot different incidents occur that require the player t leave the field. These
include a player holding there arm/shoulder, one unable to put weight on their foot/leg, one holding the area around the
buttucks/upper thigh, one is holding the side of his head, and one is holding there stomach/side. Knowing what you know now
about the bones, muscles and joints discuss in detail, what bones, muscles or joints are in these areas and what type of
diagnostic technique could be used?
Answer:
HI :)
Explanation:
What Are Bones and What Do They Do?
Bones provide support for our bodies and help form our shape. Although they're very light, bones are strong enough to support our entire weight.
Bones also protect the organs in our bodies. The skull protects the brain and forms the shape of the face. The spinal cord, a pathway for messages between the brain and the body, is protected by the backbone, or spinal column. The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs.
Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body. The amounts of certain vitamins and minerals that you eat, especially vitamin D and calcium, directly affect how much calcium is stored in the bones.
Bones are made up of two types of bone tissues:
Compact bone is the solid, hard outside part of the bone. It looks like ivory and is extremely strong. Holes and channels run through it, carrying blood vessels and nerves.
Cancellous (pronounced: KAN-suh-lus) bone, which looks like a sponge, is inside compact bone. It is made up of a mesh-like network of tiny pieces of bone called trabeculae (pronounced: truh-BEH-kyoo-lee). This is where bone marrow is found.
In this soft bone is where most of the body's blood cells are made. The bone marrow contains stem cells, which produce the body's red blood cells and platelets, and some types of white blood cells. Red blood cells carry oxygen to the body's tissues, and platelets help with blood clotting when someone has a cut or wound. White blood cells help the body fight infection.
Bones are fastened to other bones by long, fibrous straps called ligaments (pronounced: LIG-uh-mentz). Cartilage (pronounced: KAR-tul-ij), a flexible, rubbery substance in our joints, supports bones and protects them where they rub against each other.
How Do Bones Grow?
The bones of kids and young teens are smaller than those of adults and contain "growing zones" called growth plates. These plates consist of multiplying cartilage cells that grow in length, and then change into hard, mineralized bone. These growth plates are easy to spot on an X-ray. Because girls mature at an earlier age than boys, their growth plates change into hard bone at an earlier age.
Bone-building continues throughout life, as a body constantly renews and reshapes the bones' living tissue. Bone contains three types of cells:
osteoblasts (pronounced: AHS-tee-uh-blastz), which make new bone and help repair damage
osteocytes (pronounced: AHS-tee-o-sites), mature bone cells which help continue new born formation
osteoclasts (pronounced: AHS-tee-o-klasts), which break down bone and help to sculpt and shape it
What Are Muscles and What Do They Do?
Muscles pull on the joints, allowing us to move. They also help the body do such things as chewing food and then moving it through the digestive system.
Even when we sit perfectly still, muscles throughout the body are constantly moving. Muscles help the heart beat, the chest rise and fall during breathing, and blood vessels regulate the pressure and flow of blood. When we smile and talk, muscles help us communicate, and when we exercise, they help us stay physically fit and healthy.
Humans have three different kinds of muscle:
Skeletal muscle is attached by cord-like tendons to bone, such as in the legs, arms, and face. Skeletal muscles are called striated (pronounced: STRY-ay-ted) because they are made up of fibers that have horizontal stripes when viewed under a microscope. These muscles help hold the skeleton together, give the body shape, and help it with everyday movements (known as voluntary muscles because you can control their movement). They can contract (shorten or tighten) quickly and powerfully, but they tire easily.
Smooth, or involuntary, muscle is also made of fibers, but this type of muscle looks smooth, not striated. We can't consciously control our smooth muscles; rather, they're controlled by the nervous system automatically (which is why they're also called involuntary). Examples of smooth muscles are the walls of the stomach and intestines, which help break up food and move it through the digestive system. Smooth muscle is also found in the walls of blood vessels, where it squeezes the stream of blood flowing through the vessels to help maintain blood pressure. Smooth muscles take longer to contract than skeletal muscles do, but they can stay contracted for a long time because they don't tire easily.
Cardiac muscle is found in the heart. The walls of the heart's chambers are composed almost entirely of muscle fibers. Cardiac muscle is also an involuntary type of muscle. Its rhythmic, powerful contractions force blood out of the heart as it beats.
How is biotechnology useful for society?
Answer:
Like all technologies, biotechnology offers the potential of enormous benefit but also potential risks.
Biotechnology could help address many global problems, such as climate change, an aging society, food security, energy security and infectious diseases, to name just a few.
HOPE IT HELPS!!
What does a molecule have?
Explanation: a molecule has 2 or more atoms bonded chemically by various methods like ion and covalency
How many liters of water does the European Food Safety recommend daily
Answer:
2.5 L/day
Explanation:
2.5 L for men and 2.0 L for women
what organelles are found in mouse skin?
The epidermis of alpha-MSH-treated 3-day-old mice and normal 6-day-old mice contained melanocytes with numerous fully melanized melanosomes, and with no or only a few melanoblasts. Changes in other organelles in differentiating melanocytes were also noticeable..
Mice's epidermis had melanocytes with a large number of fully melanized melanosomes but few or no melanoblasts.
What are melanosomes?Melanosomes are tissue-specific organelles that are related to lysosomes and are found in pigment cells. Melanins are generated and stored in melanosomes.
Melanins are complex pigments that give mammals their color as well as photoprotection against ionizing radiation. Melanins are found in the skin, hair, and eyes of mammals. In addition to this, they play a role in the development of the optic nerve system and govern the functions of the retina.
Within the melanocyte or the growing retinal pigment epithelial cell, melanosomes progress through four morphologically distinct phases during the maturation process.
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Which definition best matches the term globalization?
A. The belief that all national groups have the right to control their
own countries
B. The growing connection among economies and societies around
the world
O C. The establishment of powerful empires that control weaker
colonies
D. The increasing acceptance of civil and human rights for citizens of
all countries
Answer:
B
Explanation:
that is the answer to the question
Which condition is required for viruses to reproduce?
Answer:
A host is required so that the virus is able to reproduce.
Explanation:
Unlike bacteria, viruses cannot survive without a host. They primarily survive while attaching itself onto a host's cell. So therefore, in order for meiosis to occur within a virus, it needs a host first. In addition, viruses don't need another virus because viruses are prokaryotic cells.
A female has a brother who is color blind and a mother who is not.
What is the probability that the female is a carrier for the trait?
25%
100%
50%
0%
25% is the probability that the female is a carrier for the trait. So, the correct option is (A).
What is Colourblindness?Color blindness is defined as a reduced ability to differentiate between colors compared to the norm of normal human color vision. It is also called color vision deficiency (CVD) when a person is color blind, usually having difficulty distinguishing between certain colors such as yellow and orange, green and brown, pink and grey, or blue and green. Purple. These are typical of what is called "red-green color blindness".
The genes that can give red-green color blindness are passed on the X chromosome, although it is passed on the X chromosome, red-green color blindness is more common in males, causing males to inherit it from their mothers. There is only 1 X chromosome.
In the above case, if the mother is not colour blind but her son is color blind so, the probability for her daughter is 25%.
Thus, 25% is the probability that the female is a carrier for the trait. So, the correct option is (A).
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Why do you blink
This is what it looks like when you blink with your eyes and mouth
LOL
Ans我们每一个人都在不断地眨眼，正常人每分钟要眨眼10～20次，每次眨眼的时间约0.2～0.4秒
除去睡眠时间，一个人一天要眨眼1万次左右，人体中最忙碌的算是提睑肌了
每次眨眼间隔时间仅4～5秒钟wer:
lanation:
During protein synthesis at the ribosome, the ______ pairs with:
A) nucleotide/nucleoside
B) codon/anticodon
C) codon/amino acid
D) mRNA/DNA
the result is line B) codon/anticodon
If disaccharides undergo dehydration, a polysaccharide will be made.
True
False
Answer:
False
Explanation:
polysaccharide are formed when dehydration reaction occurs between a large number of monosaccharides. amylose is a polysaccharide compose of between 60 and 300 glucose
In the context of a scientific experiment, what is a control group?
A) a group that is treated differently from others except for the variable being tested.
B)a group that is treated the same as other groups except for the variable being tested.
C)a group assembled only under environmentally controlled conditions.
D)a group treated the same as others except that it has fewer subjects.
Answer:
B. A group that is treated the same as other groups except for the variable being tested.
In the context of a scientific experiment, a control group is a group that is treated the same as other groups except for the variable being tested.
what is scientific experiment ?The scientific experiment can be defined the test the hypothesis from observation and it is the foundation of the scientific method.
There are different steps involve in scientific method and the steps are Making observations, form the hypothesis, design and conduct experiment, evaluation of results, both accept or reject the hypothesis.
variable is the factor which will be compulsorily added to an experimental set up such as dependent, independent and controlled variables.
An independent variable is the parameter which can not influenced by other factor while it can change other factor where as A dependent variable depend on other variable and it can be changed by the influence of independent variable.
Control variable which remain constant can not be changed, but it is important as it prevent bias from the result of experiment.
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explain the disadvantage in terms of energy loss when humans eat beef rather than legumes
Answer:
Katha Ko Bajja Muchi Ko Chora
The main disadvantage in terms of energy loss when humans eat beef rather than legumes is the inefficiency of energy transfer.
When humans consume beef, they are consuming meat from animals that have themselves consumed plant-based foods. However, energy is lost at each step of the food chain. Plants capture energy from the sun through photosynthesis and convert it into organic compounds.
When animals consume plants, only a fraction of that energy is transferred to the animal's tissues, as some is used for metabolic processes, movement, and other functions.
Therefore, when humans consume beef, they are indirectly obtaining energy from plants but at a much lower efficiency. If humans were to consume plant-based foods directly, such as legumes, they would bypass the energy loss that occurs in the conversion of plant energy to animal energy. Legumes are protein-rich plant sources that can provide comparable amounts of nutrients and energy without the same level of energy loss.
By opting for legumes instead of beef, humans can have a more efficient and sustainable use of energy resources, reducing the environmental impact associated with livestock production and utilizing plant-based sources more directly.
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Where did abiogenesis take place
Answer: Hi, There! Your Answer is Below :)
as deep below Earth's surface
Explanation:
More Information below!
abiogenesis is the theory that life came from non living matter. Cell theory says that life comes from life or more correctly cells come from other cells. abiogenesis says that cell theory is wrong and that at some time in the distance past cells came into being by accidental random natural causes.
____________________________________________________________
~DarkSpirit~
what is the primary job of golgi tendon organ? is it sense of pain or protect against injury
Answer:
When people lift weights, the golgi tendon organ is the sense organ that tells how much tension the muscle is exerting. If there is too much muscle tension the golgi tendon organ will inhibit the muscle from creating any force (via a reflex arc), thus protecting the you from injuring itself.
Answer: protect against injury
The Golgi tendon organ is a proprioceptive sensory receptor organ that senses changes in muscle tension. If there is too much muscle tension the organ will inhibit the muscle from creating any force, thus protecting itself from injuring.
3. Which of the following options below correctly labels each organic compound structure?
1
2
3
3
H
Н Н Н Н Н Н Н
11
HU-
-
am
H
NO
WOCH
RA
On
HANN
-----------
NH
*NH
CH
NH
CH
ΝΗ
HHHHHH
11
------
0 н н н н н н н Н
a. 1- carbohydrate; 2 - protein; 3-lipid
b. 1-protein; 2-lipid; 3-carbohydrate
C. 1-lipid; 2 - carbohydrate; 3 - protein
d. 1-lipid; 2 - protein; 3-carbohydrate
Answer:
Съжалявам, но не съм сигурен какъв е отговорът
Explanation:
t Благодаря ти въглехидрати; 2 - протеини; 3-липид
б. 1-протеин; 2-липиди; 3-въглехидрати
В. 1-липиди; 2 - въглехидрати; 3 - протеин
д. 1-липиди; 2 - протеини; 3-въглехидрати
0 н н н н н н н Н
a. 1- carbohydrate; 2 - protein; 3-lipid
b. 1-protein; 2-lipid; 3-carbohydrate
C. 1-lipid; 2 - carbohydrate; 3 - protein
d. 1-lipid; 2 - protein; 3-carbohydrate
Decomposers chemically breakdown
dead plant and animal materials. What
are the two major groups of
decomposers?
A. snails and fungi
B. crabs and lobsters
C. fungi and bacteria
Answer:
C. Fungi and Bacteria
Explanation:
because I am smart
How are pure carbon, oxygen,and hydrogen different from the compound ethanol which contains all three of those element?
Answer:
this is ur answer that I have already applied.
What is the speed of a wave that has a frequency of 110 Hz and a wavelength
of 0.21 m?
Answer:
110 × 21 =2310 cm
Explanation:
speed is 2310 cm
Why is it important to study cells? Check all that
apply.
They are the basis of all living things.
Knowledge of the functioning of cells can
lead to treatments for human diseases.
Cells prevent infection.
DONE
Answer:
1 and 2
Explanation:
edge 2021 ;P
When you apply brakes on a bicycle the bicylces kinetic energy, the bicycles
Hi :)
The bicycle slows down.
The pizza that you ate for lunch is being digested. Summarize what happens to it in your stomach.
Answer:
This is the one.. that i did when i was schooling.. I still hv it thank fully..
Hope it help..!!
Explanation:
The correct answer about the digestion in the stomach of the pizza one eats is - The pizza is churned, mixing with digestive enzymes and gastric acid.
Digestion of the food takes place in the alimentary canal or digestive system. In this organ system different organs are used to digest different food molecules and absorbs them.
Let assume you ate a pizza slice in which it moves through the alimentary canal. it begins from the mouth and ends at colon through the esophagus, stomach, small intestine, large intestine.
Mouth: here pizza is chewed with our teeth, broken down and mixed with our saliva. Saliva also has an enzyme, called amylase, to help break down carbohydrates. This called bolus that moves to the esophagus to stomach.Stomach: a pouch shape organ where the pizza mixes it with gastric juice and digestive enzymes to digest protein by pepsin. The food or pizza now called the Chyme that moves to small intestine.Small intestine: receiving the pizza in the small intestine, pancreatic juices and bile from the gallbladder mixed with it and digest the pizza.The nutrients from the chyme (the pizza) absorbed in the small intestine.Thus, the correct answer is - The pizza is churned, mixing with digestive enzymes and gastric acid.
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Which blood vessels would constrict quickly if you walked outside into a cold windy winter day without putting on extra layers of clothing?
a. blood vessels to the skin
b. blood vessels to the intestines
c. blood vessels to the lungs
d. blood vessels to the heart
e. blood vessels to the brain
Explanation:
blood vessels to the skin
what are the similarities between sunset and sunrise
Answer:
no similarities are there
Answer:
ummmm they both have the word sun?
Explanation:
both related to the sun?
If you see a plant with a 4-petal flower and branched leaves, you can deduce that this plant is a type of:__________
A) angiosperm dicot
B) angiosperm monocot
C) gymnosperm dicot
D) gymnosperm monocot
unique propertys of water how is this property explained by the structure of water molecules and the bonds between them
Answer:
Water is v-shaped
making an angle of 105°
Explanation:
water has low boiling and melting point
usually below 300°c
The DNA sequence AGGCTTCGCGAAGGTAAC would code for the sequence of 6 amino acids.
True
False
Answer:
True
Explanation:
Amino acids are coded from the DNA sequence in groups of three bases, that is, three bases (three letter codes) also called codon codes for (or specifies) an Amino acid.
in the above DNA sequence each of the prospective 6 Amino acids will each require a triplet of bases. Thus, the simple calculation of 6×3 yields 18. Thus we need at least 18 bases in our DNA sequence, barring stop codon, to code for Amino acids.
Counting, the above DNA sequence contains 18 bases exactly.
how can you tell from diagram that sucrase is not used up during the chemical reaction?
Answer:
The arrows in the diagram above show that this reaction is a cycle. Therefore, sucrase is reused in the next chemical reaction. In addition, there is no changes to the way sucrase is depicted in the diagram.
The arrows in the above diagram indicate that this reaction is a cycle. As a result, sucrase is reused in the following chemical reaction. Furthermore, no changes have been made to the way sucrase is depicted in the diagram.
What is enzyme?Enzymes are biological catalysts that are almost always proteins. It accelerates a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is reused.
Enzymes are classified into six functional classes based on the type of reaction they are used to catalyze. Hydrolases, oxidoreductases, lyases, transferases, ligases, and isomerases are the six types of enzymes.
Sucrase accelerates hydrolysis by breaking the bonds between sucrose and releasing fructose and glucose subunits.
The arrows in the diagram above indicate that this is a cycle reaction. As a result, sucrase is recycled in the subsequent chemical reaction. Moreover, no modifications to the way sucrase is depicted have been made.
Thus, this way sucrase is not used up during the chemical reaction.
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what is chromatography and what are types of chromatography
Chromatography is a process for separating components of a mixture. ... The different components of the mixture travel through the stationary phase at different speeds, causing them to separate from one another.
There are four main types of chromatography. These are Liquid Chromatography, Gas Chromatography, Thin-Layer Chromatography and Paper Chromatography.
Liquid Chromatography is used in the world to test water samples to look for pollution in lakes and rivers.
Answer:
Chromatography is a method used by scientists for separating organic and inorganic compounds so that they can be analyzed and studied.
Types of chromatography are:
-Column chromatography
-Ion-exchange chromatography
-Gel permeation (molecular sieve) chromatography
-Paper chromatography
-Thin-layer chromatography
-Gas chromatography
-Dye-ligand chromatography
-Hydrophobic interaction chromatography
-Pseudo affinity chromatography
-High press chromatography (HPLC)
Explanation: