Answer:
Melanin
Explanation:
A demonstration helps students understand a principle of roller coaster design.
At which location does the marble have maximum kinetic energy?
Location W
Location X
Location Y
Location Z
Answer:
location Y
Explanation:
The KE of a pendulum bob is maximum where it moves fastest, at the lowest point; PE is maximum at the uppermost points. When the pendulum bob swings by the point that marks half its maximum height, it has half its maximum KE, and its PE is halfway between its minimum and maximum values.
Can you Mark a brainlest Please
The kinetic energy of a pendulum bob is maximum when it moves fastest, at the lowest point. Potential energy is maximum at the uppermost points. When the pendulum bob swings by the point that makes half it's maximum height, it was half it's maximum kinetic energy and it's potential energy is halfway between it's minimum and maximum values. Thus, option c is correct.
What is kinetic energy?Kinetic energy is a form of energy it possess when any object or person is in motion . It can be defined as the work needed to be done to produce a motion in a object from rest position.
If we want to acceleration in an object then we must apply a force on a object to give motion so we can say that we required to do work for acceleration and then we can say that required is equal to kinetic energy.
Mathematically,
Kinetic energy =1/2mv^2
Where
m = mass of object.
v = velocity of object
Kinetic energy is vector quantity it means that it have both i.e magnitude and vector.
S.I unit of Kinetic energy is Joule.
Therefore, Potential energy is maximum at the uppermost points. When the pendulum bob swings by the point that makes half it's maximum height, it was half it's maximum kinetic energy and it's potential energy is halfway between it's minimum and maximum values. Thus, option c is correct.
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Compare and contrast the Andes Mountains and the Rocky Mountains. How are they formed? What consumers and producers are in each?
Answer:
quora does help ;)
Explanation:
Both were formed from overthrusting. Overthrust mountains are formed when one tectonic plate crumples over on top of the old rock that lay in its path. The Rockies were formed when the N. American plate moved westward and the plate in its path was shoved on top of N. America.
The Andes are also overthrust mountains, but unlike the Rockies there are extinct, dormant and active volcanoes in the Andes. The tallest of these is Ojos del Salado, which peaks at over 22k feet asl. It lies in the southern volcanic belt of the Andes on the border of Chile and Argentina. There are 3 other volcanic belts in the Andes.
The Andes appear to be newer than the Rockies. They are more seismically active, they have active volcanoes in them and they are much higher, indicating that not enough time has elapsed to erode them very much.
How is carbon transferred within and between organisms and the environment? How is carbon recycled by an ecosystem? Also this is for a project so abt it anything will help :)
Answer: Carbon is transferred from plants to animals
a hydrothermal event is not a _____ event
Answer:
a hydrothermal event is not a vulcanic event
Explanation:
The star Betelgeuse is part of the constellation Orion. Betelgeuse is about 900 times larger than the Sun. However, from Earth, Betelgeuse appears as a red dot. Why does the Sun appear so much larger and brighter from Earth than Betelgeuse?
A.Because Betelgeuse is much hotter than the Sun
B.Because Betelgeuse is surrounded by other stars
. Because the Sun is much closer than Betelgeuse
D.Because the Sun is much older than Betelgeuse
Answer:A
Explanation:
Which is an example of as-xual reproduction by cloning?
A: an amoeba divides into two new cells
B: a sheep is born as an identical copy of its parent through a laboratory process.
C: a harebell plant sends stolons underground.
D: a severed starfish arm develops into a new starfish
Answer:
a
Explanation:
because amoeba cells multiply without any intercorse :)
(will give sna p and brainiest) Why does the Amazon River not create deltas?
The Amazon River contains too much wildlife that prevents deltas from forming.
The sand from the Amazon River falls to the bottom of the ocean instead of building up.
The ocean currents are too strong by the Amazon River to form deltas.
The Amazon River produces special types of sand that do not form deltas.
Answer:
"The ocean currents are too strong by the Amazon River to form deltas."
Explanation:
The ocean currents carry away sediment in the river before it can settle and form a delta.
can y'all help me I'll give brainliest to the person with the correct answer
Answer:
clouds of dust and gas!
Explanation:
Hope this helps! :)
Answer:
The solar system formed from clouds of dust and gas.
Explanation:
According to Amnh.org, The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula.
Why does a soaked seed germinate faster than the one kept in the fridge?
Answer:
well it needs water like us to stay alive
Answer:
the seed in the refrigerator becomes very cold so that's why it doesn't germinate
Which statement explains how wind weathers rocks?
A. t can dry rocks out.
B. It can cause rocks to heat up.
C. It can cause rocks to get cold.
D. It can carry bits of sand which erode the rocks.
Answer:
D. It can carry bits of sand which erode the rocks.
Explanation:
During which process do cells change chemical energy into something usable?
photosynthesis
DNA
ATP
respiration
Cellular respiration is the process of transforming chemical energy into forms usable by the cell or organism.
In respiration, cells change chemical energy into something usable. So, the correct option is D.
What is Cellular respiration?Cellular respiration is defined as the process by which organic fuels are oxidized in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy to drive the bulk production of ATP.
Cellular respiration is explained as the process of transforming chemical energy into forms usable by the cell or organism. Respiration is called a catabolic process, which breaks down large molecules into smaller ones, releasing energy to fuel cellular activities.
It is represented as:
Glucose + Oxygen → Water + Carbon dioxide+ Energy in the form of ATP
Thus, in respiration, cells change chemical energy into something usable. So, the correct option is D.
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A hydrothermal event is not a _____ event
Answer:
A hydrothermal event is not a vulcanic event
Explanation:
please help, really stuck
Answer:
I would say "size."
Explanation:
Correct me if I'm wrong!
Silvery-colored jewelry can be made from many different metals. A jeweler purchased a ring but unsure of the ring's composition. The jeweler measures the mass as 15 grams and the volume as 3.33 cm3. What is the silver-colored ring's composition?
A.Sterling silver
B.Platinum
C.White gold
D.Titanium
Answer:
I believe the answer is D. Titanium
Explanation:
15 ÷ 3.33 would be about 5, meaning about 5g/cm3. titanium is the only metal near 5
explain how the seabirds populations are likely to respond to a sharp increase in the European rabbit populations on the island
Answer: I got you
Explanation: On islands around the globe, invasive European rabbits wreak such havoc on plants and seabirds that governments worldwide have spent a century trying to eradicate the furry beasts. Scientist Scott Pearson had come to this steep uninhabited pile of rocks to catalog the decline of the rhinoceros auklet, a gray seabird that nests deep in hollowed-out hillside burrows. But instead of spying one of the white-eyebrowed creatures, Hodum came eye to eye with the most likely cause of its decline. Rabbits inside the borrow.
PLEASE HELP WILL MARK BRAINLIEST | Describe how the respiratory system exchanges carbon dioxide and oxygen in the lungs. Include the words carbon dioxide, lungs, trachea and bronchi in your answer.
Answer:
Inside the lungs, oxygen is exchanged for carbon dioxide waste through the process called external respiration. This respiratory process takes place through hundreds of millions of microscopic sacs called alveoli. Oxygen from inhaled air diffuses from the alveoli into pulmonary capillaries surrounding them.
Explanation:
Answer:
Inside the lungs, oxygen is exchanged for carbon dioxide waste through the process called external respiration. This respiratory process takes place through hundreds of millions of microscopic sacs called alveoli. Oxygen from inhaled air diffuses from the alveoli into pulmonary capillaries surrounding them.
The graph shows the distance an object traveled 11 seconds.
Which answer choice best describes the movement of the object between the times of 7 and 10 seconds?
A.Moving at a constant speed.
B.Accelerating
C.Moving toward the north
D.Stopped
What clues indicate that a chemical reaction has occurred?
Choose all correct answers.
the formation of a new liquid
a temperature change
the formation of bubbles
a color change
Which word fits better that the word below.
"Considered"
A. Voluntary
B. Reflex
can yall please help me out with this i really need help
If you were about to run into a brick wall, would hitting your brackets help lessen the force of the collision? Even if you knew they couldn’t completely stop you? Why or why not?
The arrow is pointing at a digestive organ. What happens when food reaches this organ?
A. Digestive juices mix with the food.
B. Food is stored, but no digestion occurs.
C. The food is moved into the small intestine.
D. The food is completely digested and absorbed into the bloodstream.
I think it's A because the stomach, the organ the arrow is pointing at, has the digestive juices.
please can someone answer this question
Answer:
C
Explanation:
You need to start with the simplest form and go to the most complex,
Small clump of cells -> having structure -> Basic feathers -> Yassificated feathers
I'll make you BRAINLIEST
A classmate states that animals that result from artificial selections are lucky since they have better traits than bred animals. giving your study of this topic, do you agree? Explain.
Answer:
the classmate is correct
Explanation:
they are luckier than most. for example
take a brown beetle in a green forest
and there will be some few green beetles, which is the artificial selection
those green beetles will survive better than the brown ones and this they have better traits. and the green beeetles will make up most of the population of beetle after a while. this is becuase the brown beetles need to evolve over time to the environment which will take a long time.
Who selected the individuals that would reproduce to pass along their traits?
Answer:
Gregor Mendel
Explanation:
He was the first to describe how characteristics are passed down from generation to generation.
1) How does air pressure affect breathing?
2) How do alveoli help gas exchange in the lungs?
3) Explain the job of the diaphragm muscle.
4) What two body functions do lungs support?
Answer:
1) The air pressure in your lungs has to be less than the air outside your lungs, to get your lungs to inflate.
2) Alveolar sacs are surrounded by thin capillaries where gas can be it's changed
3) The diaphragm, located below the lungs, is the major muscle of respiration. ... Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs
4) I don't quite understand what you mean by that but I'll give it my best shot. The lungs' main role is to bring in air from the atmosphere and pass oxygen into the bloodstream. From there, it circulates to the rest of the body. The organs require help from surrounding structures in the body in order to breathe properly. The main function of the lungs is the process of gas exchange called respiration (or breathing). In respiration, oxygen from incoming air enters the blood, and carbon dioxide, a waste gas from the metabolism, leaves the blood. A reduced lung function means that the ability of lungs to exchange gases is reduced Adaptations of the alveoli: Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through. Extensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
I don't know if my 4th answer somehow gave you the answer you needed but I tried my best
Why are phytoplankton so important to the cycling of oxygen?
Phytoplankton absorb more oxygen than they release.
Phytoplankton store oxygen in their bodies.
Phytoplankton are key to keeping oxygen and carbon dioxide levels balanced.
Phytoplankton convert oxygen into carbon dioxide.
Answer:
Phytoplankton are key to keeping oxygen and carbon dioxide levels balanced.
Explanation:
Modern organisms have some similarities to organisms that are now extinct. What is one possible explanation for this?
Answer:
Darwin's theory its simple thus that do not evolve shall dissolve meaning if an organism cannot keep up with the environment around it it will die off and if it can it will evolve.
Explanation:being that there are many species of cat that prolly come from one organism they all evolved according to there needs
The idea of evolution is one explanation for the similarities between living things and extinct ones, such as the Smilodon saber-toothed tiger and contemporary cats. Through the processes of natural selection, genetic drift, and gene flow, populations of species undergo evolution over time.
What is an Evolution?Natural selection, genetic drift, and gene flow are three processes that allow populations of organisms to change over time. This process is known as evolution.
When populations of organisms diversify and some individuals have traits that are more beneficial to their environment than others, evolution occurs. This causes the evolution of new species over time that are more adapted to their surroundings.
For example, the evolution of modern cats from the Smilodon saber-toothed tiger probably occurred over a long period of time through a succession of small changes in the cat population. Eventually, the evolution of the contemporary cat was influenced by cats that had somewhat sharper teeth or a greater hunting ability because they were more successful at catching prey and passing on their genes.
Therefore, the idea of evolution is one explanation for the similarities between living things and extinct ones, such as the Smilodon saber-toothed tiger and contemporary cats.
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Since customers prefer a lower concentration of lemon juice, Mario measures out 3 grams (g) of lemon juice and adds it to the 500 milliliters (mL) of water. What is the concentration of lemon juice in the water?
Answer:
mario isnt getting this right because luigi isnt there
Explanation:
they are brother and mario is sad
A classmate states that animals that result from artificial selections are lucky since they have better traits than bred animals. giving your study of this topic, do you agree? Explain.
Answer:
See answer below. Hope it helps.
Explanation:
This can have advantages and disadvantages. The artificially selected animals could have better traits than naturally selected animals, but in the long run, it will be harder for them to evolve and adapt to new environments because of the lack of variation in their traits.
Artificial selection has long been used in agriculture to produce animals and crops with desirable traits. The meats sold today are the result of the selective breeding of chickens, cattle, sheep, and pigs. Many fruits and vegetables have been improved or even created through artificial selection.
What is an example of natural selection What is an example of artificial selection?Natural selection includes the selection of long-necked giraffes and the changes in the size and shape of the beaks of birds according to their feeding habits. Some examples of artificial selection include dog breeding to produce new breeds of dogs and cross-breeding in cash crops like wheat and rice.
How is the artificial selection done?Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
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