Answer:
O As the air around the campfire is heated and becomes less dense, it rises and moves upward.
Explanation:
This is true because, the convection transfer needs the particle of elements to transport the heat from where it is in abundance to where it is in less abundance. Just like a water boiling becoming hot at the point closer to the fire than the top of the pot, so also will the air around campfire transfer heated air from the place closer to the campfire to upwards aware from the fire.
Convection is the flow of air around the campfire when it is heated and the decrease in density as it rises upward in the atmosphere. Thus, the correct option is C.
What is convection of heat?Convection is the transfer of heat from one place to the other due to the movement of fluids present in it. It is a distinct method of heat transfer in systems. The convective heat transfer involves combined processes of conduction and advection in a system and its surrounding. Convection is the dominant form of heat transfer in liquids and gases.
The thermal radiation in the fire is mostly in the form of infrared waves and visible light. However, the campfire heat transferred via convection shoots straight up in the sky and never reaches to the ground level.
Therefore, the correct option is C.
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Grapes growing on a vine are observed to shrink slightly during the day and increase in size at night. This is because:
a. developing fruits, such as grapes, transpire a lot of water to stay cool.
b. photosynthesis to produce sugar occurs in the light, but respiration and, therefore, the growth of new cells occurs mostly in the dark.
c. in leaves, phloem flow to growing sinks only occurs when the stomata are closed, because the transport capacity of the xylem is too small to supply water for both transpiration and phloem flow.
d. during the day, transpiration pulls on the water in the whole plant, causing the grapes to shrink slightly.
Answer:
b. photosynthesis to produce sugar occurs in the light, but respiration and, therefore, the growth of new cells occurs mostly in the dark.
Explanation:
Photosynthesis is the means by which green plants produce their foods by the use of sunlight, chlorophyll and carbon dioxide.
During the day, the grape make use of the process, photosynthesis, to get its sufficient food, thus the reason for the slight shrink. But at night, it respire well and new cells are produced. So that its size increase a bit.
Explain the significance of plant collections in the 18th century.
Explanation:
Humans developed the first planned plant hybrids early in the 18th century, during this period of intense interest in botany and plant anatomy. Collecting plants became a popular pastime for the wealthy and well educated
Which is an example of a polygenic trait?
Answer:
Polygenic traits are traits that are controlled by multiple genes instead of just one. The genes that control them may be located near each other or even on separate chromosomes. Some examples of polygenic traits are height, skin color, eye color, and hair color.
Answer:blood type in humans and birth weight calves
Explanation:
A cold front creates what kind of weather?
Answer:
A cold front creates nasty weather.
Explanation:
1. Rain
2. Thunderstorms
3. Gusty winds
4. Tornadoes
Question 25 of 25
Einstein's theory of general relativity was published in 1916. It became fully
accepted by scientists in the 1960s and is currently the best explanation of
gravity. Why did it take so long to become an accepted scientific theory?
A. The scientific community requires a certain amount of time before
a theory can be accepted.
B. Einstein's theory was difficult for many people to understand.
C. More evidence needed to be gathered to validate the ideas in the
theory
D. No scientific laws could be found to validate the theory.
SUBMIT
Answer:
B. Einstein's theory was difficult for many people to understand.
Explanation:
Einstein’s theory of general Relativity was largely Ignored for three decades because scientists at the time thought the theory was too complex compared to Newton's.
Therefore, it took long before the general science community accepted Einstein's theory of general relativity because Einstein's theory was difficult for many people to understand.
"B. Einstein's theory was difficult for many people to understand."
D. More evidence needed to be gathered to validate the ideas in the theory.
(nutrient Cycles)
1. described what "carbon-based life"
means:
2. what causes carbon to return to the atmosphere in a very short time?
3. if one or more nutrients are missing in soil what could happen to the plants?
4. in salt water, blank causes algal blooms whereas in freshwater blank algal blooms.
when muscles contract, the ____ energy of ATP is used to drive the ____ energy of contraction
Answer:
1. Chemical energy
2. Mechanical (kinetic) energy
Explanation:
The contraction of our muscles is accompanied by movement. Contraction of muscles involves the proteins myosin and actin, which forms a cross-bridge. Calcium ions bind to troponin protein allowing the myosin to bind to the binding sites on the actin protein.
However, for this cross-bridge cycle between myosin and actin to occur repeatedly, ATP is needed to induce the release of the myosin from the actin active site. Therefore, When muscles contract, the CHEMICAL energy of ATP is used to drive the MECHANICAL energy (kinetic energy) of contraction.
NOTE: ATP supplies chemical energy to induce movement of muscles during contraction. Energy due to motion is called KINETIC ENERGY.
When muscles contract, the Chemical energy of ATP is used to drive the Kinetic energy of contraction ; The missing answers are ; Chemical and Kinetic
When we contrast our muscles ATP induces the release of myosin from its actin active site ( i.e. the use of the chemical energy contained in ATP ). the release of myosin leads to the contraction of the muscles, which is a form of mechanical/kinetic energy. The proteins involved in the contraction ( kinetic energy ) of muscles are myosin and actin while the calcium ion involved is troponin.
Hence we can conclude that When muscles contract, the Chemical energy of ATP is used to drive the Kinetic energy of contraction.
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Which of these is a result of increased biodiversity in an ecosystem?
O A. Decreased ecosystem resilience
B. Increased ecosystem stability
C. Increased artificial selection
D. Decreased species richness
When you stop growing, your cells stop dividing.
True
False
Help please
Answer:
Absolutely not mitosis and meiosis don't stop until your heart stops beating.
It is false that When you stop growing, your cells stop dividing.
When you stop growing, it does not mean that all your cells stop dividing. In fact, cells in the human body continue to divide and replenish throughout life, albeit at different rates depending on the type of cell.
The human body is composed of various cell types that have different lifespans and rates of cell division. For example, cells in the skin, gastrointestinal lining, and blood undergo continuous division and turnover to replace old or damaged cells. These tissues are constantly renewing themselves.
However, some cells, such as neurons in the brain and muscle cells, have limited or no capacity for cell division after a certain stage of development. These cells primarily grow in size rather than dividing to create new cells. Therefore, not all cells in the body continue to divide once growth stops.
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Which of the followmg statements is true?
A. A technology Society has no impact on the environment
B. A technology society has a completely positive impact on the environment
C. A technology society has both a positive and a negative impact on the environment
D. A technology society has a completely negative impact on the environment
Answer:
C
Explanation:
What is the highest possible temperature?
Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
A.By increasing the age of the cows that are bred
B.By choosing cows that are high milk producers
C.By limiting the number of offspring per cow
D.By choosing cows that can produce milk after eating the most food
Answer:
I would say B.By choosing cows that are high milk producers
this is just my guess tho
So, the answer is B. Your welcome.
THIS IS NOT A QUESTION
Here is my unit 2 review guide if anyone needs it for biology!
Answer:
thanks homie
Explanation:
If all of your cells have the same DNA, how is it possible for one of
stem cells to become a skin cell and another of your stems cells to
become a bone cell?
Answer: daddy chill and yes they are
Explanation:
How do I find proof of God
Answer:
you can't.
Explanation:
You can observe evidence there may be a God, but there will always be a counter argument showing that God isn't real. Basically God and biology are ideas both of which may be seen as valid. in other words it depends on who you ask
Answer:
By praying.
Explanation:
environmental science aim to solve problems such as the extinction of a specific animal or plant species and deal with important issues such as
Answer:
Explanation:
_________ are organisms that consume other organisms.
A:Autotrophs
B:Heterotrophs
C: Producers
D: Plants
What are all the blood types
Answer:
– A, B, AB and O
Explanation:
What are graphs? Give an example of a graph that would be useful to you in your everyday life.
in one to three sentences describe what happens during the regeneration stage of the calvin cycle
Answer:
In stage 1, the enzyme RuBisCO incorporates carbon dioxide into an organic molecule, 3-PGA. In stage 2, the organic molecule is reduced using electrons supplied by NADPH. In stage 3, RuBP, the molecule that starts the cycle, is regenerated so that the cycle can continue.
Explanation:
Many schools have students make models of cells, but we ask that you make a model of something else and relate it to cells. Why do you think this may be? What have you learned so far from this project? Other than more time, is there any way you would like to improve the project?
Well we cannot make a model for you, its not like we can ship it to you Therefor, we can not answer the question's along with it. These questions come with personal experience from the model making. Have a good day//night ma'am/sir.
Answer:
Here is a model of a cell.
Explanation:
Hope it helped!
4) Cell C suddenly lost all its dynamin proteins. Which of the following will most likely happen
right
away as a result of this loss?
A) Transcription factor X will no longer be able to go to the nucleus
B) A vesicle bud will no longer be pinched off from a membrane
C) A vesicle will no longer be tethered to a target membrane
D) A protein will no longer be targeted to the mitochondrial matrix
E) Two of the above
Answer:
B) A vesicle bud will no longer be pinched off from a membrane
Explanation:
Dynamin is a protein responsible for endocytosis, the process where the cell takes substances in from outside the cell through a system of vesicles. At the edge of the cell, the membrane pinches in to form a vesicle, which buds off from the membrane and enters the cell.
The step of this process that dynamin is involved in is in cleaving newly formed vesicles from the membrane. Without it, a vesicle bud will no longer be pinched off from a membrane
What is the difference between active transport across a cell membrane and diffusion across a cell membrane?
The carbon atom I'm building has 6 electrons these electrons are found in levels the first level of the carbon has?
Dr. Ron believes that there is one overall intelligence that applies across all tasks and situations. Dr. Ron supports the notion of
O emotional
O general
O multiple
O specific
General intelligence, commonly referred to as the “g factor,” is a wide mental capacity that affects how well on cognitive ability tests a person does. Thus, option B is correct.
What is general intelligence?It is possible to describe general intelligence as a construct made up of various cognitive skills. These skills enable people to learn new things and resolve issues.
Underlying specialized mental talents in domains like verbal, spatial, numerical, mechanical, and mechanical abilities is this general mental capacity.
It is hypothesized that general intelligence influences how well people perform on all cognitive tasks.
You can relate general intellect to athletic ability. A person may be an exceptional runner, but this does not automatically make them a great figure skater.
Therefore, Dr. Ron supports the notion of general intelligence.
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How much water flows down the 1,450 mile long Colorado River
each hour?
Answer:
277 Miles
Explanation:
1, 450 Divided by X amount of time = 4 Miles every Hour
How many times does cytokinesis occur in Meiosis?
Answer:
Two Times
Explanation:
In meiosis, cytokinesis must occur twice: once after telophase I and again, after telophase II.
What are these ripples called
Answer:
called the surface waves
Based on what you have learned in this activity, will you share the link to that article on
brainpower? Why or why not? What should you tell your friend who originally shared the link
about the article? The next time that you run across a link on social media, what steps will
you take to evaluate it before clicking "share"?
I
Submit
Answer:
b
Explanation:
yes
10. What changes during a chemical reaction between two compounds?
A. number of atoms
B. chemical bonds
C. total mass
D. total energy
Answer:
I think it's chemical bonds I'm not of that helped
The changes occurs in chemical bond during a chemical reaction between two compounds. The correct option is B.
What is chemical bond?A chemical bond is a long-lasting point of attraction among atoms, ions, or molecules which then allows chemical compounds to form.
Ionic bonds are formed by the electrostatic force between oppositely charged ions, whereas covalent bonds are formed by the sharing of electrons.
A covalent bond is the strongest bond in chemistry. In such bonding, each atom shares electrons that bind them together.
The bonds that hold molecules together break apart and form new bonds during chemical reactions, rearranging atoms into different substances.
Each bond requires a different amount of energy to break or form; without this energy, the reaction cannot occur, and the reactants remain unchanged.
Thus, the correct option is B.
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