Answer:
Explanation:
"Life on earth probably began in the depths of the ocean" i qouted it from Royal Society of Chemistry journal Chemical Society Reviews
What is pushing apart North America and Eurasia?
Answer:
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
Sara is watching television when the power goes out. When she walks to the kitchen to get a candle, she knocks over a chair. She lights a match and holds it to the wick of the candle. She uses the light from the candle to find her way to the chair, which she picks up and sits in. Which of the events was a chemical change? *
Answer:
She lights a match and holds it to the wick of the candle.
Explanation:
Chemical change produces the required products of reactants by an irreversible reaction. For there to be a chemical change, a chemical reaction between reactants must occur.
Lighting of a match is a chemical change in which the friction between the match box and the gun powder on the stick produces a flame. This reaction produces a product by an irreversible process. After the flame burns out the wick of the candle, it can not be reversed.
PLEASE HELPP A cells chromosome contains: A. Genes B. chlorophyll C. sperm D. Eggs
Answer:
A
Explanation:
genes
Why does a pH of 5 produce high ATP synthase activity, but a pH of 3 and 9 very low ATP synthase activity?
Answer:
ATP synthase works best at a pH of 5, but changes in the pH of the medium can alter its enzymatic activity, decreasing it.
Explanation:
Enzymes are specialized proteins that contribute to biochemical reactions occurring faster, decreasing the activation energy.
Under ideal conditions of temperature and pH, enzymes can work at their maximum capacity, but changes in these conditions can affect the speed with which an enzyme acts.
ATP synthase, an important enzyme for ATP synthesis and oxidative phosphorylation, works best at a pH of 5 (weak acid), but as the acidity or alkalinity of the medium increases, enzymatic activity decreases.
diffusion is the movement of molecules from....
an area of high concentration to an area of low concentration
an area of low concentration to an area of high concentration
an area of equilibrium to an area of high concentration
Answer:
an area of high concentration to an area of low concentratioN
Greenhouse gases absorb solar radiation and rerelease it in the Earth's atmosphere. Based on this information, which of the
following sources within the agricultural sector has the most impact on global temperatures on Earth?
A. digestive processes of animals
B. agricultural soil management
C. fossil fuel consumption
D
manure management
Answer:c
Explanation:because it takes away carbon and greenhouse gases from long term carbon stores an releases it into the atmosphere at a short term rate through combustion
Need help pls if you can
Answer:
60
Explanation:
which can reduce the amount of organic material discarded in landfills?
A. biomass energy
B. solar energy
C. water energy
D. wind energy
When population growth increases in an area, what is happening to the birth rate and age structure of that population?
a. increasing birth rate with a greater number of young organisms
b. increasing birth rate with a smaller number of old organisms
C. increasing birth rate with a smaller number of young organisms
d. increasing birth rate with a greater number of old organisms
Please select the best answer from the choices provided
A
OC
D
Save and Exit
Submit
Mark this and retun
Answer:
a
Explanation:
the increase in birth rate means more young organisms are born => greater number of young organisms
match each theory to its best description.
gravitational instability theory,
core accretion theory,
gas and dust sticks to itself and collapses,
a core of rock and ice attracts gases
The match of the theory, its best description, is the following:
Gravitational instability theory – gas and dust stick to themselves and collapse.Core accretion theory- a core of rock and ice attracts gases.What is gravitational instability theory?Gravitational instability theory was postulated around a half-century ago. The theory states that if gas and dust collapse around the star, and it forms a disc shape, it will grow until it becomes a planet.
Core acceleration theory also explains the formation of the planet. It is a two-stage process.
Thus, the match is the following:
Gravitational instability theory – gas and dust stick to themselves and collapse.Core accretion theory- a core of rock and ice attracts gases.Learn more about gravitational instability theory, here:
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Is a phytoplankton a producer?
Answer:
Yes
Explanation:
People in a rural community share a forest. By agreement, each family can cut 10 trees per year for
personal use. One year, one person cuts 20 trees to build a shop that's nicer than the neighbor's shop. The
new shop flourishes, and despite the general disapproval, nothing is done to punish the cheater. The
neighbor, seeing this, decides that it's okay to go ahead and take 25 trees. Other neighbors follow suit. After
a few years, the forest plot is gone, and everybody must travel much farther for wood. What's this an
example of?
O A Natural Law of the Land
OB. Tragedy of the Commons
OC. Voluntary approach to environmental policy
O D. Conservation Property RightS
Answer: B : Tragedy of the commons
Explanation:
Since the forest plot has been depleted (gone) and everybody must travel much farther for wood, this is an example of: B. Tragedy of the Commons.
What is Tragedy of the Commons?Tragedy of the Commons can be defined as an economic situation in which individuals with access to a shared (common pool) resource act in their own selfish interest while retroactively depleting this resource.
This ultimately implies that, it is an economic problem of overconsumption by individuals sharing a common resource and it eventually leads to the depletion of the resource.
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i need an answer for this ASAP!!
Answer:
the answer is the second one
How has evolution shaped human memory? 20pts
The region inside the cell except for the nucleus
Answer:
cytoplasm
Explanation:
the cytoplasm is all of the material within a cell, enclosed by the cell membrane, except for the cell nucleus. The material inside the nucleus and contained within the nuclear membrane is termed the nucleoplasm.
The region inside the cell except for the nucleus is cytoplasm. Except for the cell nucleus, the whole contents of a cell that are protected by the cell membrane are known as the cytoplasm.
What is cytoplasm?The cytoplasm is a region in eukaryotic cells that is situated between the nuclear membrane and the plasma membrane.
Typically, the cytoplasm is split into two halves. Ectoplasm, the outermost area, is more viscous and is referred to as such. The endoplasm, which is found in the innermost part, is more fluid.
Except for the cell nucleus, the whole contents of a cell that are protected by the cell membrane are known as the cytoplasm. Nucleoplasm is the name for the substance that makes up the nucleus and is enclosed within the nuclear membrane.
Therefore, the area except for the nucleus in the cell is the cytoplasm, which is filled inside the cell.
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Heterozygous is another word for what?
Answer:
Heterojunction or having two identical alleles of the same gene.
Explanation:
A heterojunction is an interface that occurs between two layers or regions of dissimilar semiconductors. These semiconducting materials have unequal band gaps as opposed to a homojunction. It is often advantageous to engineer the electronic energy bands in many solid-state device applications, including semiconductor lasers, solar cells and transistors. The combination of multiple heterojunctions together in a device is called a heterostructure, although the two terms are commonly used interchangeably. The requirement that each material be a semiconductor with unequal band gaps is somewhat loose, especially on small length scales, where electronic properties depend on spatial properties. A more modern definition of heterojunction is the interface between any two solid-state materials, including crystalline and amorphous structures of metallic, insulating, fast ion conductor and semiconducting materials.
what is the cat breed in the picture???
correct answer will get brainliest
Answer:
american shorthair
Explanation:
explain one way that HYDROGEN GAS is commercially produced
Explanation:
There are a number of ways to produce hydrogen: Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. The carbon monoxide is reacted with water to produce additional hydrogen.
As of 2020, the majority of hydrogen (∼95%) is produced from fossil fuels by steam reforming of natural gas, partial oxidation of methane, and coal gasification. Other methods of hydrogen production include biomass gasification and electrolysis of water.
Helppp answer as soon as possible thank you❤️❤️
Answer:
b......one.........
Answer:
b i sur answer
my upper one is right
The first filial (F1) generation is the result of?
Answer:
F1 is the result of two cross-pollinated parent plants.
Explanation:
So basically, when you cross two true breeding parent plants, then the offspring is known as the F1 generation i believe.
Why are elliptical galaxies important??
Answer:
Elliptical galaxies are the most abundant type of galaxies found in the universe but because of their age and dim qualities, they're frequently outshone by younger, brighter collections of stars. Elliptical galaxies lack the swirling arms of their more well-known siblings, spiral galaxies.
Explanation:
Answer:
Astronomers have identified and named more of the spiral galaxies because their swirling arms and brightness make them easier to spot. Elliptical galaxies are older and give off less light than other galaxies. They also have less dust and gas in them, so they don't form many new stars.
Explanation:
pls help I am on a timer...
Answer:
C
Explanation:
What happens when you add additional lightbulbs (a type of resistor) to a series
circuit? Check all of the things that happen.
-The light bulbs will get more dim with each bulb that is added.
-The resistance in the
circuit increases with each item that is added.
- The lightbulbs will get brighter with each bulb that is added.
-The circuit will not light
Answer:
the light bulbs will get more dim with each bulb that is added
Explanation:
i dont know how to explain it, but im sure it's right.... i hope ....
When you add additional lightbulbs (a type of resistor) to a series circuit then the light bulbs will get more dim with each bulb that is added. Hence option A is correct.
What is circuit?Circuit is defined as a device constructed from various smaller electrical components that can direct electricity via itself to power bigger devices. Electricity can flow continuously in a closed circuit from the power source, to the conductor or wire, to the load, and then back to the ground or power source.
A series circuit will have increased resistance if additional light bulbs or resistors are added. As a result, the circuit's current and lamp brightness will be diminished. The brightness of each light bulb gradually lowers as more are added. This observation suggests that the circuit's current is diminishing. Therefore, for series circuits, the overall current within the circuit falls when more resistors are added.
Thus, when you add additional lightbulbs (a type of resistor) to a series circuit then the light bulbs will get more dim with each bulb that is added. Hence option A is correct.
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the study of chemical reactions, such as growth, reproduction and respiration, that occur within a living organism is called:
Answer: Chemistry
Explanation:
Why do you think there were so many heated debates around the development of the cell theory?.
The debates around the development of the cell theory are fueled by the fact that yet there is no conclusive evidence about how the cell emerged in the geological past, thereby increasing the arrival of diverse theories.
What is the cell theory?The cell theory is a well-accepted scientific model that state all organisms are composed of one or more than one cell (the functional unit of all biological systems), which has been proved by empirical evidence.
The debates around this theory (the cell theory) are fueled by the fact that there is not conclusive evidence about the origin of the first primitive cells.
In conclusion, the debates around the development of the cell theory are fueled by the fact that yet there is no conclusive evidence about how the cell emerged in the geological past, thereby increasing the arrival of diverse theories.
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what is the cleansing process that removes organic material and reduces the number of microorganisms to a safe level?
Then cleansing process that removes organic material and reduces the number of microorganisms to a safe level is called Sanitization.
The purification procedure required by public health regulations to get rid of organic matter and bring the number of germs down to a safe level.
For restaurants and other facilities that make food, for instance, there are sanitizing procedures. Depending on your demands, the sanitizing procedure you use will change. You might be using a mop, a chemical, and water to clean a floor. Dishwashers can be used to sterilize the dishes. Or you might be wiping a TV remote with an antibacterial wipe.
Hence, proper sanitization is required during the spread of diseases like COVID 19 and thus, with the help of proper guidelines and sanitization disease spread can be prevented.
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Why do humans , bees , and flowers need glucose and not rocks ?
One of the most crucial chemicals in human biology is glucose, a six carbon aldose. Since glucose is a carbohydrate, it exists in a partially oxidized state and can give the cell a moderate amount of energy.
Because glucose is the primary catalyst for catabolism in all cells, it is significant. Since the cellular activities that comprise the complete TCA cycle and chemiosmosis rely mostly on glucose to supply energy, glucose is used to provide energy for cells. The products of each of the sequence of oxidations that glucose undergoes can effectively donate electrons, allowing them to be utilized for the process of oxidative phosphorylation to produce ATP.
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A sun and plant. An arrow pointing to the leaf is labeled A. The sun rays are labeled B. Arrows pointing away from the leaves are labeled C. A substance on the leaf is labeled D. Arrows from the ground entering the plant are labeled E. Which labels would correctly model photosynthesis?
Answer:
When the arrow is risen as the sun rays also because the shift of day to night
Explanation:
Plant
6. Use the diagram below to answer the following question.
2
Which labeled viral structure in the diagram above stores viral DNA similarly to the way the nucleus
stores cellular DNA?
F. 3
G. 1
H. 4
J. 2.
A particle of a compound is called what?