This chemical equation represents a chemical reaction.
2HNO3 + Na2SO3 - 2NaNO3 + H2O + S02
Which chemical is a reactant in the reaction?
O A. Na so
B. SO2
O C. H20
OD. NaNO3
Answer:
OPTION A is the reactant
Explanation:
This is an acid-base reaction (neutralization): HNO3 is an acid, Na2SO3 is a base.
Answer:
A.
Explanation:
reactants are on the left side of the arrow
DOES EXERCISE HELP PREVENT A HEART ATTACK?
can somebody please help me answer this question rn like i need it and it’s environmental science btw
Yes
According to the National Institutes of Health a half hour of moderate aerobic exercise daily can decrease risk of heart attack by up to 50%.
Hope i helped!!
Plz mark brainliest! :)
thx
In which kind of relationship one organism benefits and the other has no affect?
1.Commensalism
2.Amensalism
3.Mutualism
4.Parasitism
Answer:
commensalism
Explanation:
one benefits and the other derives neither benefit nor harm.
Scientists have successfully inserted the human gene for insulin into bacteria.
The resulting bacteria are able to produce human insulin as shown above. Which of
the following best explains why this is possible?
Answer:Human plasmid can mutate
Explanation:
1. What is the name of the process, where the cells absorb oxygen and nutrients, while getting rid of carbon dioxide and other waste products?
2. What is needed in the body for energy that is formed in the cells?
3. Why are not all cells in the body the same?
4. What is in the cell nuclei of cells?
5. What is the role of genes?
6. Plant cells have strong cell walls. Why do animals with only a thin cell membrane survive around the cells?
7. Fill in the missing words.
a) ------ is the body's smallest building blocks.
b) Cells that are similar to each other together forms one ------
c) An organ consists of several different ----- ones and together with other organs forms one -------
What type of wave moves the audio and visual signals?
Answer:
electromagnetic waves to be honest but Transducer Waves
Explanation:
Answer:
A carrier wave.
Explanation:
I just took the Televisions Quiz and got it right. :)
some one plz help me asapp I will give brainliest
what conclusion can you make regarding how humans affect biodiversity? use evidence from the graph to support your answer
Answer:
humans have a large affect on biodiversity.
this is due to human activities that interact with biodiversity such as deforestation and over fishing
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
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FORENSIC SCIENCE!
Which of the following is an example of individual evidence when it comes to carpet?
Group of answer choices
fiber length
dye composition
the carpet padding
the type of fiber
Answer: the carpet padding
Explanation:
Individual evidences are simply refered to as properties of physical evidence that has to a high degree of certainty for a common source. For individual evidences, the suspect is being narrowed down to a single individual. Examples include fingerprints, toolmarks etc.
In the question above, the example of individual evidence when it comes to carpet will be the carpet padding. While other options such as fiber length, dye composition and the type of fiber can still relate to other things, carpet padding narrows it down to carpet.
Match the columns and chose the correct option. Column A Column B 1.The male reproductive part of a flower i) sepal 2. The female reproductive part of a flower ii) stamen 3. The part of the flower which protects it in bud stage iii) ovules 4. Part of a flower which develops into a seed iv) carpel
Explanation:
1.Stamen
2.carpel
3.sepal
4.ovules
Why is it a good idea to set goals for a reading?
Answer:
To be able to remember more of the book you are reading.
Explanation:
Please help! (50 points) PS Sorry, my last question only gave 5 points. My apologies.
In a farm, soy beans were the only crop that was planted on several hectares of land. A farmer noticed fungus was growing all over the soy bean fields. Predict what might happen to the soy beans and the fungus.
Thanks!
Answer:
The soybean and the fungus might die because both of them are depending their lives on the said crop and both of them are having competition in having the nutrients for their survival.
The soy beans might be damage and the products of the farmer will decrease.Hope this helps and if you could mark this as brainliest. Thanks!
What is the main function of the circulatory system in multicellular organisms?
Answer:
Multicellular organisms have developed transport and circulatory systems to deliver oxygen and food to cells and remove carbon dioxide and metabolic wastes.
Explanation:
Answer:
To transport materials throughout the body
Explanation:
What is the primary function of ground tissue?
Answer:
While epidermal tissue mediates most of the interactions between a plant and its environment, ground tissue conducts the basic functions of photosynthesis, food storage, and support.
Answer:
A) providing support for stems and leaves
Explanation:
One of its main functions is support. Ground Tissue will provide support for stems and leaves, keeping them alive and working well.
Hope this helps! Good luck with the rest of your work!
List three different types of cells in the human body?
(PLEASR HELP ME)
Which of the following most accurately identifies the missing "?" in this points
rock cycle model?
Igneous
Magma
Metamorphic
Sedimentary
Answer:
I think Sedimentary
Explanation:
Can someone answer this thanks
Answer:
Plan evacuation routes to higher ground.
Answer:
The answer is 3
Explanation:
Which two types of clouds usually do not produce rain or snow?
A. Altostratus
B. Cumulonimbus
C. Cirrus
D. Cumulus
Answer:
It is b or option 2, Cumulonimbus
Answer:
The answer is C and D
Explanation:
They do not produce ANY rain or snow they are the peaceful clouds sometimes little drips but most of the time basically all the time it is clear sky!
Circle the word or phrase that best completes the sentence.
1. Fermentation is a chemical reaction that occurs in the (cytoplasm /
mitochondria/matrix / membrane). Because it is (aerobic / anaerobic),
fermentation (requires / does not require) oxygen. Compared to cellular
respiration, lactic acid fermentation generates (much less / much more!
about the same amount of) ATP and is less efficient.
Answer:
aerobic
Explanation:
Answer:
Cytoplasm, Aerobic, Does not require, much less
Explanation:
Because it is right
Human activities can have an impact on natural disasters. t or f
Answer:
True
Explanation:
Take Hurricanes for example, As global warming keeps getting worse, We are going to keep having more and more since the ocean will stay warmer longer which is showing right as this moment. Earthquakes, Humans can interfere with this say they are mining near tectonic plates and they have an explosion occur, This can cause a major or minor earthquake to occur as the plates shift among one another which can cause violent shaking and maybe even huge faults to occur in the earth's surface
The melting of wax is a physical change , yet the burning of wax is a chemical change . What is the essential difference between the physical change and chemical change of wax in a burning candle
Answer:
A physical change does not change the identity of an element but a chemical change does.
Explanation:
DNA- TAC ACC ACA GTG
mRNA- ?
Because most nerve cells do not typically undergo mitosis, they are generally not capable of which of the following
Answer options:
producing enzymes generating more nerve cells performing cellular respiration transporting ions against a concentration gradientAnswer:
generating more nerve cells
Explanation:
Mitosis is a type of cell division that creates new cells for growth, regeneration, and repair of tissues in an organism.
The cells produced are identical daughter cells.
However, their inability to perform cell division does not affect their ability to perform other process like enzymes, respiration, and ion transport.
List the 5 clues that Wegener used to prove continental drift and that Pangaea once existed?
Answer:
1. same plants on different continents
2. similar animals present on different continents
3. he put together the continents on the map and saw they fit together
4. geological features that spread across continents
5. finding rocks and materials in many different places that couldn't of formed due to climate
The typical growth period of a cell occurs during which stage of the cell cycle?
Answer:
Interphase
Explanation:
interphase is composed of G1 phase (cell growth)
Give an example of active transport. Explain what occurs during this process, including the type of substances that is being transported, the concentration gradient, and any structures in the cell membrane or within the cell that are used.
If blue crabs dropped out of the food chain, would you expect to see a decline in any other organisms of the Bay? which organisms?
Answer:
Any organism that eats the blue crab will decline.
Explanation:
If blue crabs dropped out of the food chain, I would expect to see a decline in eels, drums, spots, Atlantic croakers, striped bass, sea trout, and catfish because crabs are an important food source for these organisms. Some sharks, cownose rays, Kemp’s riddley, and loggerhead sea turtles also eat on blue crabs at different stages of life. If blue crabs dropped out of the food chain, it is possible that population with decline in any of these organism from the Bay.
Answer:
You would expect to see a decline in eels, drums, spots, Atlantic croakers, striped bass, sea trout, and catfish because crabs are an important food source. If the dropped of the food chain the predators population will decrease and the secondary and primary organisms will increase
Explanation:
How do these materials provide the plant with energy
an organism that obtains energy by feeding on other organisms
Answer:
Heterotrophs/ or consumers
Explanation:
Heterotrophs, or consumers, are organisms that must obtain energy by consuming other organisms (autotrophs or other heterotrophs) as food.
FORENSIC SCIENCE!What is chromatography used for?
Group of answer choices
DNA extraction
Urinalysis for drugs or alcohol
DNA amplification
To see if a hair is animal or human
URINALYSIS FOR DRUGS OR ANIMALS