Answer:
Because plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire. Dandelion seeds float away in the wind.
Explanation:
Answer:
Plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire.
Which two statements explain how the uneven heating of Earth's surface
affects Earth's weather patterns?
A. Warm air continuously leaves the poles and moves toward the
oceans.
B. Warm air rises and cool air sinks, forming a convection current
C. Warm air moves away from the equator toward cooler regions.
D. Warm air flows from the northern hemisphere to the southern
hemisphere.
Explanation:
I think it is b because when warm air rises it always affects the earths weather pattetn
Plzz helpppp!!!!! Will give brainliest and 10 pts!!!!
Explanation:
Red-shift
Emission spectra
Light from a star does not contain all the wavelengths of the electromagnetic spectrum. Elements in the star absorb some of the emitted wavelengths, so dark lines are present when the spectrum is analysed. Different elements produce different patterns of dark lines. The diagram shows part of the emission spectrum of light from the Sun.
A gradient colour spectrum of the sun.
Spectra from distant galaxies
Astronomers can observe light from distant galaxies. When they do this, they see it is different to the light from the Sun. The dark lines in the spectra from distant galaxies show an increase in wavelength. The lines are moved or shifted towards the red end of the spectrum. This effect is called red-shift. The diagram shows part of the emission spectrum of light from a distant galaxy.
A gradient colour spectrum of a distant star.
Red-shift and speed
Astronomers see red-shift in virtually all galaxies. It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to us, shifting them towards the red end of the spectrum. The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth
Which class of protozoa shows nuclear dimorphism:
Answer:
Protozoan Tetrahymena
hope it helps!
Protozoa are eukaryotic organisms that are single-celled and free-living. Paramecium and Tetrahymena are the members of the ciliated class of Protozoan showing nuclear dimorphism.
What are Protozoa?Protozoans has been defined as unicellular eukaryote that is either parasitic or free-living. Ciliate is one of the classes of Protozoans that are characterized by the presence of cilia on the outer surface of the body.
The genus Paramecium and Tetrahymena of ciliated Protozoans show nuclear dimorphism as they have two different types of nuclei in their cell. One of the nuclei is somatic and the other is germline.
This property of nuclear dimorphism is seen in the lower organism like the Protozoans that needs a micronucleus for reproduction and the other macronucleus for the functioning and regulating of the cell. This property of the Protozoans makes them different from the other eukaryotes that possess only a single nucleus in their cell.
Therefore, the ciliated class of Protozoans shows nuclear dimorphism.
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A student is investigating mitosis by examining detailed pictures of the process the student wants to observe the formation of the nuclear envelope.the student should focus on pictures of which phase of mitosis
telophase
,prophase
,metaphase
,anaphase
Answer:prophase
Explanation:
Telophase, the fifth and final stage of mitosis, occurs when a parent cell's replicated genetic material is split into two identical daughter cells.
What is mitosis?Mitosis is a stage of the cell cycle during which replicated chromosomes are separated into two new nuclei. Mitosis results in the formation of genetically identical cells with the same number of chromosomes. As a result, mitosis exists as also referred to as equational division. Mitosis is the division of a single cell into two identical daughter cells (cell division). Mitosis is a nuclear division process that occurs in eukaryotic cells when a parent cell divides to produce two identical daughter cells. Mitosis is the separation of the duplicated genetic material carried in the nucleus during cell division.To learn more about mitosis, refer to:
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Explain in detail how to decide the number of replications in a simulation study. Use fixed-sample-size and sequential procedures as examples. Describe the pros and cons of these two procedures
Explanation:
Fixed sample size:
In this fixed sample size the data is studied and checked in order to find a relationship. The benefits it is easy to produce, and with it less reliable outcomes can be given.
Sequential procedures:
→Sequential procedures helps while we are collecting the data.
→At an interim analysis, data collection can be stopped whenever the results are convincing enough to conclude an effect is present.
→Or otherwise the more data can be collected, or if needed the study can be terminated whenever it is extremely unlikely the predicted effect will be observed if data collection would be continued.
→In this two or more blocks of different sizes are prepared for testing.
→Pros being it provides better results and is less time taking, as we can stop once the relation is seen, con being it is difficult to perform.
How are the endoplasmic reticulum and Golgi apparatus
similar?
Both contain their own kind of DNA.
O Both are made up of membranes consisting of a lipid bilayer.
O Both are involved in producing chemical energy for the cell.
O Both are found only in plant cells and not in animal cells.
Answer:
Both are made up of membranes consisting of a lipid bilayer.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
Generally, cells have the ability to independently replicate themselves. These cells can be compared to the kind of structures found in a business or factory, where you have different workers performing different functions.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles.
Golgi apparatus is like a packaging unit because it prepares the protein for export by chemically tagging them.
Also, the endoplasmic reticulum is like an assembly line because it is where the ribosomes perform their tasks.
Hence, the endoplasmic reticulum and Golgi apparatus are similar because both are made up of membranes consisting of a lipid bilayer.
Explain how asexual reproduction works. what organisms undergo asexual reproduction?
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from a single cell or from a multicellular organism, inherit the genes of their single parent.
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from from a single cell or from a multicellular organism, inherit the genes of their single parent.
(it what it says on web.)
Explanation:
Which image shows both potential and kinetic energy?
NEED HELP ASAP
Which statements describe the energy in a food web? Select three options.
Answer:
The most energy is in the beginning of the food web, and a portion of that is passed on, and a portion of THAT is passed on, and it keeps getting passed on until it reaches a predator on the top
Explanation:
Answer:
energy is in the beginning of the food web
Which organism is least related to the bird on this cladogram?
Answer:
SHARKS HAVE THE LEAST TRAITS IN COMMON WITH BIRDS.
Identify the statement that is true about Charles Darwin's theory of evolution by natural selection. Choose one: A. In each new generation, those that survive and those that don't are determined randomly. B. Organisms that are able to survive and reproduce pass on characteristics to their offspring. C. Populations of organisms continuously increase over time. D. As environments change, individual organisms choose to change to better suit the new environment.
Answer: Option B.
Organisms that are able to survive and reproduce pass on characteristics to their offspring
Explanation:
Charles Darwin theory of natural selection states that organisms possesses heritable traits that they developed and are able to survive, reproduce and adapt to their environment and they pass those traits to their generations. It is a differential survival mechanism.organisms that are able to survive and reproduce pass on the heritable characteristics to their offsprings and produce more organisms.
The statement that is true about Charles Darwin's theory of evolution by natural selection is option "B" which is Organisms that are able to survive and reproduce pass on characteristics to their offspring.
What is Charles Darwin's theory of evolution?Charles Darwin's theory of evolution is also known as darwin's theory.
It is said that evolution occurs by natural selection. Individuals in a species show divergence in physical features. This divergence is because of dissimilarities in their genes.
Thus, option "B" is Organisms that are able to survive and reproduce pass on characteristics to their offspring.
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What do these two changes have in common? snowflakes forming in a cloud and cellular respiration
Answer:
The product of both reaction is water.
Explanation:
Both snowflakes forming in a cloud and cellular respiration have similarity of water means both releases or produce water in the end of the process. The snowflakes is made of water molecules which is present in solid state while on the other hand, when glucose is broken down in the presence of oxygen during the process of respiration, it produces carbondioxide gas and water so the product of both reaction is water.
Which habit would have the least variation in its salinity
Answer:
Mangrove forest
Explanation:
Mangrove forest exist only in high saline environment. Lake is a closed type body of water so it is expected with the least variation of salinity.
Animals get the most of the nitrogen they need
What role does the brain play when it comes to our senses?
e a sports
is in the trash
Answer:
K
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Answer:
and now you're trash
Explanation:
Hair analysis may be used to determine all of the following except.
O an assessment of nutritional deficiencies
O a history of the use of drugs and other toxins
where the hair originated, human or other animal
O presence of heavy metals
O hair analysis is helpful to determine all of the above
Hair analysis may be used to determine all of the following except the presence of heavy metals. Thus, option C is correct.
What is metal?A metal has been defined as a material that has to be prepared freshly and polished and fractured that shows that a lustrous look or appearance and it conducts the electricity as well as heat well relatively. The main nature of metal has that they are totally malleable and ductile and these are the properties of matter which is due to metallic bond which lies in between the atoms or the molecules present in the metal.
There are several properties of metal and these properties are the metals have high point of melting, and the metals are good conductor of electricity, as well as they are good conductors of heat also. The metals consist high density and they are malleable and ductile in the nature.
The main nature of metal has that they are totally malleable and ductile and these are the properties of matter which is due to metallic bond which lies in between the atoms or the molecules present in the metal.The metals consist high density and they are malleable and ductile in the nature.
Therefore, Hair analysis may be used to determine all of the following except the presence of heavy metals. Thus, option C is correct.
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Which provide evidence for the general theory of relativity? Check all that apply
gravitational lensing
the constancy of the speed of light
the curvature of space-time
changes in Mercury's orbital path
O gravitational redshift
Answer:
Gravitational redshift
Explanation:
Gravitational redshift, changes in a planet's orbital path, gravitational lensing provides concrete evidence for the general theory of relativity. Hope this is helpful and the answer you were looking for!
Answer:
1 4 5
Explanation:
Question 10 of 25
The development of cars has been good in some ways and bad in others. The
car has allowed for better transportation but it is also responsible for a great
deal of pollution. Which activity helps solve the pollution problem through the
use of new technology?
A. Encouraging people to walk more
B. Encouraging people to ride a bus
ОО ОО
C. Building cars that give off less pollution
D. Building fewer cars
SUB
Biology is the study of nonliving things.
Answer:
False
Explanation:
Because Biology is the study of living organisms.
what do you think the seed need to make it start to grow
HI EVERYONE ^_^
Why the ureolytic bacteria produce CaCO3?
Answer:
Ureolytic bacteria hydrolyze urea to generate ATP by the efflux of ammonium ions through ATP-synthase, producing carbonate. In the presence of calcium ions in excess, calcium carbonate will precipitate.
The maximum number of organisms of a particular species that can be supported by an environment is called
a logistic growth
b exponential growth
c carrying capacity
d population density
Answer:
its C, carrying capacity
Explanation:
I don't know I'm smart I guess lol
Carrying capacity is the maximum number of species an environment can support. Therefore, option "C" is correct.
What is carrying capacity?Carrying capacity is the average number of the particular species that a be supported by a partial habitat is known as carrying capacity. The importance of the carrying capacity is that it helps in the determination of the size of the population that can be tolerated and supported by a particular environment.
The limiting factors of the area of habitat are water, availability of food, and space. The ways to increase the carrying capacity of the are the elimination of the competitor and decrease in the number of predators.
Carrying capacity helps in identification of the how much habitat can support species.
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The lesson question for this lab is “What is the effect of the type of food available on the frequency of different types of bird beaks?” The the lab procedure you just studied should help you address this question. Will it? Explain.
Answer:
Yes, this lab will address the lesson question.
The procedure shows two different food situations—three foods and two foods.
However, the initial populations of birds are the same.
Therefore, in the end, you can compare generation three for each food situation and measure the effect of the food change.
how might the biotic and abiotic features change during different seasons?
Answer:
The biotic and abiotic features change during different seasons through various factors.
Explanation:
Biotic and abiotic factors are referred to as the living and non living components of the ecosystem respectively. An example of biotic factor include plants, animals and an example of abiotic factors are water, sunlight etc.
The biotic and abiotic features change during different seasons through various factors. Biotic factors in dry season for example will lead to a decrease in abiotic factors such as rainfall and increase in abiotic factors such as sunlight while leading to a decrease in biotic factors such as plants and animals through the lack of water vital for them.
Biotic factors in wet season for example will lead to a increase in abiotic factors such as rainfall and decrease in abiotic factors such as sunlight while leading to a increase in biotic factors such as plants and animals.
Iridium (Ir) is a rare element on Earth, but common in
asteroids
volcanoes
the oceans
icy comets
When does translation of mRNA begin in prokaryotic cells?
Answer:
during initiation
Explanation:
when an initiator tRNA anticodon recognizes a start codon on mRNA bound to a small ribsomal submit.
Which trait is unique to birds?
Flight
Wings
Endothermic
Feathers
Two colleagues that share the same office are exposed to the flu virus one week in January. Janet just recovered from the same flu virus two weeks earlier, while Mark has not been sick yet this winter. Which person do you expect would be more likely to become sick with this flu virus and why?
Janet: since she already had the flu, her immune system is weaker than Marks.
Janet: she will most likely get the flu again, and a more severe case of it.
Mark: he has not acquired any active immunity to the flu, and Janet has.
Mark: he has only passive immunity to the flu which will not benefit him in this case.
I believe Mark is more likely to get sick with the flu virus because Janet has acquired a slight immunity because she was infected with it while Mark has not been infected with the virus
g It has been proposed that integrin proteins undergo conformational changes when they bind to small molecules diffusing into the extracellular matrix. Because integrins are transmembrane proteins, a change in their conformation can be transmitted across the membrane to the portion of the protein that interacts with intracellular structures. What biological role does this allow integrins to play in a cell's function within a multicellular organism
Answer:
Cell-cell communication
Explanation:
Integrins are heterodimeric transmembrane receptors that facilitate the adhesion to the cell-extracellular matrix by attaching the cytoskeleton to this matrix. Moreover, integrins also help the cells bind with other cells. Integrins are responsible for the communication between cells and thus control tissue structure. These receptors are responsible for the attachment of fibroblasts to collagen, as well as the attachment of fibroblasts to fibronectin. It is also important to highlight that the binding of integrins with their corresponding ligands activates signaling pathways that control diverse cellular processes including, among others, cell growth, cell development, cell migration, phagocytosis, etc.