deoxigenated blood returns to the heart via the vena cava. where does the blood go from the vena cava
a. left ventricle
b. left atrium
c. right ventricle
d. right atrium ​

Answer:

A, C, E

Explanation:

Plant cells have specialized structures which are absent in animal cells. These include cell wall, chloroplasts, and central vacuole. Thus, correct options are A, C, and E.

Plant cell is the basic unit of all plants. Plant cells have unique organelles which are absent in animal cells. These organelles are responsible for specific functions which are important for the normal functioning of plant cell.

Plant cells have a unique cell wall which is absent in animal cells. Cell wall is made up of cellulose which is responsible for providing strength to the cells. Plant cells also have a chloroplast which contain a special pigment called chlorophyll. This pigment is responsible for photosynthesis. This organelle is absent in animal cells.

A large vacuole is also found in plant cells which is absent in animal cells. The vacuole contains reserved food material in the form of starch which is used in the unfavorable condition.

Therefore, the correct options are A, C, and E.

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The fact that both light & sound are waves of energy is among the most crucial things to comprehend about both.While sound waves & light waves both travel as waves and are manifestations of energy, they differ significantly in important ways.Light and sound travel at very different rates.

Both light and sound energy travel as waves, which is how they are comparable to one another.They have such a wavelength, amplitude, and frequency, to put it another way.

The fact that both light & sound are waves of energy is among the most crucial things to comprehend about both.

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Evolution by Natural selection occurs when the offspring of genotypes are produced in response to the environment. Hence the correct option is C  Penguins reproduce, offspring that look different from one another.

Charles Darwin and Alfred Russel Wallace developed the theory of Evolution by Natural Selection. For evolution by natural selection take place, Darwin described four essential conditions, these are:

As per the question, penguins produced offspring that look different from another, this must be because of the evolution by Natural selection. Hence the correct option is C.

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Answer:

process is faster

Explanation:

when CO2 accumulates in the blood it causes homeostatic imbalance eg it causes a fall in blood pH therefore gaseous exchange takes place faster to rid the body of this gas maintaining balance in the body

Answer:

The correct answer would be -

genotype - 50% WB and 50% WW

phenotype - 50% checkered chicken and 50% white-feathered chicken.

Explanation:

In the chickens, the checkered trait occurs due to the codominance type of inheritance as when two different alleles of color Black feather and White feather allele present together they both show their presence and express as checkered chicken.

White feather chicken: WW

Black feather chicken: BB

Checkered chicken: WB

Cross = WW and WB

gametes: W, W and W, B

Punnett square:

      W      W

W    WW   WW

B    WB     WB

Thus, The correct answer would be -

genotype - 50% WB and 50% WW

phenotype - 50% checkered chicken and 50% white-feathered chicken.

Answer:

The correct answer would be -

genotype - 50% WB and 50% WW

phenotype - 50% checkered chicken and 50% white-feathered chicken.

Explanation:

Answer:

morphogenesis

Explanation:

The developmental process is known as morphogenesis. This process that follows a plant throughout its entire life and shows how the plant shapes itself through the development of cells, tissues, and organs throughout its life. These developments are dependent on many factors such as the genetics of the plant as well as the environmental conditions that the plant is exposed to. All of this affects the type of organs that the plant develops such as leaves, flowers, and fruits.

Answer:

The answer is D (last one)

Explanation:

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Correct option is B.[tex]C_6H_12O_6 + 6O_2[/tex]

Because, the products formed after photosynthesis are Glucose and Oxygen, which again reacts during respiration to release Energy.

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Answer:

b. C6H12O6 + 6O2

Explanation:

That process is called respiration where glucose reacts with oxygen to form water, carbondioxide and ATP ( energy )

Here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.

The physical change is the change in form, such as when the candle is burned or cooled down, then the wax that is formed has the same properties as the candle, or the paper pieces after being torn have the same properties. Chemical changes involve the formation of new things, such as when paper is burnt, this produces ash with a different chemical nature, and when the vinegar and soda is mixed, it produces a different product.

Hence, here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.

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Answer:

Blood pressure would decrease.

Explanation:

If you don't drink enough water it's bad for your body since water is a source of living, and if you decrease the amount of water in your blood the blood pressure would decrease.

Answer:

A

Explanation:

Answer:

A. Nucleus

Explanation:

The avocado seed is a hard, massive core in the center of the fruit, just like the nucleus in a cell.

Answer:

If you multiple 1.02 × 2 = 2.04 meter, it is the total length of DNA in human diploid cells.

Explanation:

Answer:

A. Clumped

Explanation:

There are 3 common distribution patterns, namely clustered, evenly distributed, and random. The characteristics of the clustering distribution pattern are based on an individual's instinct to gather near their food source

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Answer:

food

Explanation:

Classification is crucial as it allows grouping anything into specific categories.

The taxonomic hierarchy of classification is,

Explanation:

        Dogs belong to the order Carnivora.

         Fox belongs to the phylum Chordata

         Snakes belong to the phylum Chordata and class Reptilia

         Arthropods are invertebrate animals with an exoskeleton, segmented body, and jointed appendages. Although most of the arthropods are insects there are some exceptions like King crabs, Lobster, and Shrimp.

        Amphibians have their class called amphibia and the class reptilia include a different class of organisms called reptiles.

       Lion belongs to the genus Panthera

        A Primate is a placental animal that is characterized by having distinguished hands and feet and a well-developed brain. Examples are Apes and humans.

Whereas a mammal is a warm-blooded vertebrate animal. They include humans, lions, apes, dogs, etc.

Hence all primates are mammals but all mammals are not primates.

Answer:

Epithelial cells are tightly packed, and this lets them act as barriers to the movement of fluids and potentially harmful microbes. Often, the cells are joined by specialized junctions that hold them tightly together to reduce leaks.

Explanation:

Answer:

ability to multiply

Explanation:

the more they multiply the more they can spread and that's how they can get more instructions to make it worse like coronavirus right now you can give it from person to person because the virus knows it can multiply and transfer over to another human being for germs or touch

Answer:

c. lifestyle

Explanation:

There are many things that can affect a person's health but not all can be controlled. For example, genetics are what people are born with and cannot be changed. Additionally, global and environmental situations can change but it takes an entire community; so, one individual cannot change these factors. However, one person can change their own lifestyle, assuming they have the willpower.

Answer:

Biodiversity or Biological diversity is a term that describes the variety of living beings on earth. It is described as degree of variation of life. Biological diversity encompasses microorganism, plants, animals and ecosystems such as coral reefs, forests, rainforests, deserts etc.

-In biodiversity, each species, no matter how big or small has an important role to play in ecosystem. It represents the wealth of biological resources available to us. It’s all about the sustaining the natural area made up of community of plants, animals, and other living things that is begin reduced at a steady rate as we plan human activities that is being reduced by habitat destruction.

Explanation:

A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity.

B) Ecosystem services provided by biodiversity include pollination, pest control, and nutrient cycling.

A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Genetic diversity refers to the variation in genes within a species, which allows populations to adapt and survive in changing environments. Concerns associated with the loss of genetic diversity include reduced adaptability to environmental changes and increased vulnerability to diseases.

Species diversity refers to the variety of different species within an ecosystem. Loss of species diversity can disrupt ecological balance, impact food webs, and lead to the extinction of keystone species. It can also result in the loss of potential sources for medicines, agricultural crops, and other valuable resources.

Ecosystem diversity refers to the variety of different ecosystems in a region. Loss of ecosystem diversity can result in habitat loss, fragmentation, and degradation, leading to the decline or loss of specialized species adapted to specific habitats. It can also impact the provision of ecosystem services, such as water purification, climate regulation, and nutrient cycling.

B) Species and genetic diversity provide several ecosystem services to humans. One example is pollination, where diverse species of pollinators, such as bees, butterflies, and birds, ensure the reproduction of flowering plants and agricultural crops. Another ecosystem service is pest control, where diverse predator species help regulate populations of agricultural pests.

Ecosystems also provide the service of nutrient cycling, where diverse decomposers, such as fungi and bacteria, break down organic matter and recycle nutrients back into the soil. This process is crucial for maintaining soil fertility and supporting plant growth. Lastly, diverse ecosystems contribute to climate regulation by absorbing and storing carbon dioxide, a greenhouse gas that contributes to climate change.

Overall, species and genetic diversity support the functioning and resilience of ecosystems, benefiting human well-being by providing essential services like pollination, pest control, nutrient cycling, and climate regulation. Protecting and conserving biodiversity is essential for maintaining these services and ensuring a sustainable future.

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Answer:

Explanation:

Before answering the question, we need to know a few concepts.

Artificial selection is the selecting practice of a specific group of organisms in a population -that carry the traits of interest- to be the parents of the following generations.  

Parental individuals carrying phenotypic values of interest are selected from the whole population. These parents interbreed, and a new generation is produced.  

The selection differential, SD, is the difference between the mean value of the trait in the population (X₀) and the mean value of the parents, (Xs). So,  

SD = Xs - X₀    

Heritability in the strict sense, h², is the genetic component measure to which additive genetic variance contributes. The heritability might be used to determine how the population will respond to the selection done, R.  

h² = R/SD

The response to selection (R) refers to the metric value gained from the cross between the selected parents. R can be calculated by multiplying the heritability h², with the selection differential, SD.  

R = h²SD  

R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),  

R = X₁ - X₀  

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Now that we know these concepts and how to calculate them, we can solve the proposed problem.

Available data:  

• You are decreasing the backfat in the hogs.

• The hog population mean backfat content = 20.2mm → X₀

• The selected hogs had a mean backfat content of 9.5mm → Xs  

• Heritability is 0.47 → h²

According to what we sow previously, we need to find out the value of X₁, which reflects how tall the new generation of corn will grow.  

• We know that R = X₁ - X₀, so we need to clear this formula to calculate X₁

X₁ = R + X₀  

We already know that X₀ = 20.2mm  

Now we need to calculate R.  

• R = h²SD  

We know that h² = 0.47,  

Now we need to calculate SD

• SD =  Xs - X₀  

Xs = 9.5mm → Parentals media height

X₀ = 20.2mm → Population media Height

SD = Xs - X₀  

SD = 9.5 - 20.2

SD = -10.7  

Knowing this, we can calculate R

R = h²SD

R = 0.47 x -10.72

R = -5.3

Finally, once we know the R-value we can calculate the X₁ value

X₁ = R + X₀

X₁ = -5.3 + 20.2

X₁ = 14.9 ≅ 15mm

Answer:

47

Explanation:

Yes it is 690.00 hoepnthsi hekls

The five conservation related conventions are:

1. Convention on Biological Diversity

2. Convention on International Trade in Endangered Species of Wild Fauna and Flora

3. Convention on Migratory Species

4. Ramsar Convention on Wetlands

5. Convention on the Conservation of Antarctic Marine Living Resources

The Convention on Biological Diversity is the most embracing of these conventions, as it provides the most comprehensive coverage of conservation related issues. Its focus is on the conservation of biodiversity, sustainable use of resources, and the fair and equitable sharing of benefits arising from the use of genetic resources. Additionally, it provides strategies and commitments to ensure that exploitation of living resources is done with sustainability and responsibility, bringing it into line with the principles and goals of ecological conservation.

Answer:

3. Increased greenhouse gas emissions

Explanation:

Solar, wind, wave, and nuclear energy are all ways of producing energy without producing the negative outcome of increased greenhouse gas emissions. Greenhouse gases, such as carbon dioxide and methane, are released into the atmosphere through the burning of fossil fuels, such as coal, oil, and natural gas. These gases trap heat in the atmosphere and contribute to global warming and climate change. Solar, wind, wave, and nuclear energy, on the other hand, are forms of renewable energy that do not produce greenhouse gases when they are generated. They are considered more environmentally friendly alternatives to fossil fuels, and their use can help to reduce greenhouse gas emissions and mitigate the impacts of climate change.

Answer:

  .

Explanation:

Answer:

this website make summery about antibodies https://www.mblbio.com/bio/g/support/method/antibody-role.html#:~:text=Antibodies%20have%20three%20main%20functions,holes%20in%20the%20cell%20wall).

Answer:

They're composed largely of blood plasma

Explanation:

Answer:

a

Explanation:by ages and physical similarities