What is the evolutionary biology the study of

The temperature is different. St. Louis is hotter by approximately 10 degrees

Answer:

B. Hurricanes

B. Hurricanes

That is the answer

Answer

During this reaction, carbon dioxide and water are converted into glucose and oxygen. The reaction requires light energy, which is absorbed by a green substance called chlorophyll. Photosynthesis takes place in leaf cells. These contain chloroplasts, which are tiny objects containing chlorophyll.

Answer:

when you don't take care of your self by not eating healthy, not exercising, and smoking or any kind if adult-like thing you see

Explanation

Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm. ... Antibiotics kill or inhibit the growth of susceptible bacteria. hope this helps

Answer:

increase in the rate of skin cancer

Emission of large amounts of CFCs from a factory can harm the ozone layer, allowing more harmful UV radiation to reach Earth, leading to health issues like skin cancer and impacting our climate.

A factory emitting large amounts of CFCs or chlorofluorocarbons, into the atmosphere can have significant impacts on both our environment and on health. CFCs, found in items like refrigerants and aerosols, are greenhouse gases that can cause damage to the Earth's protective ozone layer.

Through a chemical reaction triggered by UV light, CFCs decompose to release chlorine atoms, which then react with ozone molecules in the stratosphere, resulting in the depletion of ozone. This phenomenon, known as the 'ozone hole', allows more harmful ultraviolet radiation from the Sun to reach the Earth's surface.

Ozone depletion has been linked to numerous environmental and health issues, such as skin cancers and cataracts in humans, and negative effects on crops and marine life. Moreover, CFCs also contribute to global warming due to their heat-trapping capabilities, leading to complex and potentially catastrophic changes in our climate. Therefore, efforts are globally undertaken to reduce the use of CFCs and protect our planet.

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I took the class I think it’s Antarctica

Answer:

some molecules are polar because they have an unbalanced electrical charge because of their bent shape or they don't share electrons equally between their atoms

while other molecules are nonpolar because they have a balanced electrical charge cause they do not have a bent shape and share electrons equally between their atoms.

Explanation:

some are polar while others are nonpolar because of the way their electical charge is arranaged within themselves.

Polar molecules occur when there is an electro negativity difference between the bonded atoms. Non-polar molecules occur when electrons are shared equal between atoms of a diatomic molecule.

Polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.

Polarity results from the uneven partial charge distribution between various atoms in a compound. Atoms, such as nitrogen, oxygen, and halogens, that are more electronegative have a tendency to have partial negative charges.

The purpose of a polarity test to ensure that all single pole devices (fuses, switches and circuit breakers) are connected in the phase conductor only.

Learn more about polar molecules:

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Answer:

(if these are your choices)

A. They are lobed, simple leaves and are attached staggered on the branch.

B. They are not heart shaped and are attached staggered on the branch.

C. They are compound, broad leaves and are attached oppositely on the branch.

D. They are nonlobed, simple leaves and are attached oppositely on the branch.

the correct answer is D.

Explanation:

Answer: D

Explanation:

C is the correct answer. > is made mostly of hydrogen and helium

Answer:

B, C

Explanation:

B,C

The top layer of the ocean is the warmest because it absorbs most of the sunlight, resulting in a less dense water that stays at the surface. This layer, mixed by winds and currents, is called the mixed layer. Below this, temperature decreases rapidly in the thermocline, and deep layers receive no sunlight, remaining cold and stable.

The top layer of the ocean is the warmest because it is most directly affected by the sun's energy. The sunlight efficiently heats the ocean's surface, resulting in a warm, less dense layer of water. This layer is referred to as the mixed layer, which has a uniform temperature due to the mixing effects of surface winds, waves, and currents. Beneath this mixed layer is the thermocline, a zone where the temperature drops rapidly with increased depth. Deeper parts of the ocean are substantially cooler because sunlight cannot reach them, and water here has minimal interaction with atmospheric temperatures.

The density of seawater, which is determined by its temperature and salinity, contributes to the ocean's stratification, with denser (colder and saltier) water lying below lighter (warmer and less salty) water. Human activities have increased the temperature at the ocean's surface, and satellite observations have confirmed the expansion of low-productivity areas in the ocean due to reduced vertical mixing and nutrient supply caused by this increased stratification.

Furthermore, the ocean absorbs a significant amount of the Earth's heat, with most of it concentrated near the surface. This is due to the ocean's high specific heat capacity, which allows it to absorb a lot of energy with only a small increase in temperature. Overall, the ocean's top layer remains the warmest due to a combination of sunlight absorption, wind-induced mixing, and the high heat capacity of water.

Answer:

A

Explanation:

Due to the inhibition of convection by the magnetic fields, these areas (usually occur in pairs corresponding to the two poles), the hot plasma from the sun’s interior doe not reach the surface of these areas hence creating local regions that are cooler than the rest of the photosphere. This cooler regions appear darker when observed with a telescope and are called sunspots.

so the answer is : B. Magnetic field reversal causes portions of the sun to die slowly over time, leaving dark marks.

Sunspots are the most prominent features of the sun; medium size spots about the size of the earth. Sunspots form and disappear for days or weeks. Sunspots are the coldest part of the sun and usually appear in pairs. Sunspots occur when a strong magnetic field appears on the sun's surface and causes the area to cool, from 6000 ° C to 4200 ° C; the area appears as a dark spot. The darkest area at the center of the spots is called the umbra; this is where the strongest magnetic field. The less dark areas around the umbra are called the penumbra. Sunspot activity is an 11-year cycle. Sunspots are an indicator of magnetic activity in the sun. Magnetic fields in spots store energy that is thrown in flares. As a result, flares usually appear in cycles that resemble 11-year cycles. Sunspots usually occur in groups (usually as simple pairs) but sometimes in complex arrangements with many complex spots and shapes. This unusual area often produces flares. Space weather forecasters use the complexity and shapes of sunspots to predict flares — the more complex the groups of spots there are, the more likely a flare will occur there.

For more than 300 years, the average number of sunspots regularly varies in an 11-year cycle. Every 11 years, the polarity of the magnetic field in the solar hemisphere changes. So, the complete solar magnetic cycle is 22 years.

Sunspots; https://brainly.com/question/1652375,https://brainly.com/question/3095225,https://brainly.com/question/12701363.

Class: Junior high.

Subject: Biology.

Keywords:  Sunspot, magnetic, earth.

Which structural characteristic is seen in RNA but not in DNA?​

Answer:

The correct answer is the difference in the nucleotide constituents.

Explanation:

Both DNA and RNA are the nucleic acid present in the organisms but both show certain structural differences in their nucleotide as followed :  

1. Sugar- sugar in RNA is known as ribonucleic acid whereas nucleic acid in DNA lacks OH group at 2' carbon position and is known as de-oxy ribonucleic acid.

2. Nitrogenous base- four types of bases bond with each other namely adenine, cytosine, guanine and thymine in DNA similar to RNA but RNA has "uracil" present in their sequence instead of thymine.

Thus, the difference in the nucleotide constituents is the correct answer.

the answer is plant because it produces it's own food source, and is also provides nourishment for herbivores and other animals.

Answer:

A. Plant

Explanation:

A producer is any organism that serves as a source of food for other organisms in a food chain, such as plants. With the definition of Producer in mind we can then understand that a caterpillar is a consumer and a lizard is a insectivore and/or carnivore and a snake is a carnivore, this leaves a plant as a producer.

discovering dna was the greatest step in celld3

Invention of Microscope was the greatest step toward the discovery of cells.  

Option C

Explanation:  

The major step anybody have taken in the cellular studies is the invention of microscope. ''Anton wen Leeuwenhoek'' is the first man who discover a cell with life under the microscope. The first cell which was taken under the vision of microscope in 1674 was of an algae. Microscope is the instrument which helps to see the organism in minute size under the clear lens, this helps the study of the cell easier because of which the tiny cell organelles were easier to study.

The correct option(s) are : 1 and 2. Or in letter form (A and B).

I just took this on my cumulative review test!

Good luck to the future people taking this:)

Answer:

Options (1) and (2)

Explanation:

The atmosphere is defined as the gaseous envelope that surrounds the earth. It is comprised of various gases which are found to be present at a certain amount, and this amount can also be increased or decreased depending on the processes and activities that take place on the earth's surface.

The atmosphere is helpful because it protects the lives present on earth from the harmful incoming UV radiations emitted from the sun. It also protects the water present on earth from getting evaporated into the atmosphere.

Thus, the correct answers are options (1) and (2).

Answer:

Explanation:

If it is inexhaustible it means that there is so much of it that we can never use it all. Some people would call the atmosphere inexhaustible. That might be a dangerous assumption, but it and water are the only things that I can think of that are close to being inexhaustible.

You don't have to set aside grain fields to grow water and air.

Answer:

either A , D

Explanation:

all for have a vertabrae,although the gorilla and the chimpanzee do show signifacant same structure.

Answer: The correct answers are A and D

Explanation:

Two organism appears to be similar because they share more recent common ancestor. The body structure of the chimpanzee and gorilla appear similar because they share most recent common ancestor.

The organism frog, dog, gorilla and chimpanzee have vertebral column which means that all the four organism share the common vertebral ancestor.  

Answer:

I believe the answer will be UCG.

Explanation:

When the DNA is translated to RNA, the codon T becomes U, and since A and T go to together normally, U would now go with the A codon. So, I believe the answer is UCG. Sorry if I'm wrong, it's been a little while. :)

Answer:

the 2nd one

Explanation:

Answer: you answer is b sorry if wrong home dog

Based on my observations, I can conclude that lithospheric motion of the South American plate with the Nazca plate and the African plate causes the earthquakes to engage nearest to volcanic activity causing it to either erupt the volcano, or increase the damage caused by the volcano.

Answer:

B. Meteorites struck the region that Mexico now occupies

Explanation:

The meteorite or comet that struck in the area where Mexico is located in the present is not part of the consequences of the extinctions event. The reason why it is not part of the consequences is that it is the factor that caused the consequences, so it can not be both the thing that caused something and also the consequence of it. This meteorite or comet managed to create such a huge explosion, that it managed to wipe out pretty much all large and medium sized land dwelling animals. And that was not caused only by the explosion itself, but also because it drastically changed the climate with the huge amounts of ashes and dust released into the atmosphere, as well as the triggering of the volcanoes around the world. This mass extinction though opened up the gates for the evolution of the mammals which soon became the dominant animals on the planet.

The Cretaceous-Paleogene mass extinction resulted in the extinction of large, land-dwelling dinosaurs. It led to the evolution of diverse species and left empty ecological niches to be filled in the future.

The Cretaceous-Paleogene mass extinction was caused by a cataclysmic impact of a large meteorite, or asteroid, off the coast of what is now the Yucatán Peninsula. This impact led to the extinction of nearly every single large, land-dwelling dinosaur. The extinction event resulted in diverse species of animals evolving and ecological niches being left empty but with the potential to be filled. However, meteorites striking the region that Mexico now occupies and clouds of dust and gas billowing into Earth's atmosphere were not direct results of this extinction event.

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The formula for speed is: v=x/t, where v is speed, x is distance, and t is time.

v=27/9

v=3

B) 3 m/s

Hope this helps!!

Final answer:

The dog's speed is calculated using the formula speed = distance/time, which gives us a speed of 3.0 m/s for the interval mentioned.

Explanation:

Speed is calculated as distance divided by time. In this case, the dog ran 27 meters in 9 seconds. Therefore, the speed is 27m / 9s = 3m/s.

To calculate the dog's speed for the interval during which it ran 27 meters in 9 seconds, we use the formula for speed which is speed = distance/time. In this case, the distance is 27 meters and the time is 9 seconds.

Speed = 27 meters / 9 seconds = 3 meters/second

Therefore, the dog’s speed for this interval of the game of fetch is 3.0 m/s, which corresponds to option B.

Answer:

B) mitosis and cell differentiation.

Explanation:

Embryonic development of a multicellular organism has several stages.

In principle, cell multiplication occurs through the mitosis process in which each cell produces two identical daughter cells, in this phase the number of cells that make up the embryo is gradually increased.

The next phase corresponds to the cell differentiation in which by means of modifications in the gene expression, the cells acquire the morphology and the functions of a specific cell type and different from the rest of cell types of the organism

Answer:Breaks down food molecules to release stored energy

Explanation:

Cellular respiration, which breaks down food molecules to release stored energy, occurs in all organisms, including plants, animals, fungi, and certain microorganisms; it does not need to take place before photosynthesis and is not limited to organisms that can't photosynthesize.

The correct answer to this question is: B. Breaks down food molecules to release stored energy.

Cellular respiration is an important process that occurs in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. It is not exclusive to animals as it is also performed by plants, fungi and many microorganisms.

Cellular respiration occurs independently of photosynthesis which is performed only by plants, certain algae, and some bacteria. The order of occurrence is not that respiration must take place before photosynthesis; both processes are concurrent. Also, while it's true that organisms incapable of photosynthesis, like animals, rely on cellular respiration, it's not accurate to say that only such organisms perform cellular respiration as plants do both.

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Answer:

Cell therapies would use stem cells, or cells grown from stem cells, to replace or rejuvenate damaged tissue. Scientists also want to use stem cells to understand disease and find drugs that might treat it. Embryonic stem cells could be used to make more specialized tissues that have been lost to disease and injury.

Researcher's preference for embryonic stem cells is attributed to their totipotency and capacity to differentiate into any cell type, which is key in medical research and therapy development. Cloning techniques can create tissue matches to avoid transplant rejection. Nevertheless, ethical issues arise from the destruction of embryos in the process.

Researchers prefer to use embryonic stem cells in medical research due to their unique characteristics. These stem cells are totipotent, which means they have the potential to develop into any type of cell in the body, leading to significant medical applications such as the study of human embryonic development and the creation of therapies for replacing damaged tissue. Cloning techniques that employ embryonic stem cells may also enable the growth of tissue matching the donor DNA exactly, eliminating issues of tissue rejection in transplants.

Moreover, they can be grown in culture, allowing researchers to harvest and amplify these cells. Significant progress has been made in the field; for example, scientists like Freda Miller and Elaine Fuchs discovered stem cells in skin that assist in its repair, potentially aiding treatments for skin diseases and nerve damage. However, this field is accompanied by ethical concerns due to the destruction of embryos during cell harvesting, leading to moral, religious, and philosophical objections.

Answer:

It is measured in Joule

Explanation:

Energy Units and Conversions. 1 Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power from a current of 1 Ampere flowing through 1 Volt. 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour.

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Why are the seminal vesicles important for human reproduction?

This might help:

The seminal vesicles (Latin: glandulae vesiculosae), vesicular glands, or seminal glands, are a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals. Seminal vesicles are located within the pelvis. They secrete fluid that partly composes the semen.

They pass through the prostate, and open into the urethra at the seminal colliculus. During ejaculation, semen passes through the prostate gland, enters the urethra and exits the body via the urinary meatus.

I believe that the answer is:

A. 

They allow the sperm to travel to the urethra to be released.

Answer:

Photosynthesis takes place in chloroplasts; cell walls allow plants to have strong, upright structures; and vacuoles help regulate how cells handle water and storage of other molecules.

Final answer:

Chloroplasts, with their chlorophyll and other pigments arranged in an antenna complex, are the main structures that facilitate photosynthesis in plant cells. The process also involves the stomata for gas exchange and the mesophyll layer which houses the chloroplasts.

Explanation:

The structures inside plant cells that help with photosynthesis are called chloroplasts. These chloroplasts contain chlorophyll, the pigment responsible for the green color of plants, and are the sites where photosynthesis occurs. Chloroplasts consist of a double membrane enclosing an inner fluid called the stroma, which contains coin-like thylakoids stacked in grana. The thylakoids have a specialized membrane that embeds the chlorophyll and accessory pigments, organized in an antenna complex that captures solar energy and transfers it to a reaction center. Additionally, the process of photosynthesis in leaves involves cellular structures such as stomata regulated by guard cells for gas exchange, and the mesophyll layer where the chloroplasts are largely located.

C. Incomplete Dominance

Incomplete dominance

Answer:

Top two images are animal-like and bottom two images are plant-like

Explanation:

Paramecium and Amoeba are animal-like protists. They are unicellular eukaryotes.

Diatoms and brown seaweed are plant-like protists. They are producers of the  aquatic ecosystem.  

Answer:

Top left animal

Top right animal

Bottom left plant

Bottom right plant

Explanation: