There are many interconnections between the arterial branches of the coronary circulation, which function to maintain a constant blood supply to the muscle of the heart. These connections are called ________.

Answer:

C. Two species cannot occupy the same niche in the same habitat.

Explanation:

just took the quiz

Answer:

C

Explanation:

I did it on edge 2020

Answer:

negative feed back

Explanation:

it gives sweat and causes bad acne

Answer:

"Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements."

Answer:

Explanation:

This includes a decrease in the rate of maximal expiratory air flow (a decrease in FEV1 and the FEV1/FVC ratio) due to the increased resistance, and a reduction in forced vital capacity (FVC) correlating with the level of hyperinflation of the lungs.

Answer: A Period of Genetic Integration

Explanation:

There are two cycles of a viral infection. The lytic and lysogenic cycle. The lytic cycle is when the virus has the cell replicate more of the virus and then destroys the cell to release the viral particles.

The second cycle, the lysogenic cycle, is when the virus integrates its genetic information into the cell's genome and remains dormant. As the cell replicates the viral genetic info is replicated as well. The gene for the virus in the host cell genome is reffered to as a "prophage". Eventually, under the right conditions, the gene for the virus could be expressed and lead to the lytic cycle.

The phenomenon of observing many mushrooms growing in a circle is known as a fairy ring or elf circle.

The number of mushrooms growing in the elf circle depends on the species of the mushroom.

Fairy rings, often referred to as elf rings or pixie rings, are circles composed of mushrooms that appear in nature.

Some mushrooms are small, while others can reach a diameter of 600 meters as they emerge from the earth in a circular pattern. One of the most wonderful places in the woods are fairy rings.

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Answer:

brainstem

Explanation:

The medulla oblongata in the brainstem is the region of the brain that controls primitive functions of the body.

The brain stem is located under the cerebrum in front of the cerebellum. It is made up of the pons, midbrain, and medulla oblongata. It connects the spinal cord to the brain for regulating primitive functions.

All the primitive functions are performed by the medulla oblongata of the brain stem including coughing.

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Answer:

Today, astronauts eat a varied diet that is similar to what we eat on Earth. The menu aboard the International Space Station (ISS) includes more than a hundred items - from vegetables and fruit to pre-prepared meals and desserts. Even condiments such as ketchup and mustard are available.

Explanation:

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Answer:

HERE

Explanation:

One resource used for energy production that can impact the natural resource of ozone layer depletion is coal. Burning coal releases pollutants like sulfur dioxide, nitrogen oxides, and mercury into the atmosphere, which can contribute to the formation of smog and acid rain. These pollutants can also react with other chemicals in the atmosphere to break down ozone molecules, contributing to the depletion of the ozone layer. So, the way humans use coal as an energy resource can have a negative impact on the ozone layer and the environment.

Pretty sure it's D because A and C wouldn't help the corn survive. I don't think B would make sense either.

The ability to grow in a large number of climates, soil types, and produced the largest amount of kernels since these traits would have been the most favorable for food production. Therefore, option (D) is correct.

Selective breeding is the process of intentionally choosing and mating organisms with desirable traits in order to produce offspring with similar or improved traits.

This process has been used by humans for thousands of years to improve the quality and productivity of domesticated animals and plants. Selective breeding involves identifying desirable traits such as increased yield, resistance to disease or pests, and improved growth or reproduction, and then selectively mating organisms that exhibit these traits.

Over time, this can lead to the development of new varieties or breeds with the desired characteristics. While selective breeding can lead to significant improvements in agricultural productivity, it can also raise concerns related to genetic diversity and potential negative impacts on animal welfare.

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Answer:

Allopatry may start the process off, but the evolution of internal barriers to gene flow is necessary for specialization to be complete. Specialization requires that the two incipient species be unable to produce viable offspring together or that they avoid mating with members of the other group.

Explanation:

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Answer:

The answer is A.

Explanation:

The lac repressor protein can prevent or let the transcription and production of the operan. When there is lactose not present in the body, the lac repressor protein prevents the production of the operan by RNA polymerase but when lactose is present, it let's the operan to get produced . So the answer is yes, the presence of the lactose molecule controls whether the operon is on or off.

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By assuming that a young-looking teenager who appeared to be driving recklessly was one of those defiant, careless and irresponsible teenagers who don't deserve a license, Danica just made an internal or dispositional attribution.

Internal or dispositional attribution occurs when an individual makes judgments about the actions of an individual or of himself based on psychological causes, such as Danica who attributed characteristics to the teenager in relation to the way she was driving.

Therefore, the internal attribution is one whose dispositional explanations are emphasized to justify an action based on the individual's personality.

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Fragmentation is a form of asexual reproduction and is seen in annelids, fungi, cyanobacteria, sponges, and flatworms.

In Fragmentation, an organism divides itself into a number of fragments. It occurs when an organism completely breaks down independently irrespective of the other parts. Each one of these fragments matures into fully grown adults that are clones of the original organism.

Asexual reproduction usually involves the participation of a single parent alone can produce new offspring. The newly produced individual is genetically identical to one another and its parent. Both multicellular and unicellular organisms divide by fragmentation which is asexual reproduction.

Fragmentation is the most common method of reproduction in lower invertebrates. It is seen in many organisms including filamentous cyanobacteria, algae, lichens, molds, many plants, and animals such as flatworms,  annelid worms, sponges, and sea stars.

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The organisms that can reproduce by fragmentation are Option d Sponges and Sea anemones.

Fragmentation is a form of asexual reproduction in which an organism breaks into two or more fragments, and each fragment develops into a new individual. Both sponges and sea anemones are examples of organisms that exhibit this mode of reproduction.

Sponges are simple multicellular animals that lack true tissues and organs. They possess a porous body structure, and when a sponge is fragmented, each fragment has the potential to develop into a new sponge through regeneration. These fragments contain specialized cells called archaeocytes that can differentiate into various cell types required for the formation of a new sponge.

Sea anemones, on the other hand, are marine animals belonging to the phylum Cnidaria. They have a cylindrical body with tentacles surrounding their mouth. When a sea anemone is fragmented, each piece can regenerate into a complete individual. The process involves the differentiation of cells within the fragments, leading to the development of new tentacles, body parts, and eventually a mature sea anemone.

Both sponges and sea anemones have remarkable regenerative abilities, allowing them to reproduce through fragmentation. This form of asexual reproduction enables them to colonize new areas, expand their population, and adapt to changing environmental conditions. Therefore the correct option is D

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The Question was Incomplete, Find the full content below :

The organisms which can reproduce by fragmentation are:

(a) Corals and Sponges

(b) Corals and Spirogyra

(c) Sea anemone and Spirogyra

(d) Sponges and Sea anemones.

In a reproductive cell of a fish that was later fertilized to become an organism and the mutation occurred in a gene that coded for a pigment that normally appears blue and as a result of the mutation appears red, it would likely impact the appearance of the organism.

Specifically, the fish would no longer produce the blue pigment and instead would produce a red pigment. This could potentially impact the survival of the fish in its environment, as it may make it more visible to predators or less able to camouflage itself.

Additionally, if the blue pigment had a specific function, such as helping the fish to attract mates or communicate with other fish, the mutation could impact these behaviors as well. However, it's also possible that the mutation may not have any significant impact on the organism's survival or behavior, particularly if the pigment in question is not critical for these functions.

Ultimately, the impact of the mutation on the organism would depend on a variety of factors, including the specific gene that was mutated, the role of the pigment in the fish's ecology and behavior, and the broader environmental context in which the fish lives.

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Answer:

The Chicxulub meteor

Explanation:

The Mesozoic Era includes the Triassic, Jurassic, and Cretaceous Periods, which are pretty synonymous in Paleontology and pop culture (due to a certain film you've probably seen). The final period, the Cretaceous Period, culminated with the impact of the Chicxulub meteor in Mexico and ended the Mesozoic Era.

Answer:

Umami.

Explanation:

Umami is the flavor which the cat like the most. This Umami flavor is present in the fish, shellfish, cured meats, meat extracts, mushrooms, vegetables. We know that fish is the most favourite food of cat and the main reason for this is the presence of Umami in the fish. So due to Umami flavor, the fish food is eaten by the cat with more enjoyment as compared to other foods so the person have to provide fish food to the cat for their good health.

Answer:

cause sunlight is the basic source of energy which is used in our daily life

Explanation:

sunlight is the main source of energy for the earth. without sum nothing is possible . sunlight is relatable in every systematic flow. like wise in photosynthesis, life cyle,drying food or fruits ,etc. moreover!

Answer:

a. protects the environment.

Explanation:

Using water efficiently means using it wisely and not wasting it. When we use water more efficiently, we reduce the amount of water we consume, which helps to conserve water resources. This is important because water is a limited resource, and by using it efficiently, we can ensure enough water is available for future generations.

By using water more efficiently, we can also protect the environment. Water is essential for many ecosystems and habitats, and by conserving water, we can help maintain the balance of these ecosystems. Additionally, using water efficiently can reduce the need for energy-intensive water treatment and distribution processes, which can help reduce greenhouse gas emissions and mitigate climate change.

So, using water more efficiently helps protect the environment but also helps conserve water resources for the future.

Answer and Explanation:

The brain is composed of three main structures, the cerebrum, cerebellum, and brain stem. The brain sends chemical and electrical signals throughout the body to regulate different biological functions and sense environmental changes. The brain communicates with the majority of the body through the spinal cord.

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

Answer:

1. The universe's galaxies have evolved since what point in time?

2. Which proportion of the universe's galaxies can be seen from Earth?

3. Which was used to create the first image of a black hole?

4. Which of these describes a nebula?

5. Why are most stars not destroyed in a galaxy collision?

6. What do supernova remnant and planetary nebulae have in common? Select the three correct answers.

7. Which of the following is an accurate description of cosmic microwave background (CMB) radiation? Select the two correct answers.

8. Select the correct answers from the list.

The model of galaxy formation in which sections of gas clouds collapse into small pieces which repeatedly combine into larger pieces under the influence of gravity is called the ____ model or the ____ model.

9. Drag and drop the words into the correct locations. Answers may be used once, more than once, or not at all.

Galaxies can be grouped by the age of the stars they tend to contain, with ____ galaxies having the youngest stars and ____ galaxies having the oldest stars.

10. Which event triggers the start of black hole formation?

Explanation:

1. 13.8 billion years ago, right after the universe first formed

2. far less than 1 percent

3. radio waves from matter at the edge of the black hole

4. cloud of gas and dust

5. Galaxies are mostly empty space.

6. They emit non-visible radiation.

They are composed of matter from dying stars.

They contribute matter to interstellar space.

7. CMB is uniformly distributed and of a uniform temperature across the universe.

CMB is remnant radiation from the Big Bang.

8. inside-out / bottom-up

9. irregular / elliptical

10. A massive star depletes its stores of hydrogen and helium

Answer:

B. all offspring exibit a mixture of the two allele

Explanation:

Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.

Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.

Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.

Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.

The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.

Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.

This shows that Carlton has an impaired absolute threshold.

He could not detect the smallest quantity of a stimulus to differentiate between the smells.

Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.

This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.

Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.

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The correct option is B. shrink. As more solvent is added to the solution, it eventually becomes hypertonic. When cells are suspended in hypertonic solutions, they begin to shrink. Cells lose water to try to "dilute" the solvent concentration in its envinroment, in order to reach isotonic concentration.

Answer:

The correct answer is - D. all of the above.

Explanation:

Hydrophilic hormones are the hormones that can not pass through the cell membrane as they are poorly lipid-soluble and cannot pass through cell membranes and bind the receptors present on the surface of the membrane.  

Insulin and glucagon are peptide hormones that bind to a receptor in the target cell's membrane surface. Norepinephrine and epinephrine are catecholamines that are hydrophilic in nature.  Seratonin and Melatonin are also bound on the surface receptor due to their hydrophilic nature.