A scientist tries to mate the two similar-looking fruit flies Drosophila melanogaster and Drosophila simulans. But he finds that they are unable to produce viable offspring. What kind of evolutionary barrier could this be?
The most productive soils contain A) pesticides. B) fresh water. C) a large supply of producers. D) decomposers to recycle organic matter.
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How are seeds different from spores?
Question 7 options:
Seeds have endosperm which provides nourishment for a new plant, but spores do not have any stored food supplies.
Spores involve egg and sperm cells, while seeds do not.
Spores will germinate and must find good soil to survive. Seeds can survive in extremely harsh conditions.
Spores have an endosperm and involve sperm and egg cells, while seeds do not.
What kind of scientific investigations do not involve observations
Only large environments can support different varieties of organisms.Do you agree?Explain ur answer.
Final answer:
No, it is not true that only large environments can support different varieties of organisms. Both large and small environments can be rich in biodiversity, and diversity of species is crucial for adaptation and survival in changing environments. Larger protected areas do generally support more ecosystems and larger populations.
Explanation:
The idea that only large environments can support different varieties of organisms is not entirely accurate. Different species are well-adapted to live in a variety of environments, both large and small. A small environment can still be rich in biodiversity, particularly if it provides a unique habitat or if the organisms within it have specialized adaptations allowing them to coexist. However, it is often true that larger protected areas can support a greater variety of ecosystems and larger wildlife populations, offering more opportunities for species to thrive.
It's a misconception that larger animals are more evolved than smaller ones like bacteria. Evolution is about the fit between an organism and its environment, not about size. Smaller animals often require less food and resources, which is why an environment may support a greater number of smaller species than larger ones. For example, numerous small insect species can coexist in a single small habitat because of their minimal resource needs.
Diversity of species increases the chance that at least some organisms will adapt and survive any major changes in the environment. This explains why there are so many different types of organisms. The current risks to biodiversity, which resemble a mass extinction, are critical reminders of the need to protect varying sizes and types of habitats to sustain biodiversity.
what way does the Earth's atmosphere interact with the geosphere
The Earth's atmosphere interacts with the geosphere through weathering and erosion processes.
Weathering breaks down rocks and minerals near Earth's surface. Oxygen, carbon dioxide, and water vapour chemically react with rocks, disintegrating and altering them. Atmospheric factors affect physical weathering such freeze-thaw cycles and wind abrasion.
Wind, water, and ice carry weathered debris. Erosion depends on atmosphere. Dunes are formed by wind erosion of loose soil particles. Rivers, valleys, and canyons form from precipitation and runoff. Ice sheets and glaciers scratch the Earth's surface, altering it.
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Name two structural and two functional properties of proteins
What two substances are indicated by the cobalt chloride and the lime water tests? is it possible that other substances are produced when the candle burns?
The idea that younger rock layers are deposited on top of older rock layers in an undisturbed section of sedimentary rock can best be explained by which of Steno's principles?
A. principle of superpositionAnswer:
Option (A)
Explanation:
The law of Superposition was introduced by Nicolas Steno in the 17th century. According to this law, in an undisturbed sedimentary rock layers or sequence, the rocks that are found at its base are the oldest rocks and the rocks that are found at the apex indicates the youngest rocks.
In nature, all sedimentary sequences do not satisfy this principle, because sometimes, some sedimentary sequences are affected by several factors such as the plate tectonic activity, earthquake, and faulting.
The Steno's principles were a huge contribution to the field of geology.
Thus, the correct answer is option (A).
While students are studying a rock outcrop along the highway they discover a sedimentary rock layer that contains fish fossils what best explains why these fossils are there
how are simple sugars used for energy compared to more complex sugars like starch in pasta?
The third stage of cellular respiration is the Krebs cycle the electron transport chain fermentation glycolysis
Answer:
I'm pretty sure glycolysis.
Explanation:
Runners sprinting short distances in a relay race and handing off a baton is an analogy that represents the way in which the neural signal jumps between the _____, or the breaks in the myelin sheath.
Runners sprinting short distances in a relay race and handing off a baton is an analogy that represents the way in which the neural signal jumps between the prions or the breaks in the myelin sheath.
What is wellness?The term wellness is defined as the characteristic or quality of being in good and fine health, mental, and social well being. Wellness is basically being in best physical and mental as well as social health.
There are several types of wellness such as spiritual wellness in which people feel to sacrifice for the nation, and for others. Emotional wellness is the type of wellness that implies to awareing and accepting one' reaction.
Physical wellness is the type of wellness in which you are physically fit and healthy and free from diseases.The term wellness is defined as the characteristic or quality of being in good and fine health, mental, and social well being. Emotional wellness is the type of wellness that implies to awareing and accepting one' reaction.
Therefore,Runners sprinting short distances in a relay race and handing off a baton is an analogy that represents the way in which the neural signal jumps between the prions or the breaks in the myelin sheath.
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(Science question)
A magazine advertises a protein shake that claims it can help you gain muscle. The fine print at the bottom of the screen says “results are not typical.”
Why is this claim considered pseudoscience?
Pictures should be included in their results.
The information was delivered in a magazine.
The shake contents were not listed in the advertisement.
The results do not support the claims conclusion.
This claim is considered pseudoscience, as the result do not support the conclusion of the claim. The correct option is D.
What is an advertisement?Advertisement is the promotion or acknowledgment of any product or service. It is done by electronic media or paper media. It promotes the products so that people could know about them and use them.
The advertisement is about a protein shake, but the proper scientific results are not mentioned to get proof.
Thus, the correct option is D. The results do not support the conclusion of the claim.
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Which Of These Body Systems Is Made Up Of The Tissues And Organs Responsible For Collecting Fluid That Leaks From The Blood And Returning It TO The Blood
A. Excretory system
B. Cardiovascular system
C. Endocrine system
D. Lymphatic system
The lymphatic system is responsible for collecting fluid from tissues and returning it to the bloodstream, and it plays a vital role in the immune system. It includes lymph nodes and organs like the spleen and thymus that help filter and produce cells for immune defense. Option D is correct .
The body system responsible for collecting fluid that leaks from the blood and returning it to the blood is the lymphatic system [ option D is correct ] . This system includes a network of lymph vessels and ducts that transport lymph, a fluid containing white blood cells, proteins, and sometimes bacteria and viruses, from the tissues back into the bloodstream.
The lymphatic system also comprises lymph nodes and other organs like the spleen and the thymus, which are crucial in filtering pathogens and producing lymphocytes to fight infections.
An important function of the lymphatic system is to maintain fluid balance in the body by returning the fluid to the blood. This system plays a vital role in our immune system by defending the body against foreign organisms. In contrast, the cardiovascular system, often linked with the lymphatic system under the umbrella term circulatory system, is primarily responsible for transporting oxygen, nutrients, and waste products throughout the body.
An archived questions was, "One serving of a particular food contains 16g of carbohydrates, 2g of protein, and 10 g of fats. Approximately how many calories does it contain?" The archived answer was 300 calories.
How did you get this answer? Shouldn't it be 162?
(9 cal * 10g fat) + (4 cal * 16g carb) + (4cal * 2g protein)
Before the calvin cycle begins, where is the energy stored?
The energy is stored in the ATP and NADPH molecules
Before the Calvin cycle begins, the energy is stored in the bonds of ATP and NADPH molecules
Calvin cycle is a process in which plants and algae turn carbon dioxide from the air into sugar.
Plants depend on the Calvin cycle for energy and food. Calvin cycle takes place in the stroma (in chloroplasts). The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase.
Before the Calvin cycle begins, the energy is stored in the bonds of ATP and NADPH molecules
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The question is: What is the relative age of layer 3? (Hint: With what absolute ages can you compare it?)
Layer 3 is younger than layer 2 but older than layer 4, with an estimated age of 40 million years.
Based on the principle of superposition, layers of sedimentary rock that are lower down are older than those above them. This means that layer 1 is the oldest layer in the image, and layer 4 is the youngest.
Therefore, layer 3 is younger than layer 2 and older than layer 4. The text in the image further clarifies that layer 3 is 40 million years old.
In which situation will the reaction rate INCREASE? A) when a catalyst is added B) when the temperature drops C) when the pressure is lowered D) when the molecules are large and bulky
which event occurs in the fluid portion of the cytoplasm of a cell undergoing glucose metabolism
Describe how proteins are made, packaged, and transported within the cell
Please answer like a 7th Grader
which of the following is used to calculate a streams discharge?
A. the distance its water travels over time.
B. the volume of water that flows over time
C. the amount of sediment it carries over time
D. the amount of dislocated minerals it carries over time
Final answer:
Stream discharge is calculated using the volume of water that flows over time, represented by the formula Q = A * v, where Q is the discharge, A is the cross-sectional area, and v is the average velocity. Option B
Explanation:
The correct answer to what is used to calculate a stream's discharge is B. the volume of water that flows over time. Discharge is a term used in hydrology to describe the volume of water that moves through a river channel over a period of time. The formula to calculate river discharge is Q = A * v, where Q is the discharge, A is the cross-sectional area of the river, and v is the magnitude of the average velocity of the water flow.
Understanding the concept of discharge is crucial since it affects both the flow rate and the velocity of a river. Higher discharge rates can lead to more erosion, sediment transport, and can dictate the shape a river or stream takes as it moves towards larger bodies of water. option B
How many millimeters of water would be displaced by 48 g of lead
Hideki has had difficulty sleeping. his doctor wishes to examine his sleep patterns to determine the cause of hideki's sleep problems. the doctor will most like perform a(n)
Explain how to find the magnification of a microscope
Unlike animals, fungi
Unlike animals, fungi have a cell wall, which is made up of chitin, and they are non-motile.
What is a cell wall?A cell wall is an external structural layer that surrounds some types of cells. It may be hard, flexible, or occasionally rigid. It serves as a filtration system as well as structural support and protection for the cell.
Most plant cells, bacteria, algae, fungi, and certain archaea have cell walls. It is discovered that the cylindrical shape of the cell wall is resistant to high concentrations of both peptide and glycan flaws using an elastic model.
The cytoplasmic Golgi apparatus produces tiny vesicles that are the source of the cell wall. Consequently, the cell wall is a secretory byproduct of the cytoplasm of a plant cell. An animal cell does not have cell wall, while a cell wall is present in fungi.
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Suggest two ways that reflex reactions help maintain homoeostasis in the human body.
The two ways by which reflex reactions helps in the maintenance of homeostasis in the human body is by maintaining the breathing and by recognition of discomfort.
Homeostasis is a process which involves the state of internal and chemical conditions maintained by living systems.
Further Explanation:
The automatic, subconscious responses are called reflex reaction that changes within the body. There are two ways by which reflex actions helps in the maintenance of homeostasis in the human body are,
By the maintenance of breathing: By maintaining breathing is also serves as a reflex reaction for maintenance of homeostasis in the human body. The respiratory system is composed of lung, bronchi and further subdivision that are involved in the gaseous exchange. The alveoli is the tiny sac present in the lung which helped in the gases exchange In this process, alveoli diffuse oxygen into the blood and resorp carbon dioxide from the blood. By the recognition of discomfort level: In this process, the reflex action passes the message to the CNS that body movement causes discomfort and CNS analyse the message and convey it back to its actual site. When the person touches any hot object, the sensory nerves cells present in hands receive the signal and transfer it to the brain where brain analyse it and send the response through motor neuron to remove the hand.
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Learn more about meiosis https://brainly.com/question/1600165Learn more about the process of molecular diffusion in a cell https://brainly.com/question/1600165Learn more about human sperm and egg cell https://brainly.com/question/1626319Answer Details:
Grade: High School
Subject: Biology
Chapter: Control and Coordination
Keywords:
Breathing, discomfort, alveoli, reflex action, gaseous exchange, oxygen, carbon dioxide, homeostasis, sensory neuron, motor neuron.
The powerhouse of the cell is a term referring to which of these structures?
some students are observing the behavior of a male bird in the schoolyard. which of the following observed behaviors might behaviors might increase the probability of reproductive success?
The behavior that will increase the probability of reproductive success is
( A ) Made a chirping sound
Reproductive technique for a male birdWhen a male is calling for a female bird it makes a special sound ( chirping sound ) to attract its mate within the vicinity and that way the probability of a reproductive success will increase.
while other kinds of behaviors as listed in question cannot attract a mating partner and will lead to the decrease in the probability of reproductive success for the male bird.
Hence we can conclude that the behavior that will increase the probability of reproductive success is : ( A ) Made a chirping sound.
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The probability of reproductive success A. Made a chirping sound. Therefore, A. Made a chirping sound is correct .
Communication and Courtship: Chirping sounds in birds often play a crucial role in communication, particularly during courtship.
Male birds may use distinctive calls or songs to attract potential mates.
The ability to produce specific sounds can be a way for the bird to signal its presence, health, and genetic fitness to females.
Mate Attraction: Chirping is a common behavior associated with mate attraction in many bird species.
The male's ability to produce a distinctive and appealing chirping sound may attract female birds, increasing the likelihood of forming a pair bond and engaging in reproductive activities.
Territorial Assertion: Chirping can also serve as a means of territorial assertion.
By vocalizing its presence, the male bird may be signaling its ownership of a particular territory, which can be attractive to potential mates seeking a suitable breeding area.
Demonstration of Fitness: The quality and complexity of the chirping sound may convey information about the male bird's physical condition and genetic fitness.
Females may be more inclined to choose mates that demonstrate strong and desirable traits through their vocalizations.
While making a chirping sound alone may not guarantee reproductive success, it is a behavior often associated with mate attraction and courtship in birds.
The ability to effectively communicate through sounds is an essential aspect of reproductive strategies in many avian species.
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Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation.
Scientists believe that the Abert's and Kaibab squirrels are examples of speciation because it is believed they were separated by plateau erosion that separated the forests and isolated the Kaibab population. This event caused speciation because the squirrels underwent geographic isolation.