Answer:
Grassland with few trees and shrubs/vegetation
Explanation:
which of the following statements about scientific theories are true? (A) theories cannot be tested (B) theories are the same as hypotheses. (C) theories can be used to predict the existence of as yet unobserved things or phenomena. (D) theories are ethical principles based on a religious foundation
C. im pretty sure thats what it is, the other answers sound weird and definitely wrong in my opinion
A region in China has steppes with very few trees. It receives a little more rain than arid desert climates receive. This region
also has contrasting seasons with cold and hot temperatures. It is home to many grazing animals, such as deer.
Which factors define this area as a semiarid climate? Check all that apply.
a)receives little rain
b)is located in China
c)has steppes with few trees
d)has grazing animals, such as deer
e)has hot and cold temperatures
Answer:
I would say A
Answer:
A. receives little rain, has steppes with few trees, has hot and cold temperatures
Explanation:
I did the quiz and got it right it is also on quizlet.
Which amino acid sequence corresponds with the polypeptide strand AUG CCG UAC GAG UAA? Do not include the start and stop codons.
A)
arginine serine glycine
B)
proline phenylalanine aspartic
C)
proline tyrosine glutamic acid
D)
arginine tyrosine glutamic acid
Answer:
THE ANSWER IS C i just did it on usa test prep
Explanation:
why would carbon 14 not be useful for dating something in the precambrian era?
Answer:
Not good for such old age
Explanation:
Carbon 14's half-life is about 5,700 years. So, it cannot be used to date something more recent than that. Also, due to the decay, it cannot be used on items older than about 50,000 years.
Then youngest a sample from the precambrian era could be is about 541,000,000 years (541 millions), so it's WAY past the range of use of Carbon 14, since there wouldn't be any carbon 14 left in the sample to evaluate the age through C14's half-life cycle.
Which best describes the main sources of energy in the United States?
A. Wind, nuclear,natural gas
B. Solar, wind, hydroelectric
C. Geothermal,biomass,solar
D. Coal,oil,natural gas
Answer:
D
Explanation:
Most of the energy in the United States comes from the burning of fossil fuels (coal, oil, natural gas). Hope this helps!
Answer:
D. Coal,oil,natural gas
Explanation:
The main sources of energy in USA are non renewable sources of energy like coal, oil and natural gas. Oil is the main source of energy in USA while coal stands second as a source of energy. Apart from these two, natural gas is also widely used in USA as an energy source. Non renewable sources of energy are also known as conventional sources of energy. Alternate sources of energy which are also known as renewable sources of energy like wind, solar hydroelectric, geothermal energy etc. are not used commonly as main sources of energy in USA.
When you are sick, your lymph nodes swell with extra erythrocytes. True False
How does aging affect the nervous system?
Answer:neurons die at an increased rate
Explanation:
Did in Health science
While aging brings these changes to the nervous system, it's important to note that the extent and rate of these changes can vary among individuals. Staying mentally and physically active, maintaining a healthy lifestyle, and managing underlying health conditions .
Neuronal Loss: With age, there is a gradual loss of neurons (brain cells), particularly in regions like the hippocampus and prefrontal cortex, which are important for memory and cognitive functions. This neuronal loss can contribute to cognitive decline.
Slower Processing: Aging often leads to a reduction in the speed of information processing, which can result in slower reaction times and difficulty with tasks that require quick thinking and decision-making.
Reduced Neurotransmitter Levels: There is a decline in the levels of certain neurotransmitters, such as dopamine and serotonin, which can affect mood, motivation, and emotional regulation. This can be associated with an increased risk of mood disorders like depression.
Changes in Brain Structure: The brain undergoes structural changes with age, including shrinking in volume and changes in the distribution of white and gray matter. These structural changes can impact cognitive function and memory.
Decreased Plasticity: Neuroplasticity, the brain's ability to adapt and learn, decreases with age. This can make it more challenging to acquire new skills or adapt to new situations.
Impaired Sensory Functions: Aging often leads to diminished sensory functions, such as reduced vision and hearing, which can impact perception and communication.
Increased Risk of Neurological Conditions: The risk of neurological conditions like Alzheimer's disease and Parkinson's disease increases with age. These conditions can have profound effects on cognitive and motor functions.
Decline in Motor Function: The nervous system's control over motor functions can be affected by aging, resulting in decreased coordination and balance.
Vascular Changes: Aging can lead to changes in blood vessels, including reduced blood flow to the brain. This can contribute to cognitive impairment and an increased risk of strokes.
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Over the past two hundred years, cities around the world have grown. The rapid population increase and industrialization of urban areas have, in turn, had a great impact on the local environments.
Urban governments have been concerned with all BUT one of the following environmental problems. That is
A) contaminated run-off.
B) reduced precipitation.
C) insufficient garbage collection.
D) air pollution from factories and vehicles.
The answer is B: reduced precipitation
Answer:
The answer is B. reduced precipitation
Explanation:
Urban governments have been concerned with all of the listed environmental problems except reduced precipitation. At this time, drought is a world-wide concern.
How are the tests and ovaries similar
Answer:
A. both stores mature sex cells.
Answer:
D.both produce sex cells. is a correct answer.
Explanation:
Testes and ovaries are similar because they both produce sex cells and both are reproductive organs.
Testes is a male reproductive organ.
Testes function is to produce sperm, called a male reproductive sex cell.
ovaries is a female reproductive organ.
ovariesOvaries function is to produce ovum, called a female reproductive sex cell.
Thus both testes and ovaries are similar as they both produce sex cells.
In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells _____.
A)are better at destroying the malaria parasite
B)carry toxic levels of oxygen through the body
C)cannot carry normal levels of oxygen to cells
D)attract larger numbers of the malaria parasite
Answer:
C. cannot carry normal levels of oxygen to the cells
Sickled red blood cells, characteristic of sickle-cell disease, cannot carry normal levels of oxygen to other cells in the body due to their abnormal shape causing them to get stuck in small blood vessels.
Explanation:In sickle-cell disease, the mutation in the hemoglobin gene changes the shape of red blood cells. These cells are no longer round but sickle-shaped, hence the disease name. The right answer to your question is option C: sickled cells cannot carry normal levels of oxygen to cells.
This is because the abnormal shape of these red blood cells makes them rigid and sticky, which can cause them to get stuck in small blood vessels and block blood flow and oxygen to parts of the body. As a result, they can't deliver the usual amount of oxygen which other body cells need to function properly.
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Please help ASP! Look at the picture above!
Answer:
A
Explanation:
It kinda tells you in the question by talking about salt in water.
A saltwater fish controls the concentration of salt in its body by actively excreting salt across its gills, drinking, and producing very small amounts of concentrated urine. Hence the correct option is b.
A saltwater fish is classified as an osmoregulator because it actively regulates the concentration of salt in its body to maintain internal balance in a saltwater environment. The fish achieves this by excreting excess salt through specialized cells in its gills, actively drinking water to compensate for osmotic water loss, and producing minimal, highly concentrated urine to conserve water.
In a saltwater environment, where the external concentration of salts is higher than that inside the fish's body, it faces the challenge of preventing dehydration due to water loss and maintaining a suitable internal salt balance. The osmoregulatory mechanisms employed by saltwater fish are crucial for their survival and adaptation to their specific aquatic habitats. Hence the correct option is b.
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What is the function of heart valves?
Answer:
They ensure blood flows in one direction throughout the heart
Explanation:
The heart has 4 valves namely;
The mitral and tricuspid valves which control the flow of blood from the atria to the ventriclesThe pulmonary and aortic valves which control the flow of blood out of the ventricles.When blood passes through the valve, the valve prevents the back flow of the blood as the muscles of the heart contracts and relaxes.
Answer:
I believe it is
They prevent blood from flowing backwards
Explain how the abiotic components in each area determined what type of plants and animals lived there.
Answer:
Abiotic components of an ecosystem are water, air, light, soil, and temperature.
Now think about how the availability of these things will affect what could live in a specific area.
Consider a desert ecosystem. Deserts are arid, receiving little rain (water) and have extreme temperatures (both cold and hot). Because of these conditions only certain plants and animals can live here. These plants and animals have adaptations that are specific to the environment. If you were to put an organism that does not belong in there, they would most likely die out.
Tidbit for you. The Atacama desert is one of the driest places in the world, located specifically in Chile. At one point, this place did not receive any rain for 500 years! Still plants and animals are able to live in this area. When it finally did rain, the sudden downpour caused a radical change in this ecosystem. You would think at first rain would be good, but no. Because the changes the rain brought was too drastic, it caused a devastating effect on the organisms that lived there because they were not adapted to rain.
under what conditions will a substance be likely to enter a cell through diffusion
Answer:
Under hypotonic conditions.
Explanation:
If the extracellular fluid has lower osmolarity than the fluid inside the cell, it’s said to be hypotonic—hypo means less than—to the cell, and the net flow of water will be into the cell.
A substance can enter a cell through diffusion if there is a concentration gradient, the substance can pass through the cell membrane, and if necessary, specific protein channels are available in the cell membrane. Diffusion is a passive form of transport that does not require energy from the cell. External conditions like solvent density and system temperature can also affect the rate of diffusion.
Explanation:
A substance is likely to enter a cell through diffusion under certain conditions, including the existence of a concentration gradient, the ability of the substance to pass through the cell membrane, and the presence of specific protein channels in the membrane. Diffusion moves a substance from an area of higher concentration to an area of lower concentration until the concentration is equal across the space. This is a form of passive transport, meaning it doesn't require any energy from the cell.
For example, in an organism, gases, lipids, and water pass through the cell membrane easily, often using protein channels known as aquaporins for water. But polar molecules like glucose, amino acids, and ions may not easily pass through. These molecules often rely on facilitated transport, moving down a concentration gradient through set protein channels in the membrane, which does not require energy.
Other factors can also affect the rate of diffusion, including solvent density and system temperature. A denser medium or lower temperatures can slow the rate of diffusion, while a less dense medium or higher temperatures speed it up. So, the conditions in which the cell exists also play an integral role in whether a substance can enter a cell through diffusion.
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Conservation methods are needed worldwide for many reasons. All but one is a reason to support conservation.
A) global population growth
B) global capacity to provide sufficient food
C) geographical mismatch between food demand and supply
D) undiscovered lands will provide plenty of natural resources
Undiscovered lands will provide plenty natural resources
Answer:
D) undiscovered lands will provide plenty of natural resources
Explanation:
Before the end of the Second World War, there were no studies published in a massive way in order to point out the need to conserve nature for new and future generations. This represented a paradigm of the economy that observed ecology in a profound way, with higher values to human beings than to forests. At the time, the concept of the main economy consisted of the fact that natural resources are not scarce, starting from this concept began to establish conservation methods to preserve mineral resources.
Conservation methods are needed worldwide for several reasons. The factors that highlight the need to support these conservation methods are:
global population growth global capacity to provide sufficient food geographical mismatch between food demand and supplyA geologist concludes that a rock sample is an extrusive igneous rock. Based on this information, which statement about the rock is accurate?
A. The rock formed from cooling lava. B. The rock cooled slowly over millions of years. C. The rock likely came from a pluton. D. The rock formed within Earth's crust.
A. The rock formed from cooling lava
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Answer:
the accurate answer to this question is the rock is forming by lava
hope this helps
Explanation:
Which is an example of a local wind? a windchill a jet stream a trade wind a sea breeze
A sea breeze is an example of a local wind.
What is sea breeze?A sea breeze is a local wind that occurs near coastal regions where there is a significant temperature difference between the land and the sea.
During the day, the land heats up faster than the sea, causing the air above the land to rise and the air above the sea to move towards the land. This movement of air from the sea to the land is known as a sea breeze.
Sea breezes usually occur during the daytime when the sun heats up the land, and the temperature over the land rises faster than the temperature over the sea. In contrast, at night, the land cools down faster than the sea, and the air above the sea moves towards the land, creating a land breeze.
Sea breezes are essential for coastal ecosystems and climates, as they help regulate temperatures and provide a source of moisture for vegetation. They can also affect human activities such as fishing, sailing, and coastal tourism.
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A sea breeze is an example of a local wind, distinguished for being a wind pattern that affects a limited area and arises from temperature and pressure differences between land and sea.
An example of a local wind is a sea breeze. Local winds like this are caused by the differential heating and cooling of land and water surfaces, leading to pressure differences and the resulting movement of air. The sea breeze is a local wind that blows from the sea towards the land during the night, when the air over the water is warmer than the air over land. This is in contrast with global winds such as the jet stream or trade winds, which cover much larger areas and are influenced by the Earth's rotation and the overall heating of the Earth's surface.
Which kingdoms include organisms with cell walls?
I. Archaebacteria
II. Fungi
III. Plantae
IV. Animalia
V. Protista
VI. Eubacteria
Answer:
Archaebacteria, Eubacteria, Plantae, Fungi, and Protista.
Explanation:
Eubacteria has cell walls with peptidoglycan. Archaebacteria has cells walls without peptidoglycan. Protista has cells walls of cellulose in some. Fungi has cell walls of chitin. Plantae has cell walls of cellulose.
The kingdoms include organisms with cell walls are Archaebacteria, Fungi, Plantae, Protista, Eubacteria.
What are the Fungi?
The cell wall is a feature shape of fungi and consists specially of glucans, chitin and glycoproteins. As the additives of the fungal cell wall aren't found in humans, this shape is a brilliant goal for antifungal therapy.
The five-kingdom organisms of type for dwelling organisms, inclusive of the prokaryotic Monera and the eukaryotic Protista, Fungi, Plantae and Animalia is complex through the invention of archaebacteria.
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A hiker is climbing up a steep path. Halfway up, he finds the muscles in his legs are experiencing a burning and aching sensation. What is the most likely cause of these symptoms?
Answer:
he has a large buildup of lactate in his muscles.
Explanation:
A hiker is climbing up a steep path. Halfway up, he finds the muscles in his legs are experiencing a burning and aching sensation. The reason could be lactic acid deposition.
What is lactic acid deposition ?The accumulation of lactic acid in the certain area where pyruvate is getting converted into lactate.
This is the form of anaerobic respiration where the absence of oxygen made the anaerobic processes accumulate the lactate in the muscles.
The process is taking place because of the absence of oxygen. Glucose instead of breaking down getting accumulated as lactate in muscles and this process is called as cramps in the normal language.
The sudden regression of such activities is absence of exercises at first but later on rapid exhaustion over the body parts and leading to the condition called lactic deposition in muscles in the form of lactate.
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Which of the following controls the activities of a cell? A. nucleus B. vacuole C. cytoplasm D. cell membrane
A. Nucleus controls the activities of a cell.
As the main command center where genetic material, or DNA, is kept, the nucleus regulates the functions of a cell. The instructions needed to synthesize proteins and control biological functions are encoded in DNA. The nucleus regulates the expression of genes, which affects growth, metabolism, and division, among other cellular processes.
Through the transcription and translation of genetic information into proteins, which perform the required functions within the cell, it synchronizes these actions. Therefore, the nucleus is essential to preserving the integrity and general function of the cell.
During respiration, what do consumers such as animals release?
water
oxygen
carbon dioxide
food
Answer:
Carbondioxide and water
Explanation:
During respiration food molecules are broken down to release energy. During this process oxygen is required and not formed but Carbondioxide and water is liberated as byproduct. So the closest answers are Carbondioxide and water
During respiration, consumers such as animals release the carbon dioxide gas into atmosphere. Thus, the correct option is C.
What is Respiration?Respiration can be defined as a metabolic process wherein, the different living cells of an organism can obtain energy in the form of ATP(Adenosine triphosphate) by taking in the oxygen gas and liberating carbon dioxide gas from the oxidation of complex organic substances into the atmosphere.
Carbon dioxide is the main gas or the by-product which is released back into the atmosphere during the respiration of consumers, which then breaks down to glucose molecule and other complex organic compounds and gets converted into the carbon back to carbon dioxide for reuse by the producers.
Therefore, the correct option is C.
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what is the backbone of the dna structure composed of?
Answer:
Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain. The chemical backbones of the double helix are made up of sugar and phosphate molecules that are connected by chemical bonds, known as sugar-phosphate backbones.
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What is one difference between the sternum and the femur
One difference between the sternum and the femur is that the sternum is a flat bone located in the chest, while the femur is a long bone located in the thigh.
What are differences between sternum and femur?The sternum, also known as the breastbone, is a long, flat bone located in the center of the chest. It is connected to the ribs and helps to protect the heart and lungs. The femur, on the other hand, is the largest and strongest bone in the body. It is located in the thigh and connects the hip to the knee. The femur is responsible for bearing the weight of the body and is crucial for movement and mobility.
Another difference is that the sternum is a flat bone and the femur is a long bone. Flat bones are typically thin and relatively flat and are found in the skull, sternum, and scapulae. Long bones are longer than they are wide and have a hollow shaft in the middle, which is filled with bone marrow. They are found in the legs, arms, and fingers.
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How do gymnosperms look different than angiosperms
The key difference between angiosperms and gymnosperms is how their seeds are developed. The seeds of angiosperms develop in the ovaries of flowers and are surrounded by a protective fruit. ... Gymnosperms seeds are usually formed in unisexual cones, known as strobili, and the plants lack fruits and flowers
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Which of the following adaptations in wooly mammoths would have best prevented their extinction?
A. Shedding of fur
B. Darker colour of fur
C. Growth of an extra layer of fur
D. Increase in thickness of fur
Answer:
I think it is D
Explanation:
Answer: A shedding of fur
Explanation:
In plants and animals, carbon cycles through molecular processes that store and release energy in various molecular forms. In these plant and animal molecular processes, carbon is found in
sugar molecules and oxygen molecules.
sugar molecules and water molecules.
carbon dioxide and sugar molecules.
carbon dioxide and oxygen molecules.
Answer:
carbon dioxide and sugar molecules.
Explanation:
The carbon is found in carbon dioxide whose composition is CO2 (one atom of carbon per two of oxygen) and in the sugar that is a primordial element, composed of carbon, oxygen and hydrogen.
Carbon is found in carbon dioxide and sugar molecules in both plants and animals.
Explanation:In the process of photosynthesis, plants convert carbon dioxide gas (CO₂) into sugar molecules such as glucose (C6H12O6), and release oxygen as a byproduct. On the other hand, during respiration, animals consume glucose and oxygen, producing carbon dioxide and water as waste products. Therefore, carbon is found in carbon dioxide and sugar molecules in both plants and animals.
Which best describes ideal growing conditions for fungi?
A. moist and warm
B. hot and dry
C. cool and damp
D. wet and cold
Answer:
A: most and warm
Explanation:
Answer:the answer would be moist and warm because the fungi would react with water and the right temperature would greatly help in growth
E
Atoms such as carbon nitrogen and oxygen in a newborns body are brand new? True or false?
Answer:
i would like to say true
Explanation:
Atoms cannot be brand new in any product or organism.
Answer: False
Explanation:
Atoms are structures that are basic for all molecules. According to the law of conservation of mass it is said that atoms can neither be created nor be destroyed but they are transferred from one form to another, thereby the atoms of any elements that form a new product would have already been derived from the same element in the reactant, they would just be rearranged or will attain a different structural arrangement in order to form a new product.
In past decades, the Grizzly Bears in Yellowstone National Park were hunted nearly to extinction. Some people just wanted a trophy to brag about, while others were trying to protect their livestock from the large carnivore. What is the most effective way to protect wildlife whose population numbers are becoming concerningly low?
Answer:
The first answer is most logical, since it is possible.
Explanation:
A dog gets into a fight with another dog and suffers bite wounds on its stomach and near its left front leg. Which terms would a veterinarian use to describe this injury?
A.
bite wounds on ventral and left, posterior areas
B.
bite wounds on dorsal and left, anterior areas
C.
bite wounds on ventral and left, anterior areas
D.
bite wounds on dorsal and left, posterior areas
E.
bite wounds on ventral and right, anterior areas
C. bite wound son ventral and left, anterior areas
Ventral = underside/stomach
Left = left side
Anterior = nearer the front
C. Bite wounds on ventral and left, anterior areas
Ventral would be the stomach, or in other words in the abdominal area.
Left would be the left side of the body.
Anterior would be the area located close to the head.
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