Heather has to solve this system of equations using elimination. what should be her first step?
People sometimes use certain chemicals to kill unwanted plants. These chemicals seep into the ground and damage the roots. Explain why damage to the roots could kill the plant.
Because a plant's roots are so important to its overall health and functionality, damage to them can be detrimental to the plant's ability to survive.
Plants are supported structurally, anchored in the ground, and have roots that draw water and nutrients from the soil around them. Additionally, they make it easier for water and nutrients to reach the rest of the plant. Dehydration, malnutrition and general physical stress result from chemicals that damage the roots' ability to absorb nutrients and water. Lack of sufficient water and nutrients disrupts the plant's metabolism, resulting in wilting, stunted growth, and eventually plant death.
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To which reptiles, living or extinct, are crocodiles and alligators most closely related?
Final answer:
Crocodiles and alligators, which are part of the Crocodilia order, are most closely related to birds. Both are the only known living descendants of dinosaurs, with birds being descendants of dinosaurs that developed wings. Crocodilia originated around 84 million years ago, and their terrestrial ancestors appeared at least 220 million years ago.
Explanation:
Crocodiles and alligators are part of an order of large reptiles known as Crocodilia, which also includes creatures like caimans and gharials. These reptiles are most closely related to birds, which may seem surprising, but both groups are the only known living descendants of the dinosaurs. The ancestors of birds were actually dinosaurs that evolved wings and took to the skies. Hence, crocodiles and alligators look like they might be small dinosaurs because they share a common ancestry with these ancient creatures.
The Crocodilia lineage arose about 84 million years ago during the late Cretaceous period. Crocodilians are found in a variety of habitats in the tropics, such as rivers, lakes, and sometimes saltwater environments. They show diverse behaviors, including providing parental care, which is depicted in one example as the Siamese crocodile (Figure 15.43a). These reptiles spend substantial time in the water but also have the capacity for semi-erect locomotion on land. Among modern reptile orders, turtles originated around 250 million years ago, while ancestral crocodilians evolved at least 220 million years ago.
What do the brackets around a chemical mean, like for [h + ]?
In chemistry, the brackets surrounding a chemical symbol or formula indicate the concentration of that substance.
Explanation:In chemistry, the brackets surrounding a chemical symbol or formula indicate the concentration of that substance. For example, [H+ ] represents the concentration of hydrogen ions in a solution.
What is a renewable source?
A neural ___ it, chemical messenger, travels across the synapses and binds to a neural
Which gastrointestinal secretion has a component that is required for the intestinal absorption of vitamin b12?
Large, rotating low-pressure storms that get their energy from the evaporation of warm water from tropical oceans are called
Answer:
Tropical cyclones.
Explanation:
Cuz I cheated on the test and fealt that I should help a brotha' out.
The movement of air pollutants via evaporation and winds from tropical and temperate areas to polar regions is referred to as ____.?
Air pollutants are the chemical and hazardous particles that contaminate the quality of the air and degrade it. The atmospheric air can get contaminated by human interference and many other reasons.
The grasshopper effect is the movement of air pollutants.
The grasshopper effect can be explained as:It is a geochemical process that carries and transports the chemicals and pollutants from warm towards the colder regions of mountains and poles.It is also called global distillation and is caused by the entrapment of the particles and pollutes that gets carried to the colder region by evaporation and winds.Therefore, the correct blank is the grasshopper effect.
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The basic difference between spermatogenesis and oogenesis is that ________. the basic difference between spermatogenesis and oogenesis is that ________. spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only the mature ovum is n, while the sperm is 2n during spermatogenesis two more polar bodies are produced in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell
Answer:
Mature ovum is being produced in oogenesis, while spermatogenesis has four mature sperms that contains enzymes due to that the sperm is able to penetrate an egg
Explanation:
Using the amino acid codon chart, what will happen to this protein sequence if the mutation shown occurs?
Original sequence mRNA: CAG GGA GCA UUA
Mutated sequence mRNA: CAG UGA GCA UUA
A)The seqence will stop at gln, because UGA is a stop codon. B)The sequence will change from gln-gly-ala-leu to gln-thr-ala-leu C)The sequence will remain gln-gly-ala-leu, because GGA and UGA both code for gly. D)It cannot be known what will happen, because there is not enough information to know.
The protein sequence will stop at gln, because UGA is a stop codon.
Let's break down the sequences step by step using the amino acid codon chart:
Original sequence mRNA: CAG GGA GCA UUA
1. CAG codes for glutamine (gln).
2. GGA codes for glycine (gly).
3. GCA codes for alanine (ala).
4. UUA codes for leucine (leu).
So, the original sequence is gln-gly-ala-leu.
Now, let's analyze the mutated sequence mRNA: CAG UGA GCA UUA
1. CAG codes for glutamine (gln).
2. UGA is a stop codon, which signals the end of translation. Therefore, the mutated sequence will stop at gln.
The correct answer is: A) The sequence will stop at gln, because UGA is a stop codon.
Identify the mechanism discussed below. The transfer of genes from one population to another Drives the changes that occur in populations A permanent change in the DNA sequence of a gene The random change in the frequency of an allele in a population
Answer:
B,D,A,C
Explanation:
The mechanism to the following statements are:
a. The transfer of genes from one population to another is gene flow.
b. Drives the changes that occur in populations are due to natural selection.
c. A permanent change in the DNA sequence of a gene is mutation.
d. The random change in the frequency of an allele in a population is genetic drift.
What is the variation?Variation is the difference in DNA between individuals or between populations.
Mutation and genetic recombination, natural selection, genetic drift are all the many origins of genetic diversity.
Thus, the correct mechanism is a. gene flow, b. natural selection, c. mutation, d. genetic drift.
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The relatively sudden appearance of many new species when niches and habitats are made available as a result of mass extinction
The relatively sudden appearance of many new species when niches and habitats are made available as a result of mass extinction is adaptive radiation.
What is Adaptive radiation?The evolution of a group of animals or plants into numerous forms that are adapted to different lifestyles is known as adaptive radiation. The strongest examples of adaptive radiations are seen in populations that are closely related and have only recently evolved.
A striking example is the evolution of primitive mammalian species into those that can run, jump, climb, swim, and fly starting in the Paleogene Period (66 million years ago).
The evolution of a group of animals or plants into numerous forms that are adapted to different lifestyles is known as adaptive radiation.
Therefore, The relatively sudden appearance of many new species when niches and habitats are made available as a result of mass extinction is adaptive radiation.
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Alcohol consumption during pregnancy is only dangerous during the first trimester.
a. true
b. false
A 65-year-old client with a recent history of head trauma and a long-term history of hypertension presents to the emergency department due to changes in mental status. mri reveals that the client has experienced a subarachnoid hemorrhage. what is the most likely cause of this type of stroke? aneurysm
Name the part of the respiratory system that routes food and air
Animals that feed primarily on arthropods and other soft-bodied invertebrates are called
What best defines a population?
Which term best describes the difference in colors of the birds below?
Natural selection. Reproduce maturity Genetic variation.
Genetic drift
Ans.
The birds given below are showing a population with different color feathers. These variations are known as genetic variation that involves difference in DNA sequence or genotype between the organisms within a population. Difference in genotype leads to difference in their phenotypic characters (physical appearance).
Thus, the correct answer is option). 'genetic variation.'
Ray fears closed-in places. he will not enter elevators and only lives and works in places that can be reached easily or by stairs. ray suffers from
Final answer:
Ray's fear of closed-in places and avoidance of elevators indicate that he likely suffers from claustrophobia, an anxiety disorder characterized by fear of enclosed spaces.
Explanation:
Ray's fear of closed-in places and his avoidance of entering elevators are symptoms of a specific phobia called claustrophobia.
Claustrophobia is an anxiety disorder characterized by an irrational fear of enclosed spaces or situations that might make one feel trapped or unable to escape. It can lead to significant distress and avoidance behavior like the one exhibited by Ray.
People with claustrophobia often feel anxious, experience panic attacks, and may go to great lengths to avoid closed spaces or situations that trigger their fear.
Alcohol will make it easy for you to feel as if you're __________ when you're not. A. crashing B. falling C. standing still D. impaired
Why is it important for women to perform breast self - examinations?
What is the European Union’s most important water pollution act called
Answer: The European Union's most important water pollution act is called Water Framework Directive.
The demand for clean lakes and rivers, coastal beaches and groundwater by the environmental organizations and the citizens the commission made water conservation a chief priority under which the Water Framework Directive was made. The Water Framework Directive has some of key objectives like expansion of the scope of water protection for all types of water sources, water managements on the basins of rivers, ensuring proper quality standards, involvement of citizens and correct pricing etc.
Drinking five ounces of wine is better for the body than drinking twelve ounces of beer because there's less pure alcohol in a glass of wine. please select the best answer from the choices provided. t f
The given statement is False.
The concentration of alcohol in beer is 4-5% and the concentration of alcohol in wine is 12-14%. Which means there is less pure alcohol in the beer as compared to that of wine.
Drinking beer is more beneficial for the body as compared to that of wine. It has more health benefits compared to that of wine.
The given statement is false because there is more pure alcohol in wine than in beer.
Which of beer or wine has a higher alcohol percentage?Wine and beer are both alcoholic beverages, however the percentage of alcohol on wine is greater than that in beer.
Beer contains alcohol of about 4 to 5% while wine contains alcohol of about 12-15%.
Therefore, there is more pure alcohol in wine than in beer and the given statement is false.
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Food aversions can be related to food allergies or to _____ to food.
Answer: adverse reactions
Rudolf is dealing with impending layoffs at work. yesterday, at a pharmacy, he measured his blood pressure and it was high. he also notices that when he thinks about the future, his heart rate accelerates. rudolf is demonstrating ________ symptoms of stress.
Physiological symptoms of stress
Stress plays aggravating role in diseases and it affects every parts of the body. Many emotional and physical disorders have been associated with stress including stroke, anxiety, hypertension, depression and many more. Stress symptoms can affect one’s health and can lead to other illnesses. For the question given above, Rudolf is demonstrating physiological symptoms of stress.
the photograph show root vegetables what makes root vegetables a renewable resource?
A nutrients and calories
B taste and color
C supply and demand
D growth and reproduction
Which term describes the nondigestible form of complex carbohydrates that occurs naturally in plant foods such as leaves, stems, skins, seeds, and hulls?
Which part of the spermatozoa contains the most mitochondria?
a. tail
b. midpiece
c. head
d. acrosome?
Why have biologists changed many of linnaeus's original classification of organisms?
Answer:
They were originally classified based on visual characteristics that could be seen on the outside of the organism, however with the advancement of technology and science scientists realized that other characteristics (molecular, structural, etc.) should be considered.
Explanation:
If today nature has an order in the eyes of man, this is due to the work of the Swedish naturalist Carl Lineu, who in the 18th century, when comparing reproductive organs and structures of animals and plants, formulated the system of binomial classification of species. That is, if we can now call ourselves homo sapiens, such nomenclature of genus and species, respectively, is the result of Lineu's work. His contributions did not stop there, since in addition to the species' names, the naturalist grouped them into a hierarchical classification system. Thus, Kingdoms, Philos, Classes, Orders and their subcategories were born.
However, Lineu's classification system was originally established based on visual characteristics that could be seen on the outside of the organism, however with the advance of technology and science scientists realized that other characteristics (molecular, structural, etc.) should be considered.