if you were a fish, how would you obtain oxygen?
Answer: you would take in oxygen gas dissolved in the water through your gills.
Explanation:
What is the leading cause of water pollution in the United States?
Answer:
Industrial cause is the leading cause of water pollution in the United States
Explanation:
Industrial waste is the leading cause in the United States for water pollution.Industries generate large water pollution with their actions. these mainly generate from sulphur.Sulphur is a non-metallic substance that is harmful to marine life and aquatic life.Other causes of water pollution could be household waste and sewage waste.
Consider the mammalian heart. why is the muscular wall of the left ventricle thicker than that of the right ventricle? the left ventricle has more nerve endings for contraction, and more muscle mass must be there to accommodate the extra neurons. this difference stems from the fact that frogs have a thicker left ventricular muscle mass. the ventricle wall must be thicker to inhibit diffusion between the right and left ventricle. the left ventricle must contract with more force in order to send blood to the body's extremities.
BRIANLIESTTT ASAP!!
How did Southerners react to the laws passed by Congress? Explain why they responded this way. What were the political and social consequences of Reconstruction in the South?
How would you expect a disease of cartilage formation affect bone development?
a.it would greatly disrupt bone development, since bones are originally formed of cartilage which becomes replaced.
b.cartilage is used for other tissues, not bone, so it will not affect bone development.
c.the epiphysis is formed of cartilage so that will be disrupted, but otherwise the bone will be normal.
d.cartilage defects will affect bone only via the effect on tendons and ligaments?
Todd was startled when the door slammed shut. what part of the brainstem is responsible? todd was startled when the door slammed shut. what part of the brainstem is responsible? thalamus medulla midbrain pons
The part of the brainstem responsible for Todd being startled when the door slammed shut is the midbrain.
When an individual is startled by a sudden and loud noise, such as a door slamming, the midbrain plays a crucial role in the startle reflex. The midbrain is part of the brainstem and is involved in auditory and visual reflexes. It contains the reticular activating system (RAS), which is responsible for regulating arousal and alertness. The RAS also plays a role in the startle reflex by activating the amygdala, which processes emotions, and the hypothalamus, which controls the fight-or-flight response.
The other options listed have different functions:
- The thalamus, often considered part of the limbic system, serves as a relay station for sensory and motor signals to the cerebral cortex, but it is not part of the brainstem.
- The medulla is responsible for autonomic control of vital functions such as heart rate, breathing, and blood pressure.
- The pons is involved in sleep regulation and the transmission of sensory information, but it is not the primary region responsible for the startle reflex.
Therefore, the midbrain is the part of the brainstem most directly involved in the startle reflex when Todd was startled by the door slamming shut.
Species are disappearing almost a thousand times faster than they are forming. What is the main cause?
Human Impact is the answer
What does the presence of similar genes in very dissimilar organisms imply? a the organisms do not share a common ancestor. b the genes became identical through mutation. c they must be in the same family. d the organisms share a common ancestor?
Myelination is the covering of axons with myelin. over middle childhood, many neurons are myelinated. this has what effect on neural processing
A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. how should the organism be represented in the food web?
a. the organism must have an arrow pointing from it to a tertiary consumer and another arrow pointed from it to a decomposer.
b. the organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator.
c. the organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer.
d. the organism must have an arrow pointing from it to primary consumer and another arrow pointing away from it to a decomposer.
Answer:
C. The organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer.
Explanation:
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A volcanic eruption adds carbon dioxide to the air. This is an example of interactions between the
1)
atmosphere and geosphere
2)
hydrosphere and geosphere
3)
hydrosphere and biosphere
4)
geosphere and biosphere
Producers release carbon dioxide into the atmosphere during the process of photosynthesis. select one:
a. True
b. False
an energy pyramid illustrates that energy is a form of _____is lost to the surrounding as it is passed from one organism to the next???
What point on the graph represents the outbreak of moose ticks and a drastic decline in the moose population? A) Point A B) Point B C) Point C D) Point D Submit
At the neuromuscular junction, the arrival of acetylcholine on the muscle most immediately causes _____. view available hint(s) at the neuromuscular junction, the arrival of acetylcholine on the muscle most immediately causes _____. a graded hyperpolarization the release of second messengers, such as camp a single action potential an inhibitory postsynaptic potential a graded depolarization
The arrival of acetylcholine at the neuromuscular junction most immediately causes a graded depolarization, leading to an action potential and muscle contraction.
At the neuromuscular junction (NMJ), the arrival of acetylcholine on the muscle most immediately causes a graded depolarization. This process begins when acetylcholine (ACh), a neurotransmitter, is released from a motor neuron and binds to ACh receptors on the muscle fiber's motor end-plate. This binding opens ion channels, allowing positively charged ions to flow into the muscle cell, hence reducing the voltage difference between the inside and outside of the cell. This alteration in the membrane potential is termed depolarization, which promptly leads to the generation of an action potential across the muscle fiber, initiating muscle contraction.
In an aquatic habitat, an example of organisms from the pioneer community would be - f water reeds g algae h water lilies j grass
Answer: Algae
Explanation: Just took the test
John went to a picnic. he took home some leftover chicken and rice, heated it on the stove, ate it, and got sick two hours later. john thought the heating made his food safe because it would have killed any bacteria present. he didn't know that __________ produces a heat-stable toxin. view available hint(s)
Staphylococcus aureus
Staphylococcus aureus is bacterial that causes staphylococcal food poisoning which is one of the most common food-borne diseases. This food poisoning is caused by the ingestion of foods contaminated with enterotoxins produced by staphylococcus aureus. The enterotoxins produced by this organism are able to survive in stomach acids, drying and extreme temperature which makes them heat stable.
Nomextm and kevlartm are polyamides that are unusually tough and flame resistant. what structural feature makes nomex and kevlar different from other polyamides?
What is molten rock deep within Earth called?
A 20-year-old male is hospitalized with a 4-day history of cough and a temperature of 41°c. chest sounds are dull to percussion. a sputum gram stain is non-diagnostic. a blood culture is positive for gram-positive cocci in pairs. the recommended treatment is with __________.
Which type of vaccines triggers the recipient's immune system to produce antitoxins?
What is the effect of counterregulatory hormones on insulin? multiple choice question they inhibit glucose production in the body. they maintain the blood glucose level in the body. they help insulin in decreasing the level of glucose in the body. they increase the movement of glucose into the cells of the body?
The most common visual problems are the results of errors of refraction. examples of refraction errors that affect central visual acuity include ______________.
The most common visual problems that result from errors of refraction and affect central visual acuity include:
Myopia (Nearsightedness)
Hyperopia (Farsightedness)
Presbyopia
Astigmatism
What are the errors of refraction
Myopia (Nearsightedness): This is when you can see near objects clearly, but distant objects are blurry. It's often caused by an elongated eye shape, which causes light to focus in front of the retina instead of directly on it.
Hyperopia (Farsightedness): This is the opposite of myopia. You can see distant objects clearly, but near objects are blurry. It's often caused by a shortened eye shape, which causes light to focus behind the retina.
Astigmatism: This is when the cornea (the front surface of the eye) or lens has an irregular shape, causing light to be focused unevenly on the retina. This can result in blurred vision at all distances.
Presbyopia: This is an age-related condition that affects the eye's ability to focus on near objects. It occurs as the lens of the eye becomes less flexible with age.
Learn more about refraction at
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The best explanation for these modified rice plants being flood resuistant is that
Definition: this is the process of organisms adapting to their environments over time.
How does extracellular glucose inhibit transcription of the lac operon?
The lac operon is a set of genes in bacteria (E.coli) involved in lactose metabolism. The genes are expressed when lactose is present and glucose is absent.
There are two regulators of the operon: the lac repressor and catabolite activator protein (CAP). The lac repressor is a lactose sensor which usually blocks transcription of the operon. When lactose is present the repressor stops acting as a repressor. Another regulator is metabolite activator protein (CAP) which is a glucose sensor. It activates transcription of the operon when glucose levels are low. When glucose levels are low, cAMP is produced. cAMP binds to CAP which then binds to DNA and promotes transcription. When the glucose levels are high, there is no cAMP and CAP cannot bind to DNA-low transcription (or no transcription, depending on lactose).
Morris is having trouble sleeping, has lost his appetite, is too tired to go to work, and cannot concentrate on simple television shows. it is most likely that morris would be diagnosed with which disorder?
Depressive disorder
Depressive disorder is an illness which is characterized by persistent and intense feelings of sadness for long periods of time. It influences an individual’s mood and behavior as well as various physical functions such as appetite and sleep.This disorder sometimes makes an individual to lose interest in activities they once enjoyed and have trouble performing everyday activities. For the question given above, it is most likely that Morris would be diagnosed with depressive disorder.
How can an arthropod grow if it is enclosed in an exoskeleton?
What is a consequence of air pollution caused by greenhouse gases emitted by cars?
hearing loss
global climate change
speech interference
weakening of bones
stress
Answer: global climate change
Explanation:
The concentrations of the greenhouse gases like water vapor, methane, nitrous oxide, ozone, and carbon dioxide are increasing into the atmosphere due to human activities like burning of the fossil fuels, deforestation and due to natural hazards like forest fires and volcanic eruptions.
These gases are capable of absorbing the heat energy from sunlight as a result of this the temperature of the global atmosphere is increasing. This can bring a drastic climatic change as this may lead to the exclusion of some of the seasons, drastic dryness and hotness in the atmosphere.
One of the reasons for the success of the smallpox eradication campaign was that
a. smallpox viruses were used in the vaccine.
b. smallpox was not a transmissible disease.
c. smallpox occurred only in humans.
d. smallpox occurred only in south america.
e. smallpox could be treated with antibiotics.