The North Atlantic right whale was classified as an endangered species in 2015. A major cause of death for these whales is collisions with shipping vessels. Several measures have been enacted to prevent such collisions in regions with a high abundance of right whales. In 2002 and 2006, shipping vessel lanes were rerouted around some of these regions. In 2008, speed restrictions were placed on the shipping vessels that were permitted to travel through these regions.

The graph below shows the estimated abundance of North Atlantic right whales from 1990 to 2015. The years in which these measures were enacted are marked on the graph.


What conclusion is best supported by the data in the graph?

A. Modifying shipping lanes is the most effective method of encouraging population growth in right whales.

B. Limiting shipping vessel speeds is the most effective method of preventing population decline in right whales.

C. Changes to vessel speeds and lanes have been effective in preventing population
declines in the right whale population, and no further actions are needed.

D. While changes to vessel lanes and speeds may have been beneficial to right
whales, additional actions are needed to prevent population declines.

These calls have highest rate of division:

The path way to regulate the low oxygen level in blood is;

Isabel's nervous system detects low oxygen levels in her blood through sensory receptors in her arteries, which then triggers an impulse relayed to the brain via sensory neurons. Subsequently, the brain sends signals through motor neurons, leading to an increase in Isabel's breathing rate as a reaction to the low oxygen levels.

When Isabel is near the finish line of a marathon and feeling out of breath, her body's intricate nervous system steps into action to regulate her breathing. Specialized sensory receptors in her arteries detect low oxygen levels in her blood, signaling the need for increased oxygen intake. Sensory neurons transmit this information as electrical impulses to the central nervous system (CNS), specifically certain brain regions responsible for regulating respiration.

Upon receiving the sensory input, the CNS processes the information and sends signals through motor neurons to the muscles involved in breathing. These motor neurons stimulate the respiratory muscles, such as the diaphragm and intercostal muscles, prompting Isabel's breathing rate to increase. This enhanced respiration aims to replenish the oxygen supply to her body and ensure she can meet the demands of her physical activity, helping her finish the marathon strong.

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An Area along an active fault that has not had recent earthquake activity

An area along an active fault

Umami, often translated as savory, is one of the five primary tastes. It is represented in protein-rich foods due to the activation of G protein-coupled receptors by amino acid L-glutamate.

The Umami Taste is described as savory, brothy, and meaty.

It is one of the five primary tastes that humans can perceive, along with sweet, salty, sour, and bitter.

Umami is activated by the amino acid L-glutamate which is commonly found in protein-rich foods, thus providing a savoury taste often found in meaty dishes.

This savory taste enhances the flavor of certain foods and signifies the presence of essential amino acids.

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A. In prophase I, tetrads of homologous chromosomes form and crossing over occurs

hope this helps :)

Answer:

The correct answer is "In prophase I, tetrads of homologous chromosomes form and crossing over occurs".

Explanation:

Mitosis is a type of cell division at which one parent cells produces two daughter cells with identical genomic content and with the same number of chromosomes as the parent. On the other hand, meiosis is a type of cell division at which four daughter cells are produced with half the number of chromosomes respect to the parent cell. The major difference between prophase I of meiosis and prophase of mitosis, is that in prophase I of meiosis, tetrads of homologous chromosomes form and crossing over occurs. The tetrads of chromosomes are the ones that later will make the genomic content of the four daughter cells, while the crossing over is what allows the genetic variations of the sexual cells.

Based on the information given above, the changes that are most likely to occur in the ecosystem are given below:

An ecosystem may be defined as a place or area where members of different species live and interact with one another for the purpose of their requirements such as food.

When the eagle population reduces, it gives the population of snakes to grow or increase because of lack of predation.

When the population of snakes increases, it may negatively impact the frog, and hence their population declines.

Therefore, it is well described above.

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The patient will feel no symptoms from that infection.

Red bumps on skin and blisters are usually observed on skin in S.aureus infection.

Staphylococcus aureus is the sphere shaped bacteria. It stains positively with Gram's stain.

Staphylococcus aureus is a pathogenic bacteria residing primarily in the human nares. It is mostly asymptomatic.

Staphylococcus aureus is responsible for causing abscess in the skin and tissues in humans when it migrates to blood stream.

It can also lead to pneumonia and other severe infections in the body if not managed to treat on time.

MRSA (Methicillin resistant Staphylococcus aureus) infection is one such in which the person does not show any visible signs and symptoms for the infection.

Such asymptomatic people are able to pass the infection to the healthy individuals. They are regarded as the carriers of the infection.

Staphylococcus aureus infection can be diagnosed through special culture techniques. Suitable antibiotics are prescribed to treat S. aureus infection.

Thus, Staphylococcus aureus is a serious disease causing bacteria in humans.

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The answer is community.

Final answer:

A food chain is a part of a larger ecosystem's food web, which represents intricate feeding relationships. The food web's interconnectedness ensures ecosystem stability by allowing energy to flow through multiple pathways.

Explanation:

This food chain is one part of a food web within an ecosystem. A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another, beginning with a producer and typically ending with decomposers. However, in reality, many organisms feed on more than one species, making the flow of energy and nutrients more complex than a single food chain can represent. This complexity is captured in a food web, which illustrates the interconnected network of food chains and the multiple feeding relationships among organisms in an ecosystem., improving stability and resilience to changes.

A food web encompasses numerous food chains and demonstrates the vast array of feeding interactions that occur in an ecosystem. For example, in a grassland ecosystem, grass (producer) might be eaten by a number of different herbivores (primary consumers), which in turn are preyed upon by various carnivores (secondary consumers), and when these die, decomposers break them down.

C. Cancer

Is the correct answer.

This is true, asexual reproduction involes the exact copying of a parent to its offspring.  In sexual reproduction, two parent's DNA is intermixed, thus giving new DNA.  Since there is only one parent in asexual reproduction, there is no chance of variability.  The only time the DNA may be different is during a mutation, which is not caused during the reproduction.

The answer is true.

Hi,

There is one of each type of unconformity in this diagram. Name at least one of each of them by indicating the layers that they are between.

Nonconformity exists between most metamorphic and sedimentary rock.

Angular unconformity exist mostly with sedimentary rock.

Disconformity exists also between sedimentary rock

In geology, unconformities are contacts between two rock layers that indicate periods of stopping, erosion, and resuming of deposition. Nonconformity occurs between sedimentary and igneous or metamorphic rock, Angular unconformity between new strata and older, tilted or folded strata, and Disconformity between two parallel sedimentary layers with a time gap.

In geology, an unconformity is a contact between two rock layers that are not parallel to each other. They indicate a period of geological time when deposition stopped, erosion removed previously formed rocks, and then deposition resumed. There are three main types of unconformities - Nonconformity, Angular unconformity, and Disconformity.

A Nonconformity occurs when sedimentary rock sits on top of igneous or metamorphic rock. For instance in a diagram, this could be between layer C (sedimentary) and layer D (igneous).

Next, an Angular unconformity happens when new strata lies on top of older, tilted, or folded strata. For example, this could be between layers B (tilted) and C (horizontal).

Lastly, a Disconformity refers to a gap in time between two parallel layers of sedimentary rock, perhaps between layers A (older) and B (younger) if there is a gap in time.

Remember that these are all case-dependent and the types and structures would depend largely on the specific diagram provided.

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The answer is anaphase 1.

In biology, the law of segregation explains how the offspring of parents with similar characteristics sometimes have offspring with a different characteristic.

They are called spinal nerves

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Earth is not at the center of the moon's orbit. Objects in space do not orbit in circles. The orbit in ellipses, or, ovals. Geometrically, an ellipse is formed by two focus points. Much like the sun is at one focus point of the Earth's orbit, the Earth is at one focus point of the moon's orbit.

(I do not own the image.)

Earth and the Moon share a common center of gravity, known as the barycenter, located around 1700 km beneath Earth's surface. The Moon orbits this point and is approximately 30 Earth-diameters away from Earth. Earth's gravitational pull governs this orbit and causes lunar eclipses when specific alignments occur.

The exact position of the Earth in the orbit of the Moon is not at the center, instead Earth and Moon both orbit a common center of mass, known as the barycenter. This barycenter is positioned about 1700 km below Earth's surface due to Earth's larger mass in comparison to the Moon.

The Moon is approximately 30 Earth-diameters away from us, and because its orbit is tilted relative to Earth's orbital plane, and not perfectly circular, Earth's shadow only intersects the Moon during specific alignments, resulting in lunar eclipses. Earth's gravitational force is responsible for the Moon's orbit around this barycenter, which is evident from the centripetal accelerations observed.

In biology, cellular communication is a term used to determine distinct kinds of methods of communication among the living cellulites. Of these intercellular communication signifies the communication between the cells. In this kind of communication, membrane vesicle trafficking plays an essential role in both humans and animals.  

On the other hand, intracellular communication signifies towards the communication of the organelles in order to sustain cellular homeostasis.  

The answer is; D

Radioactive waste poses a serious challenge to the environment. Any leakage of the waste is risky because the radioactivity can flow up the food chain and it also takes time for it to decay and become less harmful. Therefore, its effect can be felt over many generations. Therefore, safe storage of radioactive waste is a challenge (and can be very expensive) and a deterrent for pursuing the potent energy source.

In a single-celled organism, mitosis is used primarily for reproduction. It is a process where the cell divides to create two identical cells, which serve as independent organisms.

In a single-celled organism, mitosis primarily serves the purpose of reproduction. Mitosis is a process in which a cell divides to produce two genetically identical cells. Unlike multicellular organisms where mitosis typically contributes to growth, development, and repair, single-celled organisms use this process to create new, independent organisms. In these organisms, since there are no multiple cells to grow or repair, mitosis solely serves as a means of reproduction.

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B. Many stars and solar systems make up galaxies and many galaxies make up the universe.

transparent, expanding at an accelerated rate, stars produce heavy elements

She should have used another, second fish as a control, to later on compare both results (of a fish with and of a fish without epinerphine).

Therefore, the answer is D.

Hope it helped,

BioTeacher101

I think the answer should be D so she knows what the heart rate was before and what it is later, meaning she should have used another fish as a comparison.

Hope this helps,

:)

Answer:

carbon dioxide,water

energy

Explanation:

those  are the answer

Answer:

Options (2), (3), and (4).

Explanation:

Plant cells are eukaryotic cells, in which membrane-bound organelles, such as nucleus and mitochondria are present. Each plant cell is covered by a cell wall that provides shape and protection to the plant cell. A plasma membrane is present under the cell wall which separates interior of the cell from external environment.

Plant cells also possess chloroplasts that help in photosynthesis and large central vacuoles that act as storage organelles and store food. On the other hand, centrioles are absent in plant cells.

Thus, the correct options are 'options (2), (3), and (4).'

Plant cell characteristics include having cell walls and plasma membranes, large central vacuoles, and chloroplasts. They do not have cleavage furrows and centrioles during cell division, which are more characteristic of animal cells.

Plant cells display key characteristics that set them apart from animal cells. Regarding the choices provided:

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A particular single-celled organism uses radiant energy to fix carbon as sugars. This organism generates ATP by breaking down sugars through a process that uses oxygen. This organism is aerobic autotroph.

Autotrophs produce their own food from the substances available in their surroundings using light through photosynthesis or chemo-synthesis.

Answer

This organism can be classified as aerobic autotrophs

Explanation

Autotrophs are organisms that make their own food .They gather energy from the sun or chemical substances and convert it into sugars that could be utilized by other animals. Energy is transferred from autotrophs to consumers while eating then to carnivores.

Its called the greenhouse effect