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PolarNik [594]
2 years ago
12

A doctor listens to a patient’s heartbeat using us that the scope and attacks an issue with the sound of blood flowing through t

he aorta. Which letter choice indicates the location of the problematic blood flow? 15 points

Biology
2 answers:
Korolek [52]2 years ago
7 0

Answer:

D

Explanation:

A: Superior Vena Cava

B: Pulmonary Artery

C: Left Ventricle

D: Aorta

Question states there is an issue with the sound of blood flowing through the aorta, therefore the answer is D

Mama L [17]2 years ago
3 0

Answer:

d

i just did it and got it right

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The descending pathway from the red nucleus to the lower motor neurons is the __________ tract.
m_a_m_a [10]

Descending tracts are the pathways by which motor signals are pass through from the brain to lower motor neurones. Thus, all the neurones within the descending motor system are classed as upper motor neurones. The lower motor neurones then directly innervate muscles to produce movement. Their cell bodies are found in the cerebral cortex or the brain stem, with their axons remaining within the CNS.

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3 years ago
The chaparral biome is best characterized by _______. a. large, contiguous regions of shrubland b. small regions interspersed wi
Alinara [238K]
The correct answer should be B. Small regions interspersed with other biomes. This type of a biome is found on all continents and in many countries. It's specific because it's similar to a desert when it comes to yearly precipitation, but it is different insofar that it has a lot of plants and animals that are mostly nocturnal predators.
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3 years ago
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Does geographic distance between salamander populations increase their reproductive isolation? To answer this question, research
Nataly_w [17]

Question: Does geographic distance between salamander populations increase their reproductive isolation?  To answer this question, researchers studied populations of the dusky salamander (Desmognathus ochrophaeus) living on different mountain ranges in the southern Appalachian Mountains.  The researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. Four mating combinations were tested for each pair of populations (A and B)—two within the same population (female A with male A and female B with male B) and two between populations (female A with male B and female B with male A).  The proportion of successful matings for each mating combination was measured. For example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. Then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). The reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (AA + BB) minus the sum of the proportion of successful matings of each type between populations (AB + BA).

The table (Figure 1) provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Part A - Understanding experimental design

What hypothesis did the researchers test in this study?

Answer:

"Reproductive isolation increases with geographic distance between dusky salamander populations"

Explanation:

The mechanisms of reproductive isolation are a assemblage of evolutionary mechanisms, behaviors and physiological procedures dangerous for speciation. They avert followers of dissimilar types from manufacturing offspring, or confirm that any offspring are germ-free. While in allopatric speciation the reproductive isolation is resolute superficially by the spatial isolation of populations, during sympatric speciation specific groups of persons create distinct mating organizations with self-like persons while distribution the similar home with the rest of the unique inhabitants.

3 0
3 years ago
Walking along a mile-long path in the woods, you notice a stand of your favorite wildflower, the cardinal flower, three differen
snow_tiger [21]
<h2>Clumped distribution</h2>

Explanation:

Clumped distribution applies to this type of example

  • Clumped distribution is a type of species distribution in which individuals or plants are clustered in groups in a place
  • In the given example stand of cardinal flower is observed three different times along the path in the woods
  • This type of distribution may arise due the fact that plants may have dropped their seeds straight to the ground
  • Stand of flowers is observed at three different times and not distributed uniformly or randomly

6 0
3 years ago
The puppy walks at 2<br> m/s towards his<br> mother.<br> Speed , velocity , or acceleration ?
erastovalidia [21]

Answer:Velocity

Explanation:

Because it is going towards the mother and it says how much is going.

8 0
2 years ago
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