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scoray [572]
3 years ago
7

The lungs are perfused by two circulations: the pulmonary and the bronchial. The pulmonary circulation is for oxygenation of blo

od. The bronchial circulation supplies blood to the lung structures (tissue).True / False.
Biology
1 answer:
WINSTONCH [101]3 years ago
7 0

Answer:

True

Explanation:

Pulmonary circulation transports blood through the alveoli for gas exchange. In this circulation the blood that comes from the veins initially has low oxygenation, and then leaves the right ventricle of the heart through the pulmonary artery, enters the lungs and returns to the heart with arterial and oxygenated blood

The bronchial circulation is well oxygenated and provides oxygen to the lungs. The structures to which this oxygen contributes in lungs are those that do not participate in a gas exchange.

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Which characteristics do mars and earth share? check all that apply.
Delvig [45]

Atmosphere, and active volcanoes, such characteristics is shared by mars and earth.

<h3>How do both mars and earth share characterstics?</h3>
  • Both the planets have the same area of dry land. This is because two-thirds of the area of Earth's surface is covered with oceans but water is absent on Mars.
  • Both Mars and Earth exhibit temperature and atmosphere.
  • The geological processes on Mars and Earth are common for example formation of volcanoes, canyons and impact basins.
  • Mars exhibits rings but the earth does not.
  • Earth exhibit distinct seasons but Mars do not due to reducing and hot atmospheric condition.

Thus, these are the similarity between mars and earth.

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5 0
2 years ago
Which graph représents selection that may lead to reduced variatior
rewona [7]

The SECOND graph represents selection that may lead to reduced variation. It is an example of stabilizing selection.

<h3>What is Stabilizing selection?  </h3>

Stabilizing selection is a type of natural selection that leads to a  decrease in the genetic variation of the population.

In Stabilizing selection, natural selection tends to favor an average phenotype and then can remove (select) extreme variations.

Stabilizing selection generates a modified bell curve graph in which the central portion is narrower and it is taller than the normal distribution bell shape.

Learn more about Stabilizing selection here:

brainly.com/question/8563440

3 0
1 year ago
How might a comparison of the anatomy of two closely related animals such as lizards and snakes provide information about their
jenyasd209 [6]
There are two ways of working out the phylogeny (family tree) of living animals. One is by analyzing their genes; the other is to analyze the extent to which they are similar in form. In either case. the results can then be integrated with the fossil record. In principle, the two approaches should be complementary. Both should lead to a consistent account of how snake and lizard families descended from a single stem. More or less a greater number of shared traits would mean they recently diverged from a common ancestor.
4 0
3 years ago
The cells that produce the shaft of a hair are
Rom4ik [11]

Answer:

Epithelial

Explanation:

6 0
3 years ago
Read 2 more answers
In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such
Kitty [74]

In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as <u>frequency-dependent selection.</u>

<u></u>

Frequency-dependent selection is an evolutionary process in which the fitness of a phenotype or genotype is dependent on the frequency of that phenotype or genotype in a particular population.

  • Positive frequency-dependent selection raises the fitness of a phenotype or genotype as it becomes more prevalent.
  • In the case of negative frequency-dependent selection, the fitness of an increasingly prevalent phenotype or genotype diminishes.

In a broader sense, frequency-dependent selection involves biological interactions that make the fitness of an individual dependent on the frequencies of other genotypes or phenotypes within the population.

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8 0
2 years ago
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