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mr Goodwill [35]
3 years ago
9

Which organisms utilize a one-way air flow through their lungs to maximize airflow efficiency and oxygen consumption?

Biology
1 answer:
Leya [2.2K]3 years ago
6 0
The answer is birds.

Birds <span>utilize a one-way airflow through their lungs to maximize airflow efficiency and oxygen consumption. Although they inhale and exhale through one trachea, air flows in one direction through birds lungs. This is enabled thanks to air sacks. When birds inhale, air travels through the trachea, which further divides into two bronchi. The part of the air enters the lungs, and the other part remains in posterior air sacks. After the first exhalation, the fresh air from the posterior air sacks enters the lung and displace the spent air which is moved to the trachea. In case there is fresh air in the trachea, spent air is moved to anterior air sacks and after following exhale, it flows out from the trachea.</span>
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Which of the following are NOT correct based on Darwin's theory of evolution?
Black_prince [1.1K]

Answer:

D variations in individuals are not heritable

Explanation:

Genetic variation in individuals is what drives evolution. In a population of individuals in an environment, with the adequate resources, overpopulation can occur. However, resources are usually a limiting factor for population growth: there is not sufficient food/shelter etc. for everyone to survive.

Some individuals are better suited to success in the environment. This is because of random variation in their DNA that has arisen that give them a selective advantage. This allows them to thrive, take advantage of the limited resources over other members of the population, and be more likely to survive to reproductive age. This is natural selection.

Because this variation is genetic (in the DNA), they can then pass it on to their offspring. Over time, this leads to evolution over time.

8 0
3 years ago
For one half of the year, the north end of Earth’s rotation leans toward __
Vikki [24]

Answer:

Sun

Explanation:

6 0
3 years ago
Please Helppp with this question
Delicious77 [7]

Answer:

Well the model above is showing all the planets in order from how close or far away they are from the sun and it also seems to show the scale of each planet compared to another.

Explanation:

As for the Evidence or why it is important to know this is because the scale and location of the planet to the sun directly effects everything about the planet, its Atmosphere, tempterue and rotaion. And the more we learn about all plants we can better underatand our own geological past behavior of its Atmostohere and futute clamatic trends.

5 0
3 years ago
Now I know that my sense organs enable me to ______________.
umka21 [38]

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Now I know that my sense organs enable me to <em><u>Feel</u></em>

5 0
2 years ago
what do you think causes different phenotypes in organisms how does the phenotype depend on its genes (genotype)​
Lina20 [59]

Answer:

They difference in phenotypes is dependent on the genes. The more dominant gene will overpower a recessive gene, or if there are two recessive genes together, that will be the phenotype. When things are cross breaded they introduce different genotypes that allow for different looking phenotypes.

Example: Dominant blue flower (Bb)  mixed with recessive yellow flower (bb)

        B            b

b       Bb          bb

b       Bb          bb

There is a 50/50 chance the offspring will be either blue or yellow

4 0
3 years ago
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