Each alveolus is cup-shaped with very thin walls.
It’s surrounded by networks of blood vessels called capillaries that also have thin walls.
The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood.
The carbon dioxide you breathe out is diffused from the capillaries to the alveoli, up the bronchial tree and out your mouth.
The alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.

3 0

2 years ago

Why would scientists analyze another specimen from the same species

Mashutka [201]

Among the most frequently used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known standard sequences are estimated using phylogenetic trees.

<h3>What is a phylogenetic tree?</h3>

Among the most commonly used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known reference sequences are estimated using phylogenetic trees.

A phylogenetic tree is a diagram that depicts the evolutionary relationships between organisms or groups of organisms.

Scientists consider phylogenetic trees to be evolutionary hypotheses because the proposed relationships cannot be confirmed in the past.

Thus, every individual of same species are related to each other, so scientists can analyze another specimen from the same species.

For more details regarding phylogenetic tree, visit:

brainly.com/question/13577065

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6 0

8 months ago