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otez555 [7]
3 years ago
8

How do lungs and airways compare among birds and mammals?

Biology
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs. ... Bird lungs do not expand or contract like the lungs of mammals. In mammalian lungs, the exchange of oxygen and carbon dioxide occurs in microscopic sacs in the lungs, called 'alveoli.

Explanation:

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The water level at the beach changes during the day. What causes the different water levels?
dexar [7]

Answer:

C. The moon's gravitational pull and Earth's rotation

Explanation:

The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides.

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3 0
3 years ago
How are active faults and inactive faults similar
ICE Princess25 [194]
Active faults are structure along which we expect displacement to occur. By definition, since a shallow earthquake is a process that produces displacement across a fault, all shallow earthquakes occur on active faults. Inactive faults are structures that we can identify, but which do no have earthquakes.
4 0
3 years ago
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scientists can use genetic information to identify people because it is unique to each person. which characteristic is unique to
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Answer:

The DNA of any individual possesses genetic traits which vary from individual to individual. Traits can be physical traits or behavioral traits.

Explanation:

Example of a physical trait would be the appearance of an individual and behavioral trait refers to the nature of the individual. Both vary from individual to individual.

6 0
3 years ago
What has to happen for one object to
FromTheMoon [43]

Answer:

Gravity must be more than interia .

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8 0
3 years ago
In the Gram-stain procedure, Gram-negative, but not Gram-positive, cell wall structures are decolorized because
Elan Coil [88]

Answer: because the structure of their cell wall is unable to retain the crystal violet stain

Explanation:

Due to differences in the thickness of a peptidoglycan layer in the cell membrane between Gram-positive and Gram-negative bacteria, Gram-positive bacteria (with a thicker peptidoglycan layer) retain crystal violet stain during the decolorization process, while Gram-negative bacteria lose the crystal violet stain

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