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Zina [86]
2 years ago
15

The only structures that allow gas diffusion across them are the _____.

Biology
1 answer:
Fed [463]2 years ago
8 0
The answer is alveoli, there the only structures.

Hope this helps! Have a BLESSED day! :-)
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How was the theory of plate tectonics developed?<br><br> Help faaaaaaaaaaaaaaast!
kvasek [131]

It was developed by Alfred Wegener around 1912-1915 time frame. He proposed his theory of the "continental drift". He proposed that the continents plowed through crust  of ocean basins. He said that the continents look like a puzzle piece to put together. It's very interesting.

Hope this helped :)

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6 0
3 years ago
Read 2 more answers
T or F Deafness is caused due to rupturing of pinna.
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Deafness is caused due to rupturing of the eardrum
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2 years ago
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State if the body had been dead for more than or less than 12 hours based on the number of degrees lost (19 degrees). *
KiRa [710]

After the first 12 hours, the body loses about 0.39°C (0.7°F) per hour. than 12 hours. you use the rate of 0.78°C per hour to estimate the time of death. Temperature of dead body is 32.2°C (90°F)

Explanation:

This phase is known as algor mortis, or the death chill. Each hour, the body temperature falls about 1.5 degrees Fahrenheit (0.83 degrees Celsius) until it reaches room temperature. At the same time, without circulation to keep it moving through the body, blood starts to pool and settle.

he decrease in body temperature follows a somewhat linear progression: 3  two degrees Celsius in the first hour; one degree each hour thereafter.

8 0
2 years ago
There are five different types of nucleotide bases found in living things.
poizon [28]

Answer:

B

Explanation:

Birds and flowers have different arrangements of the bases.

Nucleotides are termed as organic molecules which serve as monomer units. Their work is to form nucleic acid polymers, for example, ribonucleic acid and deoxyribonucleic acid. 

They serve as biomolecules in the life-forms on earth. Nucleotides work as building blocks of nucleic acid. They are composed of the phosphate group, five-carbon sugar, and nitrogenous base.

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3 years ago
Chemical or pysical is shiny and silvery
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