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slava [35]
3 years ago
15

Your Answer

Biology
1 answer:
artcher [175]3 years ago
8 0
A
Engineers I think if it’s wrong sorry
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1. True or False: Water vapor is only visible on really cold days where the air temperature is below freezing.
Aleonysh [2.5K]

Answer:

The correct answer is - False.

Explanation:

Water vapor is water in its gaseous state. Water vapor is totally invisible, an individual can not see water vapor in any situation with naked eyes. Fog, clouds, mist are not the water vapor as they contain liquid water or droplets.

Water vapor is essential for the weather and climate, without water vapor there would be no rain, snow or clouds as require water vapor to form.

Thus, the correct answer is - false.

8 0
3 years ago
HELP! 25 POINTS!!! A baby's first breath initiates a series of changes that includes which of the following?
diamong [38]
The most profound change at birth is your baby’s first breath. At this point, your baby’s lungs, which were filled with fluid during pregnancy, must suddenly fill with oxygen from the air. The fluid in the lungs is removed through the blood and lymph system, and is replaced by air. Your baby’s lungs must be able to exchange oxygen for carbon dioxide. At the same time, vigorous blood circulation in the lungs will begin. The first few breaths after birth may be the most difficult breaths your baby will take for the rest of her life.

There are a couple of things that will stimulate your baby to take her first breath. Hormonal and other changes during labour slow down or stop the production of fluid in the lungs, and may initiate the reabsorption of fluid from the lungs. This process is unlikely to have occurred if labour was very short or did not occur at all, for example, if your baby was delivered by caesarean section. Furthermore, physical stimulation and handling during delivery will encourage your baby to breathe. There are probably many other factors that stimulate baby’s first breath, but they have not been identified yet.

Your baby will need to work very hard to take her first breath, and her first few breaths may be shallow and irregular. With each breath after birth, more air will accumulate in her lungs, which will make it easier for her to breathe. After a few breaths, your baby will be able to breathe more easily, and her breaths will start to become deeper and more regular.

As the fluid in your baby’s lungs is replaced by air, the increased amounts of oxygen will stimulate a blood vessel close to her heart called the ductus arteriosus to begin closing. The ductus arteriosus was important to your baby’s body before birth, to divert blood away from the lungs. After birth, your baby needs blood to circulate through the lungs, and therefore, the ductus arteriosus is no longer needed. The ductus arteriosus usually closes during the first or second day of life. At this point, your baby’s heart will pump and circulate blood in much the same way as an adult’s heart. The transition from fetal to adult circulation can take minutes or hours. Problems with your baby’s colour or breathing may be related to this delayed transition.

3 0
4 years ago
What is the effect of the presence of a
Travka [436]

Answer:

the answer is A

Explanation:

The effect of the presence of a recisinf jhsk is that in the immortality jifhs jiff peanut butter rocks no crunchy.

5 0
3 years ago
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Which class of<br> macromolecules does DNA<br> and RNA belong?
agasfer [191]

Answer:

Nucleic acids

Explanation:

Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

i hope this helps:)

8 0
3 years ago
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True or false, The Miller-Urey experiment is to terrestrial as the meteorite hypothesis is to marine.
Anastasy [175]
<span>The statement "The Miller-Urey experiment is to terrestrial as the meteorite hypothesis is to marine" is true. The Miller - Urey experiment used a rock sample to test the ages of the Earth's atmosphere by passing it in an tube with electric current. Also, the meteorite hypothesis believed that while the meteorite was falling into the Earth, it brought organic molecules that made life happen.</span>
3 0
4 years ago
Read 2 more answers
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