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dem82 [27]
4 years ago
7

is this true or false. A change that produces one or more new substances is called a physical change.

Biology
1 answer:
sertanlavr [38]4 years ago
7 0

A change that produces one or more new substances is called a physical change.

true or<u> false</u>

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You have just delivered a premature baby. Your assessment reveals that he is breathing adequately; however, his heart rate is 90
s2008m [1.1K]

Answer:

The answer is letter B, keep him warm and ventilate with BVM.

Explanation:

In order to know more about the answer, let's check out the meaning of "Premature Baby" first.

Premature Baby- a baby born through premature birth <em>(fewer than 37 weeks).</em>  Babies are normally born at the usual <em>40 weeks.</em> Health problems may occur with premature babies, thus it is very important to monitor them.  

In the situation above, the premature baby's heart rate is only 90 beats/min. <em>A resting heart rate for a newborn infant is 130-150 beats per minute. </em>This means that the baby above has a slow heart rate. In order to increase the hear rate, it is important to keep the baby warm and to ventilate with a "Bag Valve Mask" (BVM). <u><em>An increase in internal temperature increases the heart rate. Increasing ventilation will also help increase the heart rate. </em></u>

<u><em>Remember: </em></u>Inhalation increases the heart rate.

4 0
3 years ago
Which step of mitosis does the following sentence describe? The paired chromosomes (sister chromatids) move to opposite ends of
dem82 [27]
That is anaphase i think  


8 0
4 years ago
Read 2 more answers
Echinoderms _____. _____ Select one: a. have an exoskeleton of hard calcareous plates b. often use tube feet to move around in t
atroni [7]

Answer:

B. often use tube feet to move around in their environment

Explanation:

Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.

Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.

Hence, the correct option is B.

4 0
3 years ago
Jordan pushes a box to the right with 30 Newtons of force while Kayla pushes the box to the left with 50 Newtons of force. What
cluponka [151]

Answer:

20 newtons

Explanation:

You have to subtract the smaller force from the larger since the forces are being pushed in opposite directions.

5 0
3 years ago
You sell sunglasses that come in small and large boxes. the small box has one layer of sunglasses. the large box has five layers
MArishka [77]
<span>let the pair of glasses in each layer in small box= x and the pair glasses in each layer in large box= x-2 total pair of glasses in large box= 5(x-2) total pair of glasses in small box= 1x</span>
4 0
3 years ago
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