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soldier1979 [14.2K]
4 years ago
15

What are the four most important elements in living things

Biology
1 answer:
lbvjy [14]4 years ago
3 0

Answer:oxygen, carbon, hydrogen, and nitrogen

Explanation: those are the four most important elements in all living thigns

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Nasim is driving on a snow-covered road, and her car begins to slide. The quick behavioral response and the increased heart rate
Luda [366]

Answer:

1. sympathetic

2. parasympathetic

Explanation:

The sympathetic division of the autonomic nervous system triggers the release of stress hormones from adrenal medulla under emergency conditions. There is a series of physiological responses such as increased heart and breathing rate, an increased flow of blood to skeletal muscles, dilation of pupils, etc. These events helped Nasim to fight the stress conditions.  

Once she was relieved, the parasympathetic system is activated that shut down the physiological responses generated by sympathetic division. It slows down the breathing and heart rate and triggers the digestion and absorption of nutrients to restore the energy level of cells.

3 0
4 years ago
The head of a giraffe is 2.0 m above its heart and the density of the blood is 1.05 103 kg/m3. what is the difference in pressur
erastovalidia [21]
The giraffe head is higher than its heart so the blood pressure in the head must be lower than in the heart. The pressure is directly related to the density, gravity, and the height. The calculation would be:

<span>P = ρ*g*h 
</span>P= 1.05* 10^3 kg/m3 * 9.8m/s2 * 2m= <span>20 580 pascals= 20.58 kpa</span>
8 0
3 years ago
I live in wet land, I respire through roots<br>​
Vladimir [108]

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Kay [80]

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They cause shorelines to move inland.

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4 0
4 years ago
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What is the phenotype frequency? (APEX)
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