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Archy [21]
4 years ago
15

Which substance is a compound?

Biology
2 answers:
bekas [8.4K]4 years ago
8 0
Oxygen is a compound , phosphorus and nitrogen , and reservoirs

Trava [24]4 years ago
7 0

the answer is water A

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Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors that could see. Resea
yarga [219]

Answer:

Explanation:

Evolution for lack of light. If there is no reason for it you lose the ability but it strengthens other senses. It's compensation. The need to tell if the temperature has increased because of something nearby or ability to feel miniscule movement will increase to compensate for that lack of sense.

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3 years ago
The growth of bacteria is determined not only by the composition of their surroundings but also by sudden changes in the living
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3 years ago
if an action potential could not be received by the atrioventricular node, despite the propagation through sinoatrial node, what
Fofino [41]

You would predict this to occur as an opening of atrioventricular valves, atria contraction, and filling of ventricles with blood if an action potential could not be received by the atrioventricular node, despite the propagation through the sinoatrial node.

So, the correct options are B, C &E.

It enables a left atrium action potential, causing both atria to contract simultaneously before the ventricles do. The AV delay delays the contraction of the ventricles by slowing the rate at which the impulse reaches them. This is significant because it gives the atria enough time to finish contracting so that the greatest amount of blood may be discharged into the ventricles.

The right and left atria to have time to contract first (eject blood to the ventricles) before the ventricles contract, which is why the AV node delay is so crucial. The AV node is a modified myocardium.

Learn to know more about Action potential on

brainly.com/question/13606928

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The given question is incomplete. The complete question is:

If an action potential could not be received by the atrioventricular node, despite the propagation through the sinoatrial node, what do you predict would occur? select all that apply.

A. ventricles contract

B. atrioventricular valves open

C. atria contract

D. blood is pumped out of the ventricles

E. ventricles fill with blood

F. semilunar valves open

8 0
1 year ago
What is a source of phosphorus in the environment A) Clouds B) Snow C) Air D) Rocks
Alex777 [14]
Rocks? not quite sure about this one but good luck and hope this helps! :)
5 0
3 years ago
Read 2 more answers
Henry eats rice for lunch, which contains starch. Which enzyme catalyzes the reaction that takes place and which product is the
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<span>A. Amylase catalyzes the reaction; glucose is the product.
</span>Amylase<span> is an enzyme that </span>catalyses<span> the hydrolysis of starch into sugars.It is </span><span>present in the saliva of humans through which it begins the chemical process of digestion.</span><span>

</span>
8 0
3 years ago
Read 2 more answers
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