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xenn [34]
2 years ago
15

Why is it difficult for scientists to study

Biology
1 answer:
RSB [31]2 years ago
8 0
The answer is A. An organism living at the bottom of the ocean is used to a high pressure so they cannot study them as the lower pressure kills the organisms as they reach the surface.
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rewona [7]

Answer:

The answer is d

Explanation:

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2 years ago
Which component of the electrocardiogram represents the duration of ventricular contraction?
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QRS complex refers to the combination of the Q, R, and S waves, and indicates ventricular depolarization and contraction (ventricular systole).

Ventricular rate can be calculated by determining the time interval between QRS complexes. The duration of the QRS complex is normally 0.06 to 0.10 seconds. This relatively short duration indicates that ventricular depolarization normally occurs very rapidly.

P QRS and T waves in electrocardiogram signifies the P wave in an ECG complex indicates atrial depolarization. The QRS is responsible for ventricular depolarization and the T wave is ventricular repolarization.

To learn more about ventricular depolarization  , here

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5 0
2 years ago
If color blindness is an X-linked recessive trait, what genotype in a father and a mother would be predicted to produce a 1:1 ra
Likurg_2 [28]
The genotype would be X'Y for the father (he would be colorblind)
The genotype would be X'X for the mother (she would be a carrier)
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The ratio would be 1:1 normal to colorblind
Hope this was helpful(;
3 0
3 years ago
Any substance that can be decomposed by bacterial action is biodegradable. <br> a. True<br> b. False
galina1969 [7]
A true a substance that can be decomposed by bacterial
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Which examples describe how a migratory bird will meet the challenge of reproducing?
skelet666 [1.2K]
<span>The challenge of reproducing is one of important manners which distinguishes migratory birds from another birds. The question is that which examples descrbe such manners, and for that, we can choose A, C and D</span>
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