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Elena L [17]
3 years ago
5

Trend first observed in the evolution of the earliest tetrapods was

Biology
2 answers:
Paladinen [302]3 years ago
8 0
 i believe the answer is....Feet with digits

yKpoI14uk [10]3 years ago
7 0
They evolved from some sort of lungfish. The ability for a fish to take oxygen from the air
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Where a plant opens and closes its stomata, it is maintaining
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Why is a complex food web better than a simple food chain for the survival of the community?
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Calculate the cardiac output if heart rate (HR) is 90 beats per minute, stroke volume (SV) is 110 ml/beat, end diastolic volume
Yakvenalex [24]

ANSWER: None of the above options are correct.

Cardiac Output(CO) = Stroke Volume(SV) × Heart Rate(HR)

Therefore where HR= 90bpm and SV= 110ml/min,

CO = 90 × 110 = 9900ml/min or 9.9L/min.

EXPLANATION:

CARDIAC OUTPUT is the volume of blood being pumped by the heart into the systemic circulation per minute.

Cardiac output is the product of two variables, stroke volume and heart rate.

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HEART RATE is the count of the number of times the heart beats per minute.

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