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Sloan [31]
3 years ago
11

What was Darwin's role on the beagle

Biology
1 answer:
vovangra [49]3 years ago
7 0
What he did was say that evolution happened that over time the birds seemed to be changing
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Unidirectional flow in the heart is ensured because the heart contains ___________.
jekas [21]
<span>Unidirectional flow in the heart is ensured because the heart contains valves that prevent backflow.

These valves keep the flow of the heart going in one direction (hence the name "unidirectional").</span>
3 0
3 years ago
The parents of a 13-year-old boy with a sore throat for a week, vomiting for two days, swollen lymph glands, and stiff achy join
telo118 [61]

ANSWER: MITRAL VALVE STENOSIS

EXPLANATION:

The child have the risk of having MITRAL VALVE STENOSIS. It is also referred to as mitral stenosis.

Mitral valve stenosis occurs as results of the mitral valve opening narrowing. Which effect to less blood flowing through it.

The mitral valve is located between two chambers (the atrium and the ventricle) on the left side of your heart.

However, Mitral valve stenosis can lead to different health issues, including blood clots, difficulty breathing, fatigue, and heart failure.

Mitral valve stenosis is specifically caused by rheumatic fever (a childhood disease). This rheumatic fever occurs has a result of the body's immune response to an infection associated with the streptococcal bacteria.

Acute rheumatic fever affects the joints and the heart greatly. It causes joints inflammation temporarily and in severe case causes chronic disability.

Nevertheless, this cardiac complication have treatment and it is based on whether the affected individuals shows symptoms. Medications like blood thinners or anticoagulants (to reduce the risk of blood clots), diuretics, antiarrhythmics (to cure abnormal heart rhythms), beta-blockers (to slow your heart) etc, are being administered based on the level of the complication.

5 0
3 years ago
Which of the following statements is correct?
telo118 [61]

The anwser should be B. Nonrenewable resources generally have a higher impact on the environmental than renewable resources.

4 0
3 years ago
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The gaps of unjoined membrane through which small molecules exit and enter capillaries are called __________.
Dafna1 [17]

Answer:

<h2>A </h2>

Explanation:

1. A channel between two adjacent cells in known as an intercellular cleft.

2. And through these channels many molecules  can easily pass between cells.

3. Importance of Intercellular clefts:

i) It is very important in transportation of fluids and small solutes.  

ii) It contains gap junctions, tight junctions, desmosomes, and adheren proteins and these junctions help in regulate cell communication by signal transduction, surface receptors, or a chemogradient.

8 0
3 years ago
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Can yall help me whith this
kolezko [41]

Can  please provide the options.

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3 years ago
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