Tachycardia is a condition when the heart rate is greater than 100 beats per min at rest. The electrocardiogram is a diagnostic tool that measures and records the electrical activity of the heart. Bradycardia on the other hand is when the heart rate is slower than normal. The Tachycardia and bradycardia can arise from either the SA node or from other areas of the cardiac.
Explanation:
cells which can divide an unlimited number of times by mitosis
<span>Yes, if the photo receptor cells and simple eyes that preceded it were useful to the animals in which they arose.</span>
By the convergence of two tectonic plates
It is d: both b and c the capillary action and transpirational pull
