The brain and the spinal cord are the organs of the central nervous system.
Answer:
I'm thinking maybe B, illustrates the principle of natural selection.
Explanation:
This example shows that, once a particular event happens in a species' ecosystem that negatively affects their lifestyle, natural selection occurs and kills off those with a disadvantageous adaptation (in this case the narrow-beaked finches, since they could no longer eat insects but did not have the beak size to crack seeds), allowing those with the advantageous adaptation (in this case, the thicker-beaked birds) to prosper.
Answer:
No.
Explanation:
No, a scientific problem can not you solve with only one right or wrong answer because the scientific problem can be solved through a number of experiments. If we find the answer for the scientific problem so it must be verified through a number of experiments and if we got the same answer so we can say that this is the answer of that scientific problem. So it is concluded that we have to solve scientific problem through experiments.
In this case the answer is a rock nesting on the ground
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.
